From: Johan Hovold <johan@xxxxxxxxxx>
commit b14a39048c1156cfee76228bf449852da2f14df8 upstream.
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: 2824bd250f0b ("[PATCH] USB: add ldusb driver")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 2.6.13
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20191010125835.27031-2-johan@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/misc/ldusb.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -380,10 +380,7 @@ static int ld_usb_release(struct inode *
goto exit;
}
- if (mutex_lock_interruptible(&dev->mutex)) {
- retval = -ERESTARTSYS;
- goto exit;
- }
+ mutex_lock(&dev->mutex);
if (dev->open_count != 1) {
retval = -ENODEV;
