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| author | Sinan Kaya <okaya@codeaurora.org> | 2017-12-13 08:20:48 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-12-13 09:40:57 +0100 |
| commit | 80212a162329e590fde02d8457af16ea0ab0a55f (patch) | |
| tree | 054a70992f391a682093d1234f35b7b0a9994685 /drivers/acpi | |
| parent | Linux 4.15-rc1 (diff) | |
| download | linux-80212a162329e590fde02d8457af16ea0ab0a55f.tar.xz linux-80212a162329e590fde02d8457af16ea0ab0a55f.zip | |
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>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/bus.c | 18 |
1 files changed, 18 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) { |