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ACPI: provide acpi_bus_find_device_by_name()

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Provide a helper allowing to locate an ACPI device by its name.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260504-baytrail-real-swnode-v5-1-c7878b69e383@oss.qualcomm.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Bartosz Golaszewski 2026-05-04 12:58:56 +02:00 committed by Ilpo Järvinen
parent fa84425e53
commit 083a59e05d
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GPG Key ID: 59AC4F6153E5CE31
2 changed files with 22 additions and 0 deletions
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15
drivers/acpi/bus.c
View File

@ -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;

7
include/linux/acpi.h
View File

@ -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)
{