driver_find_device: Unify the match function with class_find_device()

The driver_find_device() accepts a match function pointer to
filter the devices for lookup, similar to bus/class_find_device().
However, there is a minor difference in the prototype for the
match parameter for driver_find_device() with the now unified
version accepted by {bus/class}_find_device(), where it doesn't
accept a "const" qualifier for the data argument. This prevents
us from reusing the generic match functions for driver_find_device().

For this reason, change the prototype of the driver_find_device() to
make the "match" parameter in line with {bus/class}_find_device()
and adjust its callers to use the const qualifier. Also, we could
now promote the "data" parameter to const as we pass it down
as a const parameter to the match functions.

Cc: Corey Minyard <[email protected]>
Cc: Russell King <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Peter Oberparleiter <[email protected]>
Cc: Sebastian Ott <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Nehal Shah <[email protected]>
Cc: Shyam Sundar S K <[email protected]>
Cc: Lee Jones <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index cbbdcadc660e..4d7c88131a4d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -336,8 +336,8 @@ extern int __must_check driver_for_each_device(struct device_driver *drv,
 					       int (*fn)(struct device *dev,
 							 void *));
 struct device *driver_find_device(struct device_driver *drv,
-				  struct device *start, void *data,
-				  int (*match)(struct device *dev, void *data));
+				  struct device *start, const void *data,
+				  int (*match)(struct device *dev, const void *data));
 
 void driver_deferred_probe_add(struct device *dev);
 int driver_deferred_probe_check_state(struct device *dev);