From 6cda08a20dbde45b021091230c8a359fa08c5103 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Tue, 23 Jul 2019 23:18:32 +0100 Subject: drivers: Introduce device lookup variants by name Add a helper to match the device name for device lookup. Also reuse this generic exported helper for the existing bus_find_device_by_name(). and add similar variants for driver/class. Cc: Alessandro Zummo Cc: Alexander Aring Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Dan Murphy Cc: Harald Freudenberger Cc: Heiko Carstens Cc: Jacek Anaszewski Cc: Lee Jones Cc: linux-leds@vger.kernel.org Cc: linux-rtc@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: linux-wpan@vger.kernel.org Cc: Maxime Coquelin Cc: Pavel Machek Cc: Peter Oberparleiter Cc: "Rafael J. Wysocki" Cc: Stefan Schmidt Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Signed-off-by: Suzuki K Poulose Reviewed-by: Heikki Krogerus Acked-by: Alexandre Belloni Link: https://lore.kernel.org/r/20190723221838.12024-2-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman --- drivers/s390/cio/ccwgroup.c | 10 +--------- drivers/s390/cio/device.c | 15 +-------------- drivers/s390/crypto/zcrypt_api.c | 11 +---------- 3 files changed, 3 insertions(+), 33 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index c522e9313c50..d843e362c167 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -608,13 +608,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) } EXPORT_SYMBOL(ccwgroup_driver_unregister); -static int __ccwgroupdev_check_busid(struct device *dev, const void *id) -{ - const char *bus_id = id; - - return (strcmp(bus_id, dev_name(dev)) == 0); -} - /** * get_ccwgroupdev_by_busid() - obtain device from a bus id * @gdrv: driver the device is owned by @@ -631,8 +624,7 @@ struct ccwgroup_device *get_ccwgroupdev_by_busid(struct ccwgroup_driver *gdrv, { struct device *dev; - dev = driver_find_device(&gdrv->driver, NULL, bus_id, - __ccwgroupdev_check_busid); + dev = driver_find_device_by_name(&gdrv->driver, bus_id); return dev ? to_ccwgroupdev(dev) : NULL; } diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index c421899be20f..131430bd48d9 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1695,18 +1695,6 @@ int ccw_device_force_console(struct ccw_device *cdev) EXPORT_SYMBOL_GPL(ccw_device_force_console); #endif -/* - * get ccw_device matching the busid, but only if owned by cdrv - */ -static int -__ccwdev_check_busid(struct device *dev, const void *id) -{ - const char *bus_id = id; - - return (strcmp(bus_id, dev_name(dev)) == 0); -} - - /** * get_ccwdev_by_busid() - obtain device from a bus id * @cdrv: driver the device is owned by @@ -1723,8 +1711,7 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv, { struct device *dev; - dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id, - __ccwdev_check_busid); + dev = driver_find_device_by_name(&cdrv->driver, bus_id); return dev ? to_ccwdev(dev) : NULL; } diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 1058b4b5cc1e..38a5a47b8c9c 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 name for find_zcdndev_by_name() */ -static int __match_zcdn_name(struct device *dev, const void *data) -{ - return strcmp(dev_name(dev), (const char *)data) == 0; -} - /* helper function, matches the devt value for find_zcdndev_by_devt() */ static int __match_zcdn_devt(struct device *dev, const void *data) { @@ -152,10 +146,7 @@ static int __match_zcdn_devt(struct device *dev, const void *data) */ static inline struct zcdn_device *find_zcdndev_by_name(const char *name) { - struct device *dev = - class_find_device(zcrypt_class, NULL, - (void *) name, - __match_zcdn_name); + struct device *dev = class_find_device_by_name(zcrypt_class, name); return dev ? to_zcdn_dev(dev) : NULL; } -- cgit