to_vep() is doing a container_of() on _ep. It is better to do the NULL
check first and then use it.

Signed-off-by: Sudip Mukherjee <[email protected]>
---
 drivers/usb/usbip/vudc_dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
index 968471b..32ea604 100644
--- a/drivers/usb/usbip/vudc_dev.c
+++ b/drivers/usb/usbip/vudc_dev.c
@@ -388,10 +388,10 @@ static int vep_dequeue(struct usb_ep *_ep, struct 
usb_request *_req)
        unsigned long flags;
        int ret = 0;
 
-       ep = to_vep(_ep);
        if (!_ep)
                return -EINVAL;
 
+       ep = to_vep(_ep);
        udc = ep_to_vudc(ep);
        if (!udc->driver)
                return -ESHUTDOWN;
-- 
1.9.1

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