From 4495dfdd6193d9712b7b8f5d699d89d5996e6aaa Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Tue, 23 Jul 2019 23:18:35 +0100 Subject: drivers: Introduce device lookup variants by device type Add a helper to match a device by its type and provide wrappers for {bus/class/driver}_find_device() APIs. Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Harald Freudenberger Cc: Heiko Carstens Cc: linux-usb@vger.kernel.org Cc: Oliver Neukum Cc: Sebastian Andrzej Siewior Cc: Tomas Winkler Cc: "Rafael J. Wysocki" Cc: Greg Kroah-Hartman Cc: Ulf Hansson Cc: Joe Perches Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20190723221838.12024-5-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman --- drivers/s390/crypto/zcrypt_api.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 38a5a47b8c9c..150f6236c9bb 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 @@ -158,10 +152,7 @@ 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, devt); return dev ? to_zcdn_dev(dev) : NULL; } -- cgit v1.2.3-59-g8ed1b