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authorSuzuki K Poulose <suzuki.poulose@arm.com>2019-07-23 23:18:35 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-30 13:07:42 +0200
commit4495dfdd6193d9712b7b8f5d699d89d5996e6aaa (patch)
treeaa15b229fd464d03088a71c613fdf0b445c2e89b /drivers/usb
parent67843bbaf36eb087714f40e783ee78e99e9e4b86 (diff)
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 <alexander.shishkin@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-usb@vger.kernel.org Cc: Oliver Neukum <oneukum@suse.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20190723221838.12024-5-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/devio.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index b265ab5405f9..60268aee93a8 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -942,17 +942,11 @@ error:
return ret;
}
-static int match_devt(struct device *dev, const void *data)
-{
- return dev->devt == (dev_t)(unsigned long)(void *)data;
-}
-
static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
{
struct device *dev;
- dev = bus_find_device(&usb_bus_type, NULL,
- (void *) (unsigned long) devt, match_devt);
+ dev = bus_find_device_by_devt(&usb_bus_type, devt);
if (!dev)
return NULL;
return to_usb_device(dev);