staging: mei: unlock dev->device_lock mutex on error path in mei_open()
mei_open() acquires dev->device_lock mutex and try to allocate mei_cl,
but if the allocation fails it goes to return statement. As a result
dev->device_lock left locked.
The patch fixes goto to unlock dev->device_lock mutex on this path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/mei/main.c b/drivers/staging/mei/main.c
index 8d76785..78028f8 100644
--- a/drivers/staging/mei/main.c
+++ b/drivers/staging/mei/main.c
@@ -413,7 +413,7 @@
err = -ENOMEM;
cl = mei_cl_allocate(dev);
if (!cl)
- goto out;
+ goto out_unlock;
err = -ENODEV;
if (dev->mei_state != MEI_ENABLED) {