[RFC PATCH 37/57] drivers: s390: zcrypt: Use class_find_device_by_devt helper

Suzuki K Poulose
2019-06-03T15:53:20Z

Use the generic helper to find a device matching the devt.

Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/s390/crypto/zcrypt_api.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 16cad8e..99c9b77 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -133,12 +133,6 @@ struct zcdn_device {
static int zcdn_create(const char *name);
static int zcdn_destroy(const char *name);

-/* helper function, matches the devt value for find_zcdndev_by_devt() */
-static int __match_zcdn_devt(struct device *dev, const void *data)
-{
- return dev->devt == *((dev_t *) data);
-}
-
/*
* Find zcdn device by name.
* Returns reference to the zcdn device which needs to be released
@@ -159,10 +153,7 @@ static inline struct zcdn_device *find_zcdndev_by_name(const char *name)
*/
static inline struct zcdn_device *find_zcdndev_by_devt(dev_t devt)
{
- struct device *dev =
- class_find_device(zcrypt_class, NULL,
- (void *) &devt,
- __match_zcdn_devt);
+ struct device *dev = class_find_device_by_devt(zcrypt_class, NULL, devt);

return dev ? to_zcdn_dev(dev) : NULL;
}
--
2.7.4