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ACPI / bus: Introduce acpi_get_match_data() function

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OF has of_device_get_match_data() function to extract driver specific data
structure. Add a similar function for ACPI.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Sinan Kaya 2017-12-13 02:20:48 -05:00 • committed by Vinod Koul
parent 4fbd8d194f
commit 80212a1623
2 changed files with 24 additions and 0 deletions
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18
drivers/acpi/bus.c
View file

@ -785,6 +785,24 @@ const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
} }
EXPORT_SYMBOL_GPL(acpi_match_device); EXPORT_SYMBOL_GPL(acpi_match_device);
void *acpi_get_match_data(const struct device *dev)
{
const struct acpi_device_id *match;
if (!dev->driver)
return NULL;
if (!dev->driver->acpi_match_table)
return NULL;
match = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!match)
return NULL;
return (void *)match->driver_data;
}
EXPORT_SYMBOL_GPL(acpi_get_match_data);
int acpi_match_device_ids(struct acpi_device *device, int acpi_match_device_ids(struct acpi_device *device,
const struct acpi_device_id *ids) const struct acpi_device_id *ids)
{ {

6
include/linux/acpi.h
View file

@ -584,6 +584,7 @@ extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
const struct device *dev); const struct device *dev);
void *acpi_get_match_data(const struct device *dev);
extern bool acpi_driver_match_device(struct device *dev, extern bool acpi_driver_match_device(struct device *dev,
const struct device_driver *drv); const struct device_driver *drv);
int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
@ -755,6 +756,11 @@ static inline const struct acpi_device_id *acpi_match_device(
return NULL; return NULL;
} }
static inline void *acpi_get_match_data(const struct device *dev)
{
return NULL;
}
static inline bool acpi_driver_match_device(struct device *dev, static inline bool acpi_driver_match_device(struct device *dev,
const struct device_driver *drv) const struct device_driver *drv)
{ {