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| author | Sinan Kaya <okaya@codeaurora.org> | 2017-12-13 02:20:48 -0500 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-12-13 14:10:57 +0530 |
| commit | 80212a162329e590fde02d8457af16ea0ab0a55f (patch) | |
| tree | 054a70992f391a682093d1234f35b7b0a9994685 | |
| parent | 4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff) | |
| download | linux-80212a162329e590fde02d8457af16ea0ab0a55f.tar.bz2 | |
ACPI / bus: Introduce acpi_get_match_data() function
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>
| -rw-r--r-- | drivers/acpi/bus.c | 18 | ||||
| -rw-r--r-- | include/linux/acpi.h | 6 |
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 4d0979e02a28..f87ed3be779a 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -785,6 +785,24 @@ const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, } 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, const struct acpi_device_id *ids) { diff --git a/include/linux/acpi.h b/include/linux/acpi.h index dc1ebfeeb5ec..927873751323 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -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 device *dev); +void *acpi_get_match_data(const struct device *dev); extern bool acpi_driver_match_device(struct device *dev, const struct device_driver *drv); 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; } +static inline void *acpi_get_match_data(const struct device *dev) +{ + return NULL; +} + static inline bool acpi_driver_match_device(struct device *dev, const struct device_driver *drv) { |