Add a wrapper to driver_find_device() to search for a device by the ACPI COMPANION device, reusing the generic match function.
Cc: Greg Kroah-Hartman <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> --- include/linux/device.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 77f817d..a2a8ac2 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -481,6 +481,27 @@ static inline struct device *driver_find_next_device(struct device_driver *drv, return driver_find_device(drv, start, NULL, device_match_any); } +#ifdef CONFIG_ACPI +/** + * driver_find_device_by_acpi_dev : device iterator for locating a particular + * device matching the ACPI_COMPANION device. + * @driver: the driver we're iterating + * @adev: ACPI_COMPANION device to match. + */ +static inline struct device * +driver_find_device_by_acpi_dev(struct device_driver *drv, + const struct acpi_device *adev) +{ + return driver_find_device(drv, NULL, adev, device_match_acpi_dev); +} +#else +static inline struct device * +driver_find_device_by_acpi_dev(struct device_driver *drv, const void *adev) +{ + return NULL; +} +#endif + void driver_deferred_probe_add(struct device *dev); int driver_deferred_probe_check_state(struct device *dev); -- 2.7.4
