commit a2fd23b93733bf604870eb8a15ccaa74c9b23889
author Shuah Khan <shuah@kernel.org> Fri Jan 25 09:05:42 2019 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Wed Jan 30 09:22:35 2019 +0100
tree 090b841170cee642f90eda8f43a9d0fd894e4501
parent f91649c525880006c78e62f6bae4d802a590c3ba

usbip: Fix vep_free_request() null pointer checks on input args

Fix vep_free_request() to return when usb_ep and usb_request are null
instead of calling WARN_ON.

Signed-off-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/usbip/vudc_dev.c

diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
index 1634d86..a72c17f 100644
--- a/drivers/usb/usbip/vudc_dev.c
+++ b/drivers/usb/usbip/vudc_dev.c
@@ -297,7 +297,8 @@ static void vep_free_request(struct usb_ep *_ep, struct usb_request *_req)
 {
 	struct vrequest *req;
 
-	if (WARN_ON(!_ep || !_req))
+	/* ep is always valid here - see usb_ep_free_request() */
+	if (!_req)
 		return;
 
 	req = to_vrequest(_req);