[PATCH v4 07/10] staging: most: usb: check for NULL device

[Christian Gromm]

Check if the dci structer has been allocated before trying to release it.

Signed-off-by: Christian Gromm <christian.gromm at microchip.com>
---
v3:
	This patch has beed added to the series.
v4:

 drivers/staging/most/usb/usb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/most/usb/usb.c b/drivers/staging/most/usb/usb.c
index 3c8ae17..857f916 100644
--- a/drivers/staging/most/usb/usb.c
+++ b/drivers/staging/most/usb/usb.c
@@ -1217,7 +1217,8 @@ static void hdm_disconnect(struct usb_interface *interface)
 	del_timer_sync(&mdev->link_stat_timer);
 	cancel_work_sync(&mdev->poll_work_obj);
 
-	device_unregister(&mdev->dci->dev);
+	if (mdev->dci)
+		device_unregister(&mdev->dci->dev);
 	most_deregister_interface(&mdev->iface);
 
 	kfree(mdev->busy_urbs);
-- 
2.7.4