From 083a59e05db9203c346e87d822c0c12a0f7a7c85 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 4 May 2026 12:58:56 +0200 Subject: [PATCH] ACPI: provide acpi_bus_find_device_by_name() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Provide a helper allowing to locate an ACPI device by its name. Signed-off-by: Bartosz Golaszewski Acked-by: Rafael J. Wysocki (Intel) Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20260504-baytrail-real-swnode-v5-1-c7878b69e383@oss.qualcomm.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- drivers/acpi/bus.c | 15 +++++++++++++++ include/linux/acpi.h | 7 +++++++ 2 files changed, 22 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 2ec095e2009e..357b39db345d 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1181,6 +1181,21 @@ int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data) } EXPORT_SYMBOL_GPL(acpi_bus_for_each_dev); +/** + * acpi_bus_find_device_by_name() - Locate an ACPI device by its name + * @name: Name of the device to match + * + * The caller is responsible for calling put_device() on the returned object. + * + * Returns: + * New reference to the matched device or NULL if the device can't be found. + */ +struct device *acpi_bus_find_device_by_name(const char *name) +{ + return bus_find_device_by_name(&acpi_bus_type, NULL, name); +} +EXPORT_SYMBOL_GPL(acpi_bus_find_device_by_name); + struct acpi_dev_walk_context { int (*fn)(struct acpi_device *, void *); void *data; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 67effb91fa98..10d6c6c11bdf 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -798,6 +798,8 @@ int acpi_get_local_u64_address(acpi_handle handle, u64 *addr); int acpi_get_local_address(acpi_handle handle, u32 *addr); const char *acpi_get_subsystem_id(acpi_handle handle); +struct device *acpi_bus_find_device_by_name(const char *name); + #ifdef CONFIG_ACPI_MRRM int acpi_mrrm_max_mem_region(void); #endif @@ -1106,6 +1108,11 @@ static inline const char *acpi_get_subsystem_id(acpi_handle handle) return ERR_PTR(-ENODEV); } +static inline struct device *acpi_bus_find_device_by_name(const char *name) +{ + return NULL; +} + static inline int acpi_register_wakeup_handler(int wake_irq, bool (*wakeup)(void *context), void *context) {