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/hwtracing/intel_th/core.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) (limited to 'drivers/hwtracing/intel_th') diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 55922896d862..d5c1821b31c6 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -789,12 +789,6 @@ static int intel_th_populate(struct intel_th *th) return 0; } -static int match_devt(struct device *dev, const void *data) -{ - dev_t devt = (dev_t)(unsigned long)(void *)data; - return dev->devt == devt; -} - static int intel_th_output_open(struct inode *inode, struct file *file) { const struct file_operations *fops; @@ -802,9 +796,7 @@ static int intel_th_output_open(struct inode *inode, struct file *file) struct device *dev; int err; - dev = bus_find_device(&intel_th_bus, NULL, - (void *)(unsigned long)inode->i_rdev, - match_devt); + dev = bus_find_device_by_devt(&intel_th_bus, inode->i_rdev); if (!dev || !dev->driver) return -ENODEV; -- cgit v1.2.3