If disconnect() races with release() after a process has been
interrupted, release() could end up returning early and the driver would
fail to free its driver data.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/misc/legousbtower.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 9d4c52a7ebe0..62dab2441ec4 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -419,10 +419,7 @@ static int tower_release (struct inode *inode, struct file *file)
goto exit;
}
- if (mutex_lock_interruptible(&dev->lock)) {
- retval = -ERESTARTSYS;
- goto exit;
- }
+ mutex_lock(&dev->lock);
if (dev->open_count != 1) {
dev_dbg(&dev->udev->dev, "%s: device not opened exactly once\n",
--
2.23.0
