linux-kernel - [RFC PATCH 19/57] drivers: usb: core: Use bus_find_device_by

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Date:   Mon,  3 Jun 2019 16:49:45 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, rafael@...nel.org,
        suzuki.poulose@....com, Oliver Neukum <oneukum@...e.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        linux-usb@...r.kernel.org
Subject: [RFC PATCH 19/57] drivers: usb: core: Use bus_find_device_by_devt helper

Switch to using the bus_find_device_by_devt helper

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Oliver Neukum <oneukum@...e.com>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-usb@...r.kernel.org
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 drivers/usb/core/devio.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index fa783531..28358a3 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -947,17 +947,11 @@ static int parse_usbdevfs_streams(struct usb_dev_state *ps,
 	return ret;
 }
 
-static int match_devt(struct device *dev, void *data)
-{
-	return dev->devt == (dev_t) (unsigned long) 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, NULL, devt);
 	if (!dev)
 		return NULL;
 	return to_usb_device(dev);
-- 
2.7.4