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[5.12,196/700] HID: do not use down_interruptible() when unbinding devices

Message ID 20210712060954.576261950@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman July 12, 2021, 6:04 a.m. UTC 
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

[ Upstream commit f2145f8dc566c4f3b5a8deb58dcd12bed4e20194 ]

Action of unbinding driver from a device is not cancellable and should not
fail, and driver core does not pay attention to the result of "remove"
method, therefore using down_interruptible() in hid_device_remove() does
not make sense.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-core.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 0f69f35f2957..5550c943f985 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2306,12 +2306,8 @@  static int hid_device_remove(struct device *dev)
 {
 	struct hid_device *hdev = to_hid_device(dev);
 	struct hid_driver *hdrv;
-	int ret = 0;
 
-	if (down_interruptible(&hdev->driver_input_lock)) {
-		ret = -EINTR;
-		goto end;
-	}
+	down(&hdev->driver_input_lock);
 	hdev->io_started = false;
 
 	hdrv = hdev->driver;
@@ -2326,8 +2322,8 @@  static int hid_device_remove(struct device *dev)
 
 	if (!hdev->io_started)
 		up(&hdev->driver_input_lock);
-end:
-	return ret;
+
+	return 0;
 }
 
 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,