From d37273af0e428e95a34841c1ade16b172db6c2b5 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 13 Sep 2023 13:19:50 +0200 Subject: [PATCH 01/23] ACPI: resource: Consolidate IRQ trigger-type override DMI tables Before this patch there were 6 dmi_system_id tables. While looking at the override_table[] there are only 2 cases: 1. irq 1, level, active-low, not-shared, skip-override 2. irq 1, edge, activ-low, shared, force-override Merge the dmi_system_id tables for identical cases together, going from 6 dmi_system_id tables and 6 override_table[] entries to just 2, one for each case. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/resource.c | 52 +++++++++++++++++------------------------ 1 file changed, 21 insertions(+), 31 deletions(-) diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 8116b55b6c98..c6bb28db8f30 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -385,7 +385,12 @@ unsigned int acpi_dev_get_irq_type(int triggering, int polarity) } EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type); -static const struct dmi_system_id medion_laptop[] = { +/* + * DMI matches for boards where the DSDT specifies the kbd IRQ as + * level active-low and using the override changes this to rising edge, + * stopping the keyboard from working. + */ +static const struct dmi_system_id irq1_level_low_skip_override[] = { { .ident = "MEDION P15651", .matches = { @@ -407,10 +412,6 @@ static const struct dmi_system_id medion_laptop[] = { DMI_MATCH(DMI_BOARD_NAME, "M1xA"), }, }, - { } -}; - -static const struct dmi_system_id asus_laptop[] = { { .ident = "Asus Vivobook K3402ZA", .matches = { @@ -474,20 +475,28 @@ static const struct dmi_system_id asus_laptop[] = { DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"), }, }, + { + .ident = "LG Electronics 17U70P", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), + DMI_MATCH(DMI_BOARD_NAME, "17U70P"), + }, + }, { } }; -static const struct dmi_system_id tongfang_gm_rg[] = { +/* + * DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ + * as falling edge and this must be overridden to rising edge, + * to have a working keyboard. + */ +static const struct dmi_system_id irq1_edge_low_force_override[] = { { .ident = "TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD", .matches = { DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), }, }, - { } -}; - -static const struct dmi_system_id maingear_laptop[] = { { .ident = "MAINGEAR Vector Pro 2 15", .matches = { @@ -502,10 +511,6 @@ static const struct dmi_system_id maingear_laptop[] = { DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"), }, }, - { } -}; - -static const struct dmi_system_id pcspecialist_laptop[] = { { .ident = "PCSpecialist Elimina Pro 16 M", /* @@ -520,17 +525,6 @@ static const struct dmi_system_id pcspecialist_laptop[] = { { } }; -static const struct dmi_system_id lg_laptop[] = { - { - .ident = "LG Electronics 17U70P", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), - DMI_MATCH(DMI_BOARD_NAME, "17U70P"), - }, - }, - { } -}; - struct irq_override_cmp { const struct dmi_system_id *system; unsigned char irq; @@ -541,12 +535,8 @@ struct irq_override_cmp { }; static const struct irq_override_cmp override_table[] = { - { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, - { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, - { tongfang_gm_rg, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, - { maingear_laptop, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, - { pcspecialist_laptop, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, - { lg_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, + { irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, + { irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, }; static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity, From 424009ab203086288dcd183d3ab48d243eb31268 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 13 Sep 2023 13:19:51 +0200 Subject: [PATCH 02/23] ACPI: resource: Drop .ident values from dmi_system_id tables The dmi_system_id.ident values are not used, replace the .ident = "$ident" lines with /* $ident */ to drop the unused strings from the text section. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/resource.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index c6bb28db8f30..014a3911381b 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -392,91 +392,91 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type); */ static const struct dmi_system_id irq1_level_low_skip_override[] = { { - .ident = "MEDION P15651", + /* MEDION P15651 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), DMI_MATCH(DMI_BOARD_NAME, "M15T"), }, }, { - .ident = "MEDION S17405", + /* MEDION S17405 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), DMI_MATCH(DMI_BOARD_NAME, "M17T"), }, }, { - .ident = "MEDION S17413", + /* MEDION S17413 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), DMI_MATCH(DMI_BOARD_NAME, "M1xA"), }, }, { - .ident = "Asus Vivobook K3402ZA", + /* Asus Vivobook K3402ZA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"), }, }, { - .ident = "Asus Vivobook K3502ZA", + /* Asus Vivobook K3502ZA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"), }, }, { - .ident = "Asus Vivobook S5402ZA", + /* Asus Vivobook S5402ZA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"), }, }, { - .ident = "Asus Vivobook S5602ZA", + /* Asus Vivobook S5602ZA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"), }, }, { - .ident = "Asus ExpertBook B1402CBA", + /* Asus ExpertBook B1402CBA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "B1402CBA"), }, }, { - .ident = "Asus ExpertBook B1502CBA", + /* Asus ExpertBook B1502CBA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "B1502CBA"), }, }, { - .ident = "Asus ExpertBook B2402CBA", + /* Asus ExpertBook B2402CBA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"), }, }, { - .ident = "Asus ExpertBook B2402FBA", + /* Asus ExpertBook B2402FBA */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "B2402FBA"), }, }, { - .ident = "Asus ExpertBook B2502", + /* Asus ExpertBook B2502 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"), }, }, { - .ident = "LG Electronics 17U70P", + /* LG Electronics 17U70P */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), DMI_MATCH(DMI_BOARD_NAME, "17U70P"), @@ -492,28 +492,29 @@ static const struct dmi_system_id irq1_level_low_skip_override[] = { */ static const struct dmi_system_id irq1_edge_low_force_override[] = { { - .ident = "TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD", + /* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */ .matches = { DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), }, }, { - .ident = "MAINGEAR Vector Pro 2 15", + /* MAINGEAR Vector Pro 2 15 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"), } }, { - .ident = "MAINGEAR Vector Pro 2 17", + /* MAINGEAR Vector Pro 2 17 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"), }, }, { - .ident = "PCSpecialist Elimina Pro 16 M", /* + * PCSpecialist Elimina Pro 16 M + * * Some models have product-name "Elimina Pro 16 M", * others "GM6BGEQ". Match on board-name to match both. */ From 4be32333d941a53dcfb48e342c808c63a3b25576 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:35:40 +0200 Subject: [PATCH 03/23] ACPI: thermal: Simplify initialization of critical and hot trips Use the observation that the critical and hot trip points are never updated by the ACPI thermal driver, because the flags passed from acpi_thermal_notify() to acpi_thermal_trips_update() do not include ACPI_TRIPS_CRITICAL or ACPI_TRIPS_HOT, to move the initialization of those trip points directly into acpi_thermal_get_trip_points() and reduce the size of __acpi_thermal_trips_update(). Also make the critical and hot trip points initialization code more straightforward and drop the flags that are not needed any more. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 130 +++++++++++++++++++++-------------------- 1 file changed, 66 insertions(+), 64 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 312730f8272e..fe64347ff925 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -43,17 +43,13 @@ #define ACPI_THERMAL_MAX_ACTIVE 10 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 -#define ACPI_TRIPS_CRITICAL BIT(0) -#define ACPI_TRIPS_HOT BIT(1) -#define ACPI_TRIPS_PASSIVE BIT(2) -#define ACPI_TRIPS_ACTIVE BIT(3) -#define ACPI_TRIPS_DEVICES BIT(4) +#define ACPI_TRIPS_PASSIVE BIT(0) +#define ACPI_TRIPS_ACTIVE BIT(1) +#define ACPI_TRIPS_DEVICES BIT(2) #define ACPI_TRIPS_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) -#define ACPI_TRIPS_INIT (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT | \ - ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE | \ - ACPI_TRIPS_DEVICES) +#define ACPI_TRIPS_INIT (ACPI_TRIPS_THRESHOLDS | ACPI_TRIPS_DEVICES) /* * This exception is thrown out in two cases: @@ -196,62 +192,6 @@ static void __acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) bool valid = false; int i; - /* Critical Shutdown */ - if (flag & ACPI_TRIPS_CRITICAL) { - status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &tmp); - tz->trips.critical.temperature = tmp; - /* - * Treat freezing temperatures as invalid as well; some - * BIOSes return really low values and cause reboots at startup. - * Below zero (Celsius) values clearly aren't right for sure.. - * ... so lets discard those as invalid. - */ - if (ACPI_FAILURE(status)) { - tz->trips.critical.valid = false; - acpi_handle_debug(tz->device->handle, - "No critical threshold\n"); - } else if (tmp <= 2732) { - pr_info(FW_BUG "Invalid critical threshold (%llu)\n", tmp); - tz->trips.critical.valid = false; - } else { - tz->trips.critical.valid = true; - acpi_handle_debug(tz->device->handle, - "Found critical threshold [%lu]\n", - tz->trips.critical.temperature); - } - if (tz->trips.critical.valid) { - if (crt == -1) { - tz->trips.critical.valid = false; - } else if (crt > 0) { - unsigned long crt_k = celsius_to_deci_kelvin(crt); - - /* - * Allow override critical threshold - */ - if (crt_k > tz->trips.critical.temperature) - pr_info("Critical threshold %d C\n", crt); - - tz->trips.critical.temperature = crt_k; - } - } - } - - /* Critical Sleep (optional) */ - if (flag & ACPI_TRIPS_HOT) { - status = acpi_evaluate_integer(tz->device->handle, "_HOT", NULL, &tmp); - if (ACPI_FAILURE(status)) { - tz->trips.hot.valid = false; - acpi_handle_debug(tz->device->handle, - "No hot threshold\n"); - } else { - tz->trips.hot.temperature = tmp; - tz->trips.hot.valid = true; - acpi_handle_debug(tz->device->handle, - "Found hot threshold [%lu]\n", - tz->trips.hot.temperature); - } - } - /* Passive (optional) */ if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.trip.valid) || flag == ACPI_TRIPS_INIT) { @@ -451,11 +391,73 @@ static void acpi_thermal_trips_update(struct acpi_thermal *tz, u32 event) dev_name(&adev->dev), event, 0); } +static void acpi_thermal_get_critical_trip(struct acpi_thermal *tz) +{ + unsigned long long tmp; + acpi_status status; + + if (crt > 0) { + tmp = celsius_to_deci_kelvin(crt); + goto set; + } + if (crt == -1) { + acpi_handle_debug(tz->device->handle, "Critical threshold disabled\n"); + goto fail; + } + + status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &tmp); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(tz->device->handle, "No critical threshold\n"); + goto fail; + } + if (tmp <= 2732) { + /* + * Below zero (Celsius) values clearly aren't right for sure, + * so discard them as invalid. + */ + pr_info(FW_BUG "Invalid critical threshold (%llu)\n", tmp); + goto fail; + } + +set: + tz->trips.critical.valid = true; + tz->trips.critical.temperature = tmp; + acpi_handle_debug(tz->device->handle, "Critical threshold [%lu]\n", + tz->trips.critical.temperature); + return; + +fail: + tz->trips.critical.valid = false; + tz->trips.critical.temperature = THERMAL_TEMP_INVALID; +} + +static void acpi_thermal_get_hot_trip(struct acpi_thermal *tz) +{ + unsigned long long tmp; + acpi_status status; + + status = acpi_evaluate_integer(tz->device->handle, "_HOT", NULL, &tmp); + if (ACPI_FAILURE(status)) { + tz->trips.hot.valid = false; + tz->trips.hot.temperature = THERMAL_TEMP_INVALID; + acpi_handle_debug(tz->device->handle, "No hot threshold\n"); + return; + } + + tz->trips.hot.valid = true; + tz->trips.hot.temperature = tmp; + acpi_handle_debug(tz->device->handle, "Hot threshold [%lu]\n", + tz->trips.hot.temperature); +} + static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) { bool valid; int i; + acpi_thermal_get_critical_trip(tz); + acpi_thermal_get_hot_trip(tz); + /* Passive and active trip points (optional). */ __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); valid = tz->trips.critical.valid | From b09872a652d386207600fcd001077251c0eae15a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:36:21 +0200 Subject: [PATCH 04/23] ACPI: thermal: Fold acpi_thermal_get_info() into its caller There is only one caller of acpi_thermal_get_info() and the code from it can be folded into its caller just fine, so do that. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 52 +++++++++++++++--------------------------- 1 file changed, 19 insertions(+), 33 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index fe64347ff925..b2705e67a6bd 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -846,38 +846,6 @@ static void acpi_thermal_aml_dependency_fix(struct acpi_thermal *tz) acpi_evaluate_integer(handle, "_TMP", NULL, &value); } -static int acpi_thermal_get_info(struct acpi_thermal *tz) -{ - int result; - - if (!tz) - return -EINVAL; - - acpi_thermal_aml_dependency_fix(tz); - - /* Get trip points [_CRT, _PSV, etc.] (required) */ - result = acpi_thermal_get_trip_points(tz); - if (result) - return result; - - /* Get temperature [_TMP] (required) */ - result = acpi_thermal_get_temperature(tz); - if (result) - return result; - - /* Set the cooling mode [_SCP] to active cooling (default) */ - acpi_execute_simple_method(tz->device->handle, "_SCP", - ACPI_THERMAL_MODE_ACTIVE); - - /* Get default polling frequency [_TZP] (optional) */ - if (tzp) - tz->polling_frequency = tzp; - else - acpi_thermal_get_polling_frequency(tz); - - return 0; -} - /* * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI * handles temperature values with a single decimal place. As a consequence, @@ -940,10 +908,28 @@ static int acpi_thermal_add(struct acpi_device *device) strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS); device->driver_data = tz; - result = acpi_thermal_get_info(tz); + acpi_thermal_aml_dependency_fix(tz); + + /* Get trip points [_CRT, _PSV, etc.] (required). */ + result = acpi_thermal_get_trip_points(tz); if (result) goto free_memory; + /* Get temperature [_TMP] (required). */ + result = acpi_thermal_get_temperature(tz); + if (result) + goto free_memory; + + /* Set the cooling mode [_SCP] to active cooling. */ + acpi_execute_simple_method(tz->device->handle, "_SCP", + ACPI_THERMAL_MODE_ACTIVE); + + /* Determine the default polling frequency [_TZP]. */ + if (tzp) + tz->polling_frequency = tzp; + else + acpi_thermal_get_polling_frequency(tz); + acpi_thermal_guess_offset(tz); result = acpi_thermal_register_thermal_zone(tz); From f04256a8f7de2c13619b636cec1109e596804229 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:37:59 +0200 Subject: [PATCH 05/23] ACPI: thermal: Determine the number of trip points earlier Compute the number of trip points in acpi_thermal_add() so as to allow the driver's data structures to be simplified going forward. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 56 ++++++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 29 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index b2705e67a6bd..79452315fdf3 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -452,7 +452,7 @@ static void acpi_thermal_get_hot_trip(struct acpi_thermal *tz) static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) { - bool valid; + unsigned int count = 0; int i; acpi_thermal_get_critical_trip(tz); @@ -460,18 +460,24 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) /* Passive and active trip points (optional). */ __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); - valid = tz->trips.critical.valid | - tz->trips.hot.valid | - tz->trips.passive.trip.valid; + if (tz->trips.critical.valid) + count++; - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) - valid = valid || tz->trips.active[i].trip.valid; + if (tz->trips.hot.valid) + count++; + + if (tz->trips.passive.trip.valid) + count++; + + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { + if (tz->trips.active[i].trip.valid) + count++; + else + break; - if (!valid) { - pr_warn(FW_BUG "No valid trip found\n"); - return -ENODEV; } - return 0; + + return count; } /* sys I/F for generic thermal sysfs support */ @@ -681,29 +687,15 @@ static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz) sysfs_remove_link(&tzdev->kobj, "device"); } -static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) +static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, + unsigned int trip_count) { struct acpi_thermal_trip *acpi_trip; struct thermal_trip *trip; int passive_delay = 0; - int trip_count = 0; int result; int i; - if (tz->trips.critical.valid) - trip_count++; - - if (tz->trips.hot.valid) - trip_count++; - - if (tz->trips.passive.trip.valid) { - trip_count++; - passive_delay = tz->trips.passive.tsp * 100; - } - - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].trip.valid; i++) - trip_count++; - trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); if (!trip) return -ENOMEM; @@ -724,6 +716,8 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) acpi_trip = &tz->trips.passive.trip; if (acpi_trip->valid) { + passive_delay = tz->trips.passive.tsp * 100; + trip->type = THERMAL_TRIP_PASSIVE; trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); trip->priv = acpi_trip; @@ -893,6 +887,7 @@ static void acpi_thermal_check_fn(struct work_struct *work) static int acpi_thermal_add(struct acpi_device *device) { struct acpi_thermal *tz; + unsigned int trip_count; int result; if (!device) @@ -911,9 +906,12 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_thermal_aml_dependency_fix(tz); /* Get trip points [_CRT, _PSV, etc.] (required). */ - result = acpi_thermal_get_trip_points(tz); - if (result) + trip_count = acpi_thermal_get_trip_points(tz); + if (!trip_count) { + pr_warn(FW_BUG "No valid trip points!\n"); + result = -ENODEV; goto free_memory; + } /* Get temperature [_TMP] (required). */ result = acpi_thermal_get_temperature(tz); @@ -932,7 +930,7 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_thermal_guess_offset(tz); - result = acpi_thermal_register_thermal_zone(tz); + result = acpi_thermal_register_thermal_zone(tz, trip_count); if (result) goto free_memory; From 06a5f76ee104c17022425ade32b970c1d7793e01 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:39:15 +0200 Subject: [PATCH 06/23] ACPI: thermal: Create and populate trip points table earlier Create and populate the driver's trip points table in acpi_thermal_add() so as to allow the its data structures to be simplified going forward. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 105 ++++++++++++++++++++--------------------- 1 file changed, 52 insertions(+), 53 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 79452315fdf3..d10e8cec4dd8 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -688,53 +688,10 @@ static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz) } static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, - unsigned int trip_count) + unsigned int trip_count, + int passive_delay) { - struct acpi_thermal_trip *acpi_trip; - struct thermal_trip *trip; - int passive_delay = 0; int result; - int i; - - trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); - if (!trip) - return -ENOMEM; - - tz->trip_table = trip; - - if (tz->trips.critical.valid) { - trip->type = THERMAL_TRIP_CRITICAL; - trip->temperature = acpi_thermal_temp(tz, tz->trips.critical.temperature); - trip++; - } - - if (tz->trips.hot.valid) { - trip->type = THERMAL_TRIP_HOT; - trip->temperature = acpi_thermal_temp(tz, tz->trips.hot.temperature); - trip++; - } - - acpi_trip = &tz->trips.passive.trip; - if (acpi_trip->valid) { - passive_delay = tz->trips.passive.tsp * 100; - - trip->type = THERMAL_TRIP_PASSIVE; - trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); - trip->priv = acpi_trip; - trip++; - } - - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - acpi_trip = &tz->trips.active[i].trip; - - if (!acpi_trip->valid) - break; - - trip->type = THERMAL_TRIP_ACTIVE; - trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); - trip->priv = acpi_trip; - trip++; - } tz->thermal_zone = thermal_zone_device_register_with_trips("acpitz", tz->trip_table, @@ -744,10 +701,8 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, NULL, passive_delay, tz->polling_frequency * 100); - if (IS_ERR(tz->thermal_zone)) { - result = PTR_ERR(tz->thermal_zone); - goto free_trip_table; - } + if (IS_ERR(tz->thermal_zone)) + return PTR_ERR(tz->thermal_zone); result = acpi_thermal_zone_sysfs_add(tz); if (result) @@ -766,8 +721,6 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, acpi_thermal_zone_sysfs_remove(tz); unregister_tzd: thermal_zone_device_unregister(tz->thermal_zone); -free_trip_table: - kfree(tz->trip_table); return result; } @@ -886,9 +839,13 @@ static void acpi_thermal_check_fn(struct work_struct *work) static int acpi_thermal_add(struct acpi_device *device) { + struct acpi_thermal_trip *acpi_trip; + struct thermal_trip *trip; struct acpi_thermal *tz; unsigned int trip_count; + int passive_delay = 0; int result; + int i; if (!device) return -EINVAL; @@ -930,9 +887,49 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_thermal_guess_offset(tz); - result = acpi_thermal_register_thermal_zone(tz, trip_count); + trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); + if (!trip) + return -ENOMEM; + + tz->trip_table = trip; + + if (tz->trips.critical.valid) { + trip->type = THERMAL_TRIP_CRITICAL; + trip->temperature = acpi_thermal_temp(tz, tz->trips.critical.temperature); + trip++; + } + + if (tz->trips.hot.valid) { + trip->type = THERMAL_TRIP_HOT; + trip->temperature = acpi_thermal_temp(tz, tz->trips.hot.temperature); + trip++; + } + + acpi_trip = &tz->trips.passive.trip; + if (acpi_trip->valid) { + passive_delay = tz->trips.passive.tsp * 100; + + trip->type = THERMAL_TRIP_PASSIVE; + trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); + trip->priv = acpi_trip; + trip++; + } + + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { + acpi_trip = &tz->trips.active[i].trip; + + if (!acpi_trip->valid) + break; + + trip->type = THERMAL_TRIP_ACTIVE; + trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); + trip->priv = acpi_trip; + trip++; + } + + result = acpi_thermal_register_thermal_zone(tz, trip_count, passive_delay); if (result) - goto free_memory; + goto free_trips; refcount_set(&tz->thermal_check_count, 3); mutex_init(&tz->thermal_check_lock); @@ -951,6 +948,8 @@ static int acpi_thermal_add(struct acpi_device *device) flush_wq: flush_workqueue(acpi_thermal_pm_queue); acpi_thermal_unregister_thermal_zone(tz); +free_trips: + kfree(tz->trip_table); free_memory: kfree(tz); From 30f04c7535e464f1824edb02e736a50be018777b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:41:06 +0200 Subject: [PATCH 07/23] ACPI: thermal: Simplify critical and hot trips representation Notice that the only piece of information regarding the critical and hot trips that needs to be stored in the driver's local data structures is whether or not these trips are valid, so drop all of the redundant information from there and adjust the code accordingly. Among other things, this requires acpi_thermal_add() to be rearranged so as to obtain the critical trip temperature before populating the trip points table and for symmetry, the hot trip temperature is obtained earlier too. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 69 ++++++++++++++++++++---------------------- 1 file changed, 33 insertions(+), 36 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index d10e8cec4dd8..f60f3633f3ef 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -107,10 +107,10 @@ struct acpi_thermal_active { }; struct acpi_thermal_trips { - struct acpi_thermal_trip critical; - struct acpi_thermal_trip hot; struct acpi_thermal_passive passive; struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE]; + bool critical_valid; + bool hot_valid; }; struct acpi_thermal { @@ -391,7 +391,7 @@ static void acpi_thermal_trips_update(struct acpi_thermal *tz, u32 event) dev_name(&adev->dev), event, 0); } -static void acpi_thermal_get_critical_trip(struct acpi_thermal *tz) +static long acpi_thermal_get_critical_trip(struct acpi_thermal *tz) { unsigned long long tmp; acpi_status status; @@ -420,34 +420,30 @@ static void acpi_thermal_get_critical_trip(struct acpi_thermal *tz) } set: - tz->trips.critical.valid = true; - tz->trips.critical.temperature = tmp; - acpi_handle_debug(tz->device->handle, "Critical threshold [%lu]\n", - tz->trips.critical.temperature); - return; + tz->trips.critical_valid = true; + acpi_handle_debug(tz->device->handle, "Critical threshold [%llu]\n", tmp); + return tmp; fail: - tz->trips.critical.valid = false; - tz->trips.critical.temperature = THERMAL_TEMP_INVALID; + tz->trips.critical_valid = false; + return THERMAL_TEMP_INVALID; } -static void acpi_thermal_get_hot_trip(struct acpi_thermal *tz) +static long acpi_thermal_get_hot_trip(struct acpi_thermal *tz) { unsigned long long tmp; acpi_status status; status = acpi_evaluate_integer(tz->device->handle, "_HOT", NULL, &tmp); if (ACPI_FAILURE(status)) { - tz->trips.hot.valid = false; - tz->trips.hot.temperature = THERMAL_TEMP_INVALID; + tz->trips.hot_valid = false; acpi_handle_debug(tz->device->handle, "No hot threshold\n"); - return; + return THERMAL_TEMP_INVALID; } - tz->trips.hot.valid = true; - tz->trips.hot.temperature = tmp; - acpi_handle_debug(tz->device->handle, "Hot threshold [%lu]\n", - tz->trips.hot.temperature); + tz->trips.hot_valid = true; + acpi_handle_debug(tz->device->handle, "Hot threshold [%llu]\n", tmp); + return tmp; } static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) @@ -455,17 +451,9 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) unsigned int count = 0; int i; - acpi_thermal_get_critical_trip(tz); - acpi_thermal_get_hot_trip(tz); /* Passive and active trip points (optional). */ __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); - if (tz->trips.critical.valid) - count++; - - if (tz->trips.hot.valid) - count++; - if (tz->trips.passive.trip.valid) count++; @@ -578,10 +566,10 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, int trip = -1; int result = 0; - if (tz->trips.critical.valid) + if (tz->trips.critical_valid) trip++; - if (tz->trips.hot.valid) + if (tz->trips.hot_valid) trip++; if (tz->trips.passive.trip.valid) { @@ -803,10 +791,9 @@ static void acpi_thermal_aml_dependency_fix(struct acpi_thermal *tz) * The heuristic below should work for all ACPI thermal zones which have a * critical trip point with a value being a multiple of 0.5 degree Celsius. */ -static void acpi_thermal_guess_offset(struct acpi_thermal *tz) +static void acpi_thermal_guess_offset(struct acpi_thermal *tz, long crit_temp) { - if (tz->trips.critical.valid && - (tz->trips.critical.temperature % 5) == 1) + if (tz->trips.critical_valid && crit_temp % 5 == 1) tz->kelvin_offset = 273100; else tz->kelvin_offset = 273200; @@ -843,6 +830,7 @@ static int acpi_thermal_add(struct acpi_device *device) struct thermal_trip *trip; struct acpi_thermal *tz; unsigned int trip_count; + int crit_temp, hot_temp; int passive_delay = 0; int result; int i; @@ -864,6 +852,15 @@ static int acpi_thermal_add(struct acpi_device *device) /* Get trip points [_CRT, _PSV, etc.] (required). */ trip_count = acpi_thermal_get_trip_points(tz); + + crit_temp = acpi_thermal_get_critical_trip(tz); + if (tz->trips.critical_valid) + trip_count++; + + hot_temp = acpi_thermal_get_hot_trip(tz); + if (tz->trips.hot_valid) + trip_count++; + if (!trip_count) { pr_warn(FW_BUG "No valid trip points!\n"); result = -ENODEV; @@ -885,7 +882,7 @@ static int acpi_thermal_add(struct acpi_device *device) else acpi_thermal_get_polling_frequency(tz); - acpi_thermal_guess_offset(tz); + acpi_thermal_guess_offset(tz, crit_temp); trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); if (!trip) @@ -893,15 +890,15 @@ static int acpi_thermal_add(struct acpi_device *device) tz->trip_table = trip; - if (tz->trips.critical.valid) { + if (tz->trips.critical_valid) { trip->type = THERMAL_TRIP_CRITICAL; - trip->temperature = acpi_thermal_temp(tz, tz->trips.critical.temperature); + trip->temperature = acpi_thermal_temp(tz, crit_temp); trip++; } - if (tz->trips.hot.valid) { + if (tz->trips.hot_valid) { trip->type = THERMAL_TRIP_HOT; - trip->temperature = acpi_thermal_temp(tz, tz->trips.hot.temperature); + trip->temperature = acpi_thermal_temp(tz, hot_temp); trip++; } From 64c512edf97735ecd882b532a5c5351edde39676 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:43:52 +0200 Subject: [PATCH 08/23] ACPI: thermal: Untangle initialization and updates of the passive trip Separate the code needed to update the passive trip (in a response to a notification from the platform firmware) as well as to initialize it from the code that is only necessary for its initialization and cleanly divide it into functions that each carry out a specific action. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 198 ++++++++++++++++++++++++++--------------- 1 file changed, 125 insertions(+), 73 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index f60f3633f3ef..bd8d9bfd5df9 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -192,73 +192,6 @@ static void __acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) bool valid = false; int i; - /* Passive (optional) */ - if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.trip.valid) || - flag == ACPI_TRIPS_INIT) { - valid = tz->trips.passive.trip.valid; - if (psv == -1) { - status = AE_SUPPORT; - } else if (psv > 0) { - tmp = celsius_to_deci_kelvin(psv); - status = AE_OK; - } else { - status = acpi_evaluate_integer(tz->device->handle, - "_PSV", NULL, &tmp); - } - - if (ACPI_FAILURE(status)) { - tz->trips.passive.trip.valid = false; - } else { - tz->trips.passive.trip.temperature = tmp; - tz->trips.passive.trip.valid = true; - if (flag == ACPI_TRIPS_INIT) { - status = acpi_evaluate_integer(tz->device->handle, - "_TC1", NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips.passive.trip.valid = false; - else - tz->trips.passive.tc1 = tmp; - - status = acpi_evaluate_integer(tz->device->handle, - "_TC2", NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips.passive.trip.valid = false; - else - tz->trips.passive.tc2 = tmp; - - status = acpi_evaluate_integer(tz->device->handle, - "_TSP", NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips.passive.trip.valid = false; - else - tz->trips.passive.tsp = tmp; - } - } - } - if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.trip.valid) { - memset(&devices, 0, sizeof(struct acpi_handle_list)); - status = acpi_evaluate_reference(tz->device->handle, "_PSL", - NULL, &devices); - if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Invalid passive threshold\n"); - tz->trips.passive.trip.valid = false; - } else { - tz->trips.passive.trip.valid = true; - } - - if (memcmp(&tz->trips.passive.devices, &devices, - sizeof(struct acpi_handle_list))) { - memcpy(&tz->trips.passive.devices, &devices, - sizeof(struct acpi_handle_list)); - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); - } - } - if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { - if (valid != tz->trips.passive.trip.valid) - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state"); - } - /* Active (optional) */ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; @@ -339,6 +272,72 @@ static void __acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) } } +static void update_acpi_thermal_trip_temp(struct acpi_thermal_trip *acpi_trip, + int temp) +{ + acpi_trip->valid = temp != THERMAL_TEMP_INVALID; + acpi_trip->temperature = temp; +} + +static long get_passive_temp(struct acpi_thermal *tz) +{ + unsigned long long tmp; + acpi_status status; + + status = acpi_evaluate_integer(tz->device->handle, "_PSV", NULL, &tmp); + if (ACPI_FAILURE(status)) + return THERMAL_TEMP_INVALID; + + return tmp; +} + +static void acpi_thermal_update_passive_trip(struct acpi_thermal *tz) +{ + struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; + + if (!acpi_trip->valid || psv > 0) + return; + + update_acpi_thermal_trip_temp(acpi_trip, get_passive_temp(tz)); + if (!acpi_trip->valid) + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "state"); +} + +static bool update_passive_devices(struct acpi_thermal *tz, bool compare) +{ + struct acpi_handle_list devices; + acpi_status status; + + memset(&devices, 0, sizeof(devices)); + + status = acpi_evaluate_reference(tz->device->handle, "_PSL", NULL, &devices); + if (ACPI_FAILURE(status)) { + acpi_handle_info(tz->device->handle, + "Missing device list for passive threshold\n"); + return false; + } + + if (compare && memcmp(&tz->trips.passive.devices, &devices, sizeof(devices))) + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "device"); + + memcpy(&tz->trips.passive.devices, &devices, sizeof(devices)); + return true; +} + +static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) +{ + struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; + + if (!acpi_trip->valid) + return; + + if (update_passive_devices(tz, true)) + return; + + update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "state"); +} + static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data) { struct acpi_thermal_trip *acpi_trip = trip->priv; @@ -359,8 +358,15 @@ static void acpi_thermal_adjust_thermal_zone(struct thermal_zone_device *thermal unsigned long data) { struct acpi_thermal *tz = thermal_zone_device_priv(thermal); - int flag = data == ACPI_THERMAL_NOTIFY_THRESHOLDS ? - ACPI_TRIPS_THRESHOLDS : ACPI_TRIPS_DEVICES; + int flag; + + if (data == ACPI_THERMAL_NOTIFY_THRESHOLDS) { + acpi_thermal_update_passive_trip(tz); + flag = ACPI_TRIPS_THRESHOLDS; + } else { + acpi_thermal_update_passive_devices(tz); + flag = ACPI_TRIPS_DEVICES; + } __acpi_thermal_trips_update(tz, flag); @@ -446,17 +452,63 @@ static long acpi_thermal_get_hot_trip(struct acpi_thermal *tz) return tmp; } +static bool acpi_thermal_init_passive_trip(struct acpi_thermal *tz) +{ + unsigned long long tmp; + acpi_status status; + int temp; + + if (psv == -1) + goto fail; + + if (psv > 0) { + temp = celsius_to_deci_kelvin(psv); + } else { + temp = get_passive_temp(tz); + if (temp == THERMAL_TEMP_INVALID) + goto fail; + } + + status = acpi_evaluate_integer(tz->device->handle, "_TC1", NULL, &tmp); + if (ACPI_FAILURE(status)) + goto fail; + + tz->trips.passive.tc1 = tmp; + + status = acpi_evaluate_integer(tz->device->handle, "_TC2", NULL, &tmp); + if (ACPI_FAILURE(status)) + goto fail; + + tz->trips.passive.tc2 = tmp; + + status = acpi_evaluate_integer(tz->device->handle, "_TSP", NULL, &tmp); + if (ACPI_FAILURE(status)) + goto fail; + + tz->trips.passive.tsp = tmp; + + if (!update_passive_devices(tz, false)) + goto fail; + + update_acpi_thermal_trip_temp(&tz->trips.passive.trip, temp); + return true; + +fail: + update_acpi_thermal_trip_temp(&tz->trips.passive.trip, THERMAL_TEMP_INVALID); + return false; +} + static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) { unsigned int count = 0; int i; - /* Passive and active trip points (optional). */ - __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); - - if (tz->trips.passive.trip.valid) + if (acpi_thermal_init_passive_trip(tz)) count++; + /* Active trip points (optional). */ + __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { if (tz->trips.active[i].trip.valid) count++; From cdfe09df04a0706f3926c0643ba2218fae04003b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 20 Sep 2023 14:35:46 +0200 Subject: [PATCH 09/23] ACPI: thermal: Untangle initialization and updates of active trips Separate the code needed to update active trips (in a response to a notification from the platform firmware) as well as to initialize them from the code that is only necessary for their initialization and cleanly divide it into functions that each carry out a specific action. Signed-off-by: Rafael J. Wysocki Acked-by: Daniel Lezcano --- drivers/acpi/thermal.c | 197 +++++++++++++++++++++-------------------- 1 file changed, 100 insertions(+), 97 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index bd8d9bfd5df9..a6599b19dba8 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -184,94 +184,6 @@ static int acpi_thermal_temp(struct acpi_thermal *tz, int temp_deci_k) tz->kelvin_offset); } -static void __acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) -{ - acpi_status status; - unsigned long long tmp; - struct acpi_handle_list devices; - bool valid = false; - int i; - - /* Active (optional) */ - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; - valid = tz->trips.active[i].trip.valid; - - if (act == -1) - break; /* disable all active trip points */ - - if (flag == ACPI_TRIPS_INIT || ((flag & ACPI_TRIPS_ACTIVE) && - tz->trips.active[i].trip.valid)) { - status = acpi_evaluate_integer(tz->device->handle, - name, NULL, &tmp); - if (ACPI_FAILURE(status)) { - tz->trips.active[i].trip.valid = false; - if (i == 0) - break; - - if (act <= 0) - break; - - if (i == 1) - tz->trips.active[0].trip.temperature = - celsius_to_deci_kelvin(act); - else - /* - * Don't allow override higher than - * the next higher trip point - */ - tz->trips.active[i-1].trip.temperature = - min_t(unsigned long, - tz->trips.active[i-2].trip.temperature, - celsius_to_deci_kelvin(act)); - - break; - } else { - tz->trips.active[i].trip.temperature = tmp; - tz->trips.active[i].trip.valid = true; - } - } - - name[2] = 'L'; - if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].trip.valid) { - memset(&devices, 0, sizeof(struct acpi_handle_list)); - status = acpi_evaluate_reference(tz->device->handle, - name, NULL, &devices); - if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Invalid active%d threshold\n", i); - tz->trips.active[i].trip.valid = false; - } else { - tz->trips.active[i].trip.valid = true; - } - - if (memcmp(&tz->trips.active[i].devices, &devices, - sizeof(struct acpi_handle_list))) { - memcpy(&tz->trips.active[i].devices, &devices, - sizeof(struct acpi_handle_list)); - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); - } - } - if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES)) - if (valid != tz->trips.active[i].trip.valid) - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state"); - - if (!tz->trips.active[i].trip.valid) - break; - } - - if (flag & ACPI_TRIPS_DEVICES) { - memset(&devices, 0, sizeof(devices)); - status = acpi_evaluate_reference(tz->device->handle, "_TZD", - NULL, &devices); - if (ACPI_SUCCESS(status) && - memcmp(&tz->devices, &devices, sizeof(devices))) { - tz->devices = devices; - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); - } - } -} - static void update_acpi_thermal_trip_temp(struct acpi_thermal_trip *acpi_trip, int temp) { @@ -338,6 +250,78 @@ static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "state"); } +static long get_active_temp(struct acpi_thermal *tz, int index) +{ + char method[] = { '_', 'A', 'C', '0' + index, '\0' }; + unsigned long long tmp; + acpi_status status; + + status = acpi_evaluate_integer(tz->device->handle, method, NULL, &tmp); + if (ACPI_FAILURE(status)) + return THERMAL_TEMP_INVALID; + + /* + * If an override has been provided, apply it so there are no active + * trips with thresholds greater than the override. + */ + if (act > 0) { + unsigned long long override = celsius_to_deci_kelvin(act); + + if (tmp > override) + tmp = override; + } + return tmp; +} + +static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) +{ + struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; + + if (!acpi_trip->valid) + return; + + update_acpi_thermal_trip_temp(acpi_trip, get_active_temp(tz, index)); + if (!acpi_trip->valid) + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "state"); +} + +static bool update_active_devices(struct acpi_thermal *tz, int index, bool compare) +{ + char method[] = { '_', 'A', 'L', '0' + index, '\0' }; + struct acpi_handle_list devices; + acpi_status status; + + memset(&devices, 0, sizeof(devices)); + + status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); + if (ACPI_FAILURE(status)) { + acpi_handle_info(tz->device->handle, + "Missing device list for active threshold %d\n", + index); + return false; + } + + if (compare && memcmp(&tz->trips.active[index].devices, &devices, sizeof(devices))) + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "device"); + + memcpy(&tz->trips.active[index].devices, &devices, sizeof(devices)); + return true; +} + +static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int index) +{ + struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; + + if (!acpi_trip->valid) + return; + + if (update_active_devices(tz, index, true)) + return; + + update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); + ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "state"); +} + static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data) { struct acpi_thermal_trip *acpi_trip = trip->priv; @@ -358,18 +342,18 @@ static void acpi_thermal_adjust_thermal_zone(struct thermal_zone_device *thermal unsigned long data) { struct acpi_thermal *tz = thermal_zone_device_priv(thermal); - int flag; + int i; if (data == ACPI_THERMAL_NOTIFY_THRESHOLDS) { acpi_thermal_update_passive_trip(tz); - flag = ACPI_TRIPS_THRESHOLDS; + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) + acpi_thermal_update_active_trip(tz, i); } else { acpi_thermal_update_passive_devices(tz); - flag = ACPI_TRIPS_DEVICES; + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) + acpi_thermal_update_active_devices(tz, i); } - __acpi_thermal_trips_update(tz, flag); - for_each_thermal_trip(tz->thermal_zone, acpi_thermal_adjust_trip, tz); } @@ -498,6 +482,28 @@ static bool acpi_thermal_init_passive_trip(struct acpi_thermal *tz) return false; } +static bool acpi_thermal_init_active_trip(struct acpi_thermal *tz, int index) +{ + long temp; + + if (act == -1) + goto fail; + + temp = get_active_temp(tz, index); + if (temp == THERMAL_TEMP_INVALID) + goto fail; + + if (!update_active_devices(tz, index, false)) + goto fail; + + update_acpi_thermal_trip_temp(&tz->trips.active[index].trip, temp); + return true; + +fail: + update_acpi_thermal_trip_temp(&tz->trips.active[index].trip, THERMAL_TEMP_INVALID); + return false; +} + static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) { unsigned int count = 0; @@ -506,11 +512,8 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) if (acpi_thermal_init_passive_trip(tz)) count++; - /* Active trip points (optional). */ - __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); - for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (tz->trips.active[i].trip.valid) + if (acpi_thermal_init_active_trip(tz, i)) count++; else break; From 4175a24f01eb4bfde7d57a9a3ea254649f440034 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 Sep 2023 20:46:02 +0200 Subject: [PATCH 10/23] ACPI: thermal: Drop redundant trip point flags Trip point flags previously used by the driver need not be used any more after the preceding changes, so drop them and adjust the code accordingly. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 29 ++++++++++------------------- 1 file changed, 10 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index a6599b19dba8..c5ff542bcbf3 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -43,14 +43,6 @@ #define ACPI_THERMAL_MAX_ACTIVE 10 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 -#define ACPI_TRIPS_PASSIVE BIT(0) -#define ACPI_TRIPS_ACTIVE BIT(1) -#define ACPI_TRIPS_DEVICES BIT(2) - -#define ACPI_TRIPS_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) - -#define ACPI_TRIPS_INIT (ACPI_TRIPS_THRESHOLDS | ACPI_TRIPS_DEVICES) - /* * This exception is thrown out in two cases: * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid @@ -58,12 +50,11 @@ * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change. * We need to re-bind the cooling devices of a thermal zone when this occurs. */ -#define ACPI_THERMAL_TRIPS_EXCEPTION(flags, tz, str) \ +#define ACPI_THERMAL_TRIPS_EXCEPTION(tz, str) \ do { \ - if (flags != ACPI_TRIPS_INIT) \ - acpi_handle_info(tz->device->handle, \ - "ACPI thermal trip point %s changed\n" \ - "Please report to linux-acpi@vger.kernel.org\n", str); \ + acpi_handle_info(tz->device->handle, \ + "ACPI thermal trip point %s changed\n" \ + "Please report to linux-acpi@vger.kernel.org\n", str); \ } while (0) static int act; @@ -212,7 +203,7 @@ static void acpi_thermal_update_passive_trip(struct acpi_thermal *tz) update_acpi_thermal_trip_temp(acpi_trip, get_passive_temp(tz)); if (!acpi_trip->valid) - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "state"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } static bool update_passive_devices(struct acpi_thermal *tz, bool compare) @@ -230,7 +221,7 @@ static bool update_passive_devices(struct acpi_thermal *tz, bool compare) } if (compare && memcmp(&tz->trips.passive.devices, &devices, sizeof(devices))) - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "device"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); memcpy(&tz->trips.passive.devices, &devices, sizeof(devices)); return true; @@ -247,7 +238,7 @@ static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) return; update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_PASSIVE, tz, "state"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } static long get_active_temp(struct acpi_thermal *tz, int index) @@ -282,7 +273,7 @@ static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) update_acpi_thermal_trip_temp(acpi_trip, get_active_temp(tz, index)); if (!acpi_trip->valid) - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "state"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } static bool update_active_devices(struct acpi_thermal *tz, int index, bool compare) @@ -302,7 +293,7 @@ static bool update_active_devices(struct acpi_thermal *tz, int index, bool compa } if (compare && memcmp(&tz->trips.active[index].devices, &devices, sizeof(devices))) - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "device"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); memcpy(&tz->trips.active[index].devices, &devices, sizeof(devices)); return true; @@ -319,7 +310,7 @@ static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int inde return; update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); - ACPI_THERMAL_TRIPS_EXCEPTION(ACPI_TRIPS_ACTIVE, tz, "state"); + ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data) From 058f5e407deb8d21b0a04e50e8efbd25b1fcbd1b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 20 Sep 2023 15:03:46 +0200 Subject: [PATCH 11/23] ACPI: thermal: Drop valid flag from struct acpi_thermal_trip Notice that the valid flag in struct acpi_thermal_trip is in fact redundant, because the temperature field of invalid trips is always equal to THERMAL_TEMP_INVALID, so drop it from there and adjust the code accordingly. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 49 ++++++++++++++++++++---------------------- 1 file changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index c5ff542bcbf3..10720a038846 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -81,7 +81,6 @@ static struct workqueue_struct *acpi_thermal_pm_queue; struct acpi_thermal_trip { unsigned long temperature; - bool valid; }; struct acpi_thermal_passive { @@ -175,11 +174,9 @@ static int acpi_thermal_temp(struct acpi_thermal *tz, int temp_deci_k) tz->kelvin_offset); } -static void update_acpi_thermal_trip_temp(struct acpi_thermal_trip *acpi_trip, - int temp) +static bool acpi_thermal_trip_valid(struct acpi_thermal_trip *acpi_trip) { - acpi_trip->valid = temp != THERMAL_TEMP_INVALID; - acpi_trip->temperature = temp; + return acpi_trip->temperature != THERMAL_TEMP_INVALID; } static long get_passive_temp(struct acpi_thermal *tz) @@ -198,11 +195,11 @@ static void acpi_thermal_update_passive_trip(struct acpi_thermal *tz) { struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; - if (!acpi_trip->valid || psv > 0) + if (!acpi_thermal_trip_valid(acpi_trip) || psv > 0) return; - update_acpi_thermal_trip_temp(acpi_trip, get_passive_temp(tz)); - if (!acpi_trip->valid) + acpi_trip->temperature = get_passive_temp(tz); + if (!acpi_thermal_trip_valid(acpi_trip)) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } @@ -231,13 +228,13 @@ static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) { struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; - if (!acpi_trip->valid) + if (!acpi_thermal_trip_valid(acpi_trip)) return; if (update_passive_devices(tz, true)) return; - update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); + acpi_trip->temperature = THERMAL_TEMP_INVALID; ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } @@ -268,11 +265,11 @@ static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) { struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; - if (!acpi_trip->valid) + if (!acpi_thermal_trip_valid(acpi_trip)) return; - update_acpi_thermal_trip_temp(acpi_trip, get_active_temp(tz, index)); - if (!acpi_trip->valid) + acpi_trip->temperature = get_active_temp(tz, index); + if (!acpi_thermal_trip_valid(acpi_trip)) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } @@ -303,13 +300,13 @@ static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int inde { struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; - if (!acpi_trip->valid) + if (!acpi_thermal_trip_valid(acpi_trip)) return; if (update_active_devices(tz, index, true)) return; - update_acpi_thermal_trip_temp(acpi_trip, THERMAL_TEMP_INVALID); + acpi_trip->temperature = THERMAL_TEMP_INVALID; ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } @@ -321,7 +318,7 @@ static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data) if (!acpi_trip) return 0; - if (acpi_trip->valid) + if (acpi_thermal_trip_valid(acpi_trip)) trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature); else trip->temperature = THERMAL_TEMP_INVALID; @@ -465,11 +462,11 @@ static bool acpi_thermal_init_passive_trip(struct acpi_thermal *tz) if (!update_passive_devices(tz, false)) goto fail; - update_acpi_thermal_trip_temp(&tz->trips.passive.trip, temp); + tz->trips.passive.trip.temperature = temp; return true; fail: - update_acpi_thermal_trip_temp(&tz->trips.passive.trip, THERMAL_TEMP_INVALID); + tz->trips.passive.trip.temperature = THERMAL_TEMP_INVALID; return false; } @@ -487,11 +484,11 @@ static bool acpi_thermal_init_active_trip(struct acpi_thermal *tz, int index) if (!update_active_devices(tz, index, false)) goto fail; - update_acpi_thermal_trip_temp(&tz->trips.active[index].trip, temp); + tz->trips.active[index].trip.temperature = temp; return true; fail: - update_acpi_thermal_trip_temp(&tz->trips.active[index].trip, THERMAL_TEMP_INVALID); + tz->trips.active[index].trip.temperature = THERMAL_TEMP_INVALID; return false; } @@ -545,7 +542,7 @@ static int thermal_get_trend(struct thermal_zone_device *thermal, return -EINVAL; acpi_trip = trip->priv; - if (!acpi_trip || !acpi_trip->valid) + if (!acpi_trip || !acpi_thermal_trip_valid(acpi_trip)) return -EINVAL; switch (trip->type) { @@ -618,7 +615,7 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, if (tz->trips.hot_valid) trip++; - if (tz->trips.passive.trip.valid) { + if (acpi_thermal_trip_valid(&tz->trips.passive.trip)) { trip++; for (i = 0; i < tz->trips.passive.devices.count; i++) { handle = tz->trips.passive.devices.handles[i]; @@ -643,7 +640,7 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, } for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (!tz->trips.active[i].trip.valid) + if (!acpi_thermal_trip_valid(&tz->trips.active[i].trip)) break; trip++; @@ -949,7 +946,7 @@ static int acpi_thermal_add(struct acpi_device *device) } acpi_trip = &tz->trips.passive.trip; - if (acpi_trip->valid) { + if (acpi_thermal_trip_valid(acpi_trip)) { passive_delay = tz->trips.passive.tsp * 100; trip->type = THERMAL_TRIP_PASSIVE; @@ -961,7 +958,7 @@ static int acpi_thermal_add(struct acpi_device *device) for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { acpi_trip = &tz->trips.active[i].trip; - if (!acpi_trip->valid) + if (!acpi_thermal_trip_valid(acpi_trip)) break; trip->type = THERMAL_TRIP_ACTIVE; @@ -1038,7 +1035,7 @@ static int acpi_thermal_resume(struct device *dev) return -EINVAL; for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (!tz->trips.active[i].trip.valid) + if (!acpi_thermal_trip_valid(&tz->trips.active[i].trip)) break; for (j = 0; j < tz->trips.active[i].devices.count; j++) { From 0d9741abd1c583e7bedb178358a9abd0981f49ba Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 27 Sep 2023 15:37:26 +0300 Subject: [PATCH 12/23] ACPI: thermal: Fix a small leak in acpi_thermal_add() Free "tz" if the "trip" allocation fails. Fixes: 5fc2189f9335 ("ACPI: thermal: Create and populate trip points table earlier") Signed-off-by: Dan Carpenter Signed-off-by: Rafael J. Wysocki --- drivers/acpi/thermal.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 10720a038846..f8a95939c88d 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -928,8 +928,10 @@ static int acpi_thermal_add(struct acpi_device *device) acpi_thermal_guess_offset(tz, crit_temp); trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); - if (!trip) - return -ENOMEM; + if (!trip) { + result = -ENOMEM; + goto free_memory; + } tz->trip_table = trip; From 0fa1bf34980eba19a5f07f97297bbd60b796e6d1 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 21 Sep 2023 19:48:33 +0200 Subject: [PATCH 13/23] ACPI: thermal: Add device list to struct acpi_thermal_trip The device lists present in struct acpi_thermal_passive and struct acpi_thermal_active can be located in struct acpi_thermal_trip which then will allow the same code to be used for handling both the passive and active trip points, so make that change. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 36 +++++++++++++++++++++--------------- 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index f8a95939c88d..4248669eb228 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -81,11 +81,11 @@ static struct workqueue_struct *acpi_thermal_pm_queue; struct acpi_thermal_trip { unsigned long temperature; + struct acpi_handle_list devices; }; struct acpi_thermal_passive { struct acpi_thermal_trip trip; - struct acpi_handle_list devices; unsigned long tc1; unsigned long tc2; unsigned long tsp; @@ -93,7 +93,6 @@ struct acpi_thermal_passive { struct acpi_thermal_active { struct acpi_thermal_trip trip; - struct acpi_handle_list devices; }; struct acpi_thermal_trips { @@ -205,6 +204,7 @@ static void acpi_thermal_update_passive_trip(struct acpi_thermal *tz) static bool update_passive_devices(struct acpi_thermal *tz, bool compare) { + struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; struct acpi_handle_list devices; acpi_status status; @@ -217,10 +217,10 @@ static bool update_passive_devices(struct acpi_thermal *tz, bool compare) return false; } - if (compare && memcmp(&tz->trips.passive.devices, &devices, sizeof(devices))) + if (compare && memcmp(&acpi_trip->devices, &devices, sizeof(devices))) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); - memcpy(&tz->trips.passive.devices, &devices, sizeof(devices)); + memcpy(&acpi_trip->devices, &devices, sizeof(devices)); return true; } @@ -276,6 +276,7 @@ static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) static bool update_active_devices(struct acpi_thermal *tz, int index, bool compare) { char method[] = { '_', 'A', 'L', '0' + index, '\0' }; + struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; struct acpi_handle_list devices; acpi_status status; @@ -289,10 +290,10 @@ static bool update_active_devices(struct acpi_thermal *tz, int index, bool compa return false; } - if (compare && memcmp(&tz->trips.active[index].devices, &devices, sizeof(devices))) + if (compare && memcmp(&acpi_trip->devices, &devices, sizeof(devices))) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); - memcpy(&tz->trips.active[index].devices, &devices, sizeof(devices)); + memcpy(&acpi_trip->devices, &devices, sizeof(devices)); return true; } @@ -602,6 +603,7 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, { struct acpi_device *device = cdev->devdata; struct acpi_thermal *tz = thermal_zone_device_priv(thermal); + struct acpi_thermal_trip *acpi_trip; struct acpi_device *dev; acpi_handle handle; int i; @@ -615,10 +617,11 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, if (tz->trips.hot_valid) trip++; - if (acpi_thermal_trip_valid(&tz->trips.passive.trip)) { + acpi_trip = &tz->trips.passive.trip; + if (acpi_thermal_trip_valid(acpi_trip)) { trip++; - for (i = 0; i < tz->trips.passive.devices.count; i++) { - handle = tz->trips.passive.devices.handles[i]; + for (i = 0; i < acpi_trip->devices.count; i++) { + handle = acpi_trip->devices.handles[i]; dev = acpi_fetch_acpi_dev(handle); if (dev != device) continue; @@ -640,12 +643,13 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, } for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (!acpi_thermal_trip_valid(&tz->trips.active[i].trip)) + acpi_trip = &tz->trips.active[i].trip; + if (!acpi_thermal_trip_valid(acpi_trip)) break; trip++; - for (j = 0; j < tz->trips.active[i].devices.count; j++) { - handle = tz->trips.active[i].devices.handles[j]; + for (j = 0; j < acpi_trip->devices.count; j++) { + handle = acpi_trip->devices.handles[j]; dev = acpi_fetch_acpi_dev(handle); if (dev != device) continue; @@ -1037,11 +1041,13 @@ static int acpi_thermal_resume(struct device *dev) return -EINVAL; for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (!acpi_thermal_trip_valid(&tz->trips.active[i].trip)) + struct acpi_thermal_trip *acpi_trip = &tz->trips.active[i].trip; + + if (!acpi_thermal_trip_valid(acpi_trip)) break; - for (j = 0; j < tz->trips.active[i].devices.count; j++) { - acpi_bus_update_power(tz->trips.active[i].devices.handles[j], + for (j = 0; j < acpi_trip->devices.count; j++) { + acpi_bus_update_power(acpi_trip->devices.handles[j], &power_state); } } From 317508c65f1f966367553ef84f5d8eba16720f32 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 21 Sep 2023 19:49:24 +0200 Subject: [PATCH 14/23] ACPI: thermal: Collapse trip devices update functions In order to reduce code duplication, merge update_passive_devices() and update_active_devices() into one function called update_trip_devices() that will be used for updating both the passive and active trip points. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 53 ++++++++++++++++-------------------------- 1 file changed, 20 insertions(+), 33 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 4248669eb228..93d2ab552686 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -43,6 +43,8 @@ #define ACPI_THERMAL_MAX_ACTIVE 10 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 +#define ACPI_THERMAL_TRIP_PASSIVE (-1) + /* * This exception is thrown out in two cases: * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid @@ -202,18 +204,25 @@ static void acpi_thermal_update_passive_trip(struct acpi_thermal *tz) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } -static bool update_passive_devices(struct acpi_thermal *tz, bool compare) +static bool update_trip_devices(struct acpi_thermal *tz, + struct acpi_thermal_trip *acpi_trip, + int index, bool compare) { - struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; struct acpi_handle_list devices; + char method[] = "_PSL"; acpi_status status; + if (index != ACPI_THERMAL_TRIP_PASSIVE) { + method[1] = 'A'; + method[2] = 'L'; + method[3] = '0' + index; + } + memset(&devices, 0, sizeof(devices)); - status = acpi_evaluate_reference(tz->device->handle, "_PSL", NULL, &devices); + status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Missing device list for passive threshold\n"); + acpi_handle_info(tz->device->handle, "%s evaluation failure\n", method); return false; } @@ -231,8 +240,9 @@ static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) if (!acpi_thermal_trip_valid(acpi_trip)) return; - if (update_passive_devices(tz, true)) + if (update_trip_devices(tz, acpi_trip, ACPI_THERMAL_TRIP_PASSIVE, true)) { return; + } acpi_trip->temperature = THERMAL_TEMP_INVALID; ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); @@ -273,30 +283,6 @@ static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } -static bool update_active_devices(struct acpi_thermal *tz, int index, bool compare) -{ - char method[] = { '_', 'A', 'L', '0' + index, '\0' }; - struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; - struct acpi_handle_list devices; - acpi_status status; - - memset(&devices, 0, sizeof(devices)); - - status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); - if (ACPI_FAILURE(status)) { - acpi_handle_info(tz->device->handle, - "Missing device list for active threshold %d\n", - index); - return false; - } - - if (compare && memcmp(&acpi_trip->devices, &devices, sizeof(devices))) - ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); - - memcpy(&acpi_trip->devices, &devices, sizeof(devices)); - return true; -} - static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int index) { struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; @@ -304,7 +290,7 @@ static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int inde if (!acpi_thermal_trip_valid(acpi_trip)) return; - if (update_active_devices(tz, index, true)) + if (update_trip_devices(tz, acpi_trip, index, true)) return; acpi_trip->temperature = THERMAL_TEMP_INVALID; @@ -460,7 +446,8 @@ static bool acpi_thermal_init_passive_trip(struct acpi_thermal *tz) tz->trips.passive.tsp = tmp; - if (!update_passive_devices(tz, false)) + if (!update_trip_devices(tz, &tz->trips.passive.trip, + ACPI_THERMAL_TRIP_PASSIVE, false)) goto fail; tz->trips.passive.trip.temperature = temp; @@ -482,7 +469,7 @@ static bool acpi_thermal_init_active_trip(struct acpi_thermal *tz, int index) if (temp == THERMAL_TEMP_INVALID) goto fail; - if (!update_active_devices(tz, index, false)) + if (!update_trip_devices(tz, &tz->trips.active[index].trip, index, false)) goto fail; tz->trips.active[index].trip.temperature = temp; From 54fc61a106c9b7fb55a3c6a595349826c0548468 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 21 Sep 2023 19:50:08 +0200 Subject: [PATCH 15/23] ACPI: thermal: Collapse trip devices update function wrappers In order to reduce code duplicationeve further, merge acpi_thermal_update_passive/active_devices() into one function called acpi_thermal_update_trip_devices() that will be used for updating both the passive and active trip points. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 26 +++++++------------------- 1 file changed, 7 insertions(+), 19 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 93d2ab552686..ebe11288d7e0 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -233,14 +233,16 @@ static bool update_trip_devices(struct acpi_thermal *tz, return true; } -static void acpi_thermal_update_passive_devices(struct acpi_thermal *tz) +static void acpi_thermal_update_trip_devices(struct acpi_thermal *tz, int index) { - struct acpi_thermal_trip *acpi_trip = &tz->trips.passive.trip; + struct acpi_thermal_trip *acpi_trip; + acpi_trip = index == ACPI_THERMAL_TRIP_PASSIVE ? + &tz->trips.passive.trip : &tz->trips.active[index].trip; if (!acpi_thermal_trip_valid(acpi_trip)) return; - if (update_trip_devices(tz, acpi_trip, ACPI_THERMAL_TRIP_PASSIVE, true)) { + if (update_trip_devices(tz, acpi_trip, index, true)) { return; } @@ -283,20 +285,6 @@ static void acpi_thermal_update_active_trip(struct acpi_thermal *tz, int index) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); } -static void acpi_thermal_update_active_devices(struct acpi_thermal *tz, int index) -{ - struct acpi_thermal_trip *acpi_trip = &tz->trips.active[index].trip; - - if (!acpi_thermal_trip_valid(acpi_trip)) - return; - - if (update_trip_devices(tz, acpi_trip, index, true)) - return; - - acpi_trip->temperature = THERMAL_TEMP_INVALID; - ACPI_THERMAL_TRIPS_EXCEPTION(tz, "state"); -} - static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data) { struct acpi_thermal_trip *acpi_trip = trip->priv; @@ -324,9 +312,9 @@ static void acpi_thermal_adjust_thermal_zone(struct thermal_zone_device *thermal for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) acpi_thermal_update_active_trip(tz, i); } else { - acpi_thermal_update_passive_devices(tz); + acpi_thermal_update_trip_devices(tz, ACPI_THERMAL_TRIP_PASSIVE); for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) - acpi_thermal_update_active_devices(tz, i); + acpi_thermal_update_trip_devices(tz, i); } for_each_thermal_trip(tz->thermal_zone, acpi_thermal_adjust_trip, tz); From 3e7d6f396d74a3e40c390bb53947938957426097 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 21 Sep 2023 19:51:19 +0200 Subject: [PATCH 16/23] ACPI: thermal: Merge trip initialization functions In order to reduce code duplicationeve further, merge acpi_thermal_init_passive/active_trip() into one function called acpi_thermal_init_trip() that will be used for initializing both the passive and active trip points. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 64 ++++++++++++++++++++---------------------- 1 file changed, 30 insertions(+), 34 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index ebe11288d7e0..c303688ead71 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -399,72 +399,68 @@ static long acpi_thermal_get_hot_trip(struct acpi_thermal *tz) return tmp; } -static bool acpi_thermal_init_passive_trip(struct acpi_thermal *tz) +static bool passive_trip_params_init(struct acpi_thermal *tz) { unsigned long long tmp; acpi_status status; - int temp; - - if (psv == -1) - goto fail; - - if (psv > 0) { - temp = celsius_to_deci_kelvin(psv); - } else { - temp = get_passive_temp(tz); - if (temp == THERMAL_TEMP_INVALID) - goto fail; - } status = acpi_evaluate_integer(tz->device->handle, "_TC1", NULL, &tmp); if (ACPI_FAILURE(status)) - goto fail; + return false; tz->trips.passive.tc1 = tmp; status = acpi_evaluate_integer(tz->device->handle, "_TC2", NULL, &tmp); if (ACPI_FAILURE(status)) - goto fail; + return false; tz->trips.passive.tc2 = tmp; status = acpi_evaluate_integer(tz->device->handle, "_TSP", NULL, &tmp); if (ACPI_FAILURE(status)) - goto fail; + return false; tz->trips.passive.tsp = tmp; - if (!update_trip_devices(tz, &tz->trips.passive.trip, - ACPI_THERMAL_TRIP_PASSIVE, false)) - goto fail; - - tz->trips.passive.trip.temperature = temp; return true; - -fail: - tz->trips.passive.trip.temperature = THERMAL_TEMP_INVALID; - return false; } -static bool acpi_thermal_init_active_trip(struct acpi_thermal *tz, int index) +static bool acpi_thermal_init_trip(struct acpi_thermal *tz, int index) { + struct acpi_thermal_trip *acpi_trip; long temp; - if (act == -1) - goto fail; + if (index == ACPI_THERMAL_TRIP_PASSIVE) { + acpi_trip = &tz->trips.passive.trip; + + if (psv == -1) + goto fail; + + if (!passive_trip_params_init(tz)) + goto fail; + + temp = psv > 0 ? celsius_to_deci_kelvin(psv) : + get_passive_temp(tz); + } else { + acpi_trip = &tz->trips.active[index].trip; + + if (act == -1) + goto fail; + + temp = get_active_temp(tz, index); + } - temp = get_active_temp(tz, index); if (temp == THERMAL_TEMP_INVALID) goto fail; - if (!update_trip_devices(tz, &tz->trips.active[index].trip, index, false)) + if (!update_trip_devices(tz, acpi_trip, index, false)) goto fail; - tz->trips.active[index].trip.temperature = temp; + acpi_trip->temperature = temp; return true; fail: - tz->trips.active[index].trip.temperature = THERMAL_TEMP_INVALID; + acpi_trip->temperature = THERMAL_TEMP_INVALID; return false; } @@ -473,11 +469,11 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) unsigned int count = 0; int i; - if (acpi_thermal_init_passive_trip(tz)) + if (acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE)) count++; for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (acpi_thermal_init_active_trip(tz, i)) + if (acpi_thermal_init_trip(tz, i)) count++; else break; From 2e57d10a6591560724b80a628235559571f4cb8d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 27 Sep 2023 13:17:25 -0700 Subject: [PATCH 17/23] ACPI: utils: Dynamically determine acpi_handle_list size Address a long-standing "TBD" comment in the ACPI headers regarding the number of handles in struct acpi_handle_list. The number 10, which along with the comment dates back to 2.4.23, seems like it may have been arbitrarily chosen and isn't sufficient in all cases [1]. Finally change the code to dynamically determine the size of the handles table in struct acpi_handle_list and allocate it accordingly. Update the users of to struct acpi_handle_list to take the additional dynamic allocation into account. Link: https://lore.kernel.org/linux-acpi/20230809094451.15473-1-ivan.hu@canonical.com # [1] Co-developed-by: Vicki Pfau Signed-off-by: Vicki Pfau Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 10 ++- drivers/acpi/scan.c | 1 + drivers/acpi/thermal.c | 28 ++++++--- drivers/acpi/utils.c | 61 ++++++++++++++++++- .../platform/surface/surface_acpi_notify.c | 10 ++- include/acpi/acpi_bus.h | 9 ++- 6 files changed, 101 insertions(+), 18 deletions(-) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 539e700de4d2..3e756b9b5aa6 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -578,6 +578,7 @@ static bool acpi_lpss_dep(struct acpi_device *adev, acpi_handle handle) { struct acpi_handle_list dep_devices; acpi_status status; + bool ret = false; int i; if (!acpi_has_method(adev->handle, "_DEP")) @@ -591,11 +592,14 @@ static bool acpi_lpss_dep(struct acpi_device *adev, acpi_handle handle) } for (i = 0; i < dep_devices.count; i++) { - if (dep_devices.handles[i] == handle) - return true; + if (dep_devices.handles[i] == handle) { + ret = true; + break; + } } - return false; + acpi_handle_list_free(&dep_devices); + return ret; } static void acpi_lpss_link_consumer(struct device *dev1, diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 691d4b7686ee..7cae369ca33b 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2032,6 +2032,7 @@ static u32 acpi_scan_check_dep(acpi_handle handle, bool check_dep) mutex_unlock(&acpi_dep_list_lock); } + acpi_handle_list_free(&dep_devices); return count; } diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index c303688ead71..42a3df9d625d 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -208,7 +208,7 @@ static bool update_trip_devices(struct acpi_thermal *tz, struct acpi_thermal_trip *acpi_trip, int index, bool compare) { - struct acpi_handle_list devices; + struct acpi_handle_list devices = { 0 }; char method[] = "_PSL"; acpi_status status; @@ -218,18 +218,21 @@ static bool update_trip_devices(struct acpi_thermal *tz, method[3] = '0' + index; } - memset(&devices, 0, sizeof(devices)); - status = acpi_evaluate_reference(tz->device->handle, method, NULL, &devices); if (ACPI_FAILURE(status)) { acpi_handle_info(tz->device->handle, "%s evaluation failure\n", method); return false; } - if (compare && memcmp(&acpi_trip->devices, &devices, sizeof(devices))) + if (acpi_handle_list_equal(&acpi_trip->devices, &devices)) { + acpi_handle_list_free(&devices); + return true; + } + + if (compare) ACPI_THERMAL_TRIPS_EXCEPTION(tz, "device"); - memcpy(&acpi_trip->devices, &devices, sizeof(devices)); + acpi_handle_list_replace(&acpi_trip->devices, &devices); return true; } @@ -842,6 +845,17 @@ static void acpi_thermal_check_fn(struct work_struct *work) mutex_unlock(&tz->thermal_check_lock); } +static void acpi_thermal_free_thermal_zone(struct acpi_thermal *tz) +{ + int i; + + acpi_handle_list_free(&tz->trips.passive.trip.devices); + for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) + acpi_handle_list_free(&tz->trips.active[i].trip.devices); + + kfree(tz); +} + static int acpi_thermal_add(struct acpi_device *device) { struct acpi_thermal_trip *acpi_trip; @@ -968,7 +982,7 @@ static int acpi_thermal_add(struct acpi_device *device) free_trips: kfree(tz->trip_table); free_memory: - kfree(tz); + acpi_thermal_free_thermal_zone(tz); return result; } @@ -988,7 +1002,7 @@ static void acpi_thermal_remove(struct acpi_device *device) flush_workqueue(acpi_thermal_pm_queue); acpi_thermal_unregister_thermal_zone(tz); - kfree(tz); + acpi_thermal_free_thermal_zone(tz); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 2ea14648a661..c6f83c21bb2a 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -370,7 +370,8 @@ acpi_evaluate_reference(acpi_handle handle, goto end; } - if (package->package.count > ACPI_MAX_HANDLES) { + list->handles = kcalloc(package->package.count, sizeof(*list->handles), GFP_KERNEL); + if (!list->handles) { kfree(package); return AE_NO_MEMORY; } @@ -402,7 +403,8 @@ acpi_evaluate_reference(acpi_handle handle, end: if (ACPI_FAILURE(status)) { list->count = 0; - //kfree(list->handles); + kfree(list->handles); + list->handles = NULL; } kfree(buffer.pointer); @@ -412,6 +414,61 @@ acpi_evaluate_reference(acpi_handle handle, EXPORT_SYMBOL(acpi_evaluate_reference); +/** + * acpi_handle_list_equal - Check if two ACPI handle lists are the same + * @list1: First list to compare. + * @list2: Second list to compare. + * + * Return true if the given ACPI handle lists are of the same size and + * contain the same ACPI handles in the same order. Otherwise, return false. + */ +bool acpi_handle_list_equal(struct acpi_handle_list *list1, + struct acpi_handle_list *list2) +{ + return list1->count == list2->count && + !memcmp(list1->handles, list2->handles, + list1->count * sizeof(acpi_handle)); +} +EXPORT_SYMBOL_GPL(acpi_handle_list_equal); + +/** + * acpi_handle_list_replace - Replace one ACPI handle list with another + * @dst: ACPI handle list to replace. + * @src: Source ACPI handle list. + * + * Free the handles table in @dst, move the handles table from @src to @dst, + * copy count from @src to @dst and clear @src. + */ +void acpi_handle_list_replace(struct acpi_handle_list *dst, + struct acpi_handle_list *src) +{ + if (dst->count) + kfree(dst->handles); + + dst->count = src->count; + dst->handles = src->handles; + + src->handles = NULL; + src->count = 0; +} +EXPORT_SYMBOL_GPL(acpi_handle_list_replace); + +/** + * acpi_handle_list_free - Free the handles table in an ACPI handle list + * @list: ACPI handle list to free. + * + * Free the handles table in @list and clear its count field. + */ +void acpi_handle_list_free(struct acpi_handle_list *list) +{ + if (!list->count) + return; + + kfree(list->handles); + list->count = 0; +} +EXPORT_SYMBOL_GPL(acpi_handle_list_free); + acpi_status acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld) { diff --git a/drivers/platform/surface/surface_acpi_notify.c b/drivers/platform/surface/surface_acpi_notify.c index 897cdd9c3aae..0412a644fece 100644 --- a/drivers/platform/surface/surface_acpi_notify.c +++ b/drivers/platform/surface/surface_acpi_notify.c @@ -741,6 +741,7 @@ static bool is_san_consumer(struct platform_device *pdev, acpi_handle handle) struct acpi_handle_list dep_devices; acpi_handle supplier = ACPI_HANDLE(&pdev->dev); acpi_status status; + bool ret = false; int i; if (!acpi_has_method(handle, "_DEP")) @@ -753,11 +754,14 @@ static bool is_san_consumer(struct platform_device *pdev, acpi_handle handle) } for (i = 0; i < dep_devices.count; i++) { - if (dep_devices.handles[i] == supplier) - return true; + if (dep_devices.handles[i] == supplier) { + ret = true; + break; + } } - return false; + acpi_handle_list_free(&dep_devices); + return ret; } static acpi_status san_consumer_setup(acpi_handle handle, u32 lvl, diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 254685085c82..9920611a6faa 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -12,11 +12,9 @@ #include #include -/* TBD: Make dynamic */ -#define ACPI_MAX_HANDLES 10 struct acpi_handle_list { u32 count; - acpi_handle handles[ACPI_MAX_HANDLES]; + acpi_handle* handles; }; /* acpi_utils.h */ @@ -32,6 +30,11 @@ acpi_evaluate_reference(acpi_handle handle, acpi_string pathname, struct acpi_object_list *arguments, struct acpi_handle_list *list); +bool acpi_handle_list_equal(struct acpi_handle_list *list1, + struct acpi_handle_list *list2); +void acpi_handle_list_replace(struct acpi_handle_list *dst, + struct acpi_handle_list *src); +void acpi_handle_list_free(struct acpi_handle_list *list); acpi_status acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, struct acpi_buffer *status_buf); From bda3df10fb1ee9902df718f38349199e44fea3d0 Mon Sep 17 00:00:00 2001 From: Raag Jadav Date: Tue, 3 Oct 2023 13:52:33 +0530 Subject: [PATCH 18/23] ACPI: LPSS: drop BayTrail and Lynxpoint pinctrl HIDs Platform devices are now created by ACPI core on device enumeration on acpi_bus_scan() -> acpi_bus_attach() path after commit 48459340b92b ("ACPI / scan: use platform bus type by default for _HID enumeration"). No need to create them from LPSS unless we explicitly need to set acpi_lpss_pm_domain for them. Signed-off-by: Raag Jadav Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_lpss.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 539e700de4d2..d54cd42c1280 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -368,7 +368,6 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "INT33C4", LPSS_ADDR(lpt_uart_dev_desc) }, { "INT33C5", LPSS_ADDR(lpt_uart_dev_desc) }, { "INT33C6", LPSS_ADDR(lpt_sdio_dev_desc) }, - { "INT33C7", }, /* BayTrail LPSS devices */ { "80860F09", LPSS_ADDR(byt_pwm_dev_desc) }, @@ -376,8 +375,6 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "80860F0E", LPSS_ADDR(byt_spi_dev_desc) }, { "80860F14", LPSS_ADDR(byt_sdio_dev_desc) }, { "80860F41", LPSS_ADDR(byt_i2c_dev_desc) }, - { "INT33B2", }, - { "INT33FC", }, /* Braswell LPSS devices */ { "80862286", LPSS_ADDR(lpss_dma_desc) }, @@ -396,7 +393,6 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { { "INT3434", LPSS_ADDR(lpt_uart_dev_desc) }, { "INT3435", LPSS_ADDR(lpt_uart_dev_desc) }, { "INT3436", LPSS_ADDR(lpt_sdio_dev_desc) }, - { "INT3437", }, /* Wildcat Point LPSS devices */ { "INT3438", LPSS_ADDR(lpt_spi_dev_desc) }, @@ -657,10 +653,9 @@ static int acpi_lpss_create_device(struct acpi_device *adev, int ret; dev_desc = (const struct lpss_device_desc *)id->driver_data; - if (!dev_desc) { - pdev = acpi_create_platform_device(adev, NULL); - return IS_ERR_OR_NULL(pdev) ? PTR_ERR(pdev) : 1; - } + if (!dev_desc) + return -EINVAL; + pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; From 046ece773cc77ef5d2a1431b188ac3d0840ed150 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 2 Oct 2023 16:46:29 +0300 Subject: [PATCH 19/23] ACPI: property: Allow _DSD buffer data only for byte accessors In accordance with ACPI specificication and _DSD data buffer representation the data there is an array of bytes. Hence, accessing it with something longer will create a sparse data which is against of how device property APIs work in general and also not defined in the ACPI specification (see [1]). Fix the code to emit an error if non-byte accessor is used to retrieve _DSD buffer data. Fixes: 369af6bf2c28 ("ACPI: property: Read buffer properties as integers") Link: https://uefi.org/specs/ACPI/6.5/19_ASL_Reference.html#buffer-declare-buffer-object # [1] Signed-off-by: Andy Shevchenko [ rjw: Add missing braces ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/property.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 413e4fcadcaf..99b4e3355435 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -1102,25 +1102,26 @@ static int acpi_data_prop_read(const struct acpi_device_data *data, switch (proptype) { case DEV_PROP_STRING: break; - case DEV_PROP_U8 ... DEV_PROP_U64: + default: if (obj->type == ACPI_TYPE_BUFFER) { if (nval > obj->buffer.length) return -EOVERFLOW; - break; + } else { + if (nval > obj->package.count) + return -EOVERFLOW; } - fallthrough; - default: - if (nval > obj->package.count) - return -EOVERFLOW; break; } if (nval == 0) return -EINVAL; - if (obj->type != ACPI_TYPE_BUFFER) - items = obj->package.elements; - else + if (obj->type == ACPI_TYPE_BUFFER) { + if (proptype != DEV_PROP_U8) + return -EPROTO; items = obj; + } else { + items = obj->package.elements; + } switch (proptype) { case DEV_PROP_U8: From 43451c4bf9b049e67c48e74a31edd8eced27d8ea Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 2 Oct 2023 16:46:30 +0300 Subject: [PATCH 20/23] ACPI: property: Document the _DSD data buffer GUID As the rest of the GUIDs document one for _DSD data buffer so it will be eaisier to search for on internet or documentation. Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki --- drivers/acpi/property.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 99b4e3355435..6979a3f9f90a 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -55,6 +55,7 @@ static const guid_t ads_guid = GUID_INIT(0xdbb8e3e6, 0x5886, 0x4ba6, 0x87, 0x95, 0x13, 0x19, 0xf5, 0x2a, 0x96, 0x6b); +/* ACPI _DSD data buffer GUID: edb12dd0-363d-4085-a3d2-49522ca160c4 */ static const guid_t buffer_prop_guid = GUID_INIT(0xedb12dd0, 0x363d, 0x4085, 0xa3, 0xd2, 0x49, 0x52, 0x2c, 0xa1, 0x60, 0xc4); From 6c766f7aacc0fa5b461ca3d8067c9065a6a53ef4 Mon Sep 17 00:00:00 2001 From: Jonathan Bergh Date: Thu, 28 Sep 2023 23:48:07 +0200 Subject: [PATCH 21/23] ACPI: utils: Fix up white space in a few places Fix up the following formatting issues flagged by checkpatch: * Remove indentation before goto label * Remove whitespace ahead of a comma in parameter list Signed-off-by: Jonathan Bergh [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/utils.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index c6f83c21bb2a..0fcb3cf89ad2 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -400,7 +400,7 @@ acpi_evaluate_reference(acpi_handle handle, acpi_handle_debug(list->handles[i], "Found in reference list\n"); } - end: +end: if (ACPI_FAILURE(status)) { list->count = 0; kfree(list->handles); @@ -580,7 +580,7 @@ acpi_handle_printk(const char *level, acpi_handle handle, const char *fmt, ...) vaf.va = &args; path = acpi_handle_path(handle); - printk("%sACPI: %s: %pV", level, path ? path : "" , &vaf); + printk("%sACPI: %s: %pV", level, path ? path : "", &vaf); va_end(args); kfree(path); From 6b54bdd1685a3e81dd062b6886e8e729e5b2a8ee Mon Sep 17 00:00:00 2001 From: Jonathan Bergh Date: Thu, 28 Sep 2023 23:48:23 +0200 Subject: [PATCH 22/23] ACPI: utils: Remove redundant braces around individual statement Remove braces that are not required for a one-line statement which follows a control statement. Signed-off-by: Jonathan Bergh [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki --- drivers/acpi/utils.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 0fcb3cf89ad2..79915d4a0031 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -342,9 +342,8 @@ acpi_evaluate_reference(acpi_handle handle, u32 i = 0; - if (!list) { + if (!list) return AE_BAD_PARAMETER; - } /* Evaluate object. */ From 0da9eccde3270b832c059ad618bf66e510c75d33 Mon Sep 17 00:00:00 2001 From: Werner Sembach Date: Mon, 16 Oct 2023 18:08:28 +0200 Subject: [PATCH 23/23] ACPI: resource: Do IRQ override on TongFang GMxXGxx The TongFang GMxXGxx/TUXEDO Stellaris/Pollaris Gen5 needs IRQ overriding for the keyboard to work. Adding an entry for this laptop to the override_table makes the internal keyboard functional. Signed-off-by: Werner Sembach Cc: All applicable Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/resource.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 18f6353c142e..15a3bdbd0755 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -497,6 +497,18 @@ static const struct dmi_system_id irq1_edge_low_force_override[] = { DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), }, }, + { + /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"), + }, + }, + { + /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"), + }, + }, { /* MAINGEAR Vector Pro 2 15 */ .matches = {