[PATCH v2] usb: usbip: vudc: Fix WARN_ON() usage pattern

[Krzysztof Opasiak]

Fix WARN_ON() macro usage as suggested by Felipe.
Instead of using:
if (cond) {
   WARN_ON(1);
   do_stuff();
}

Use a better pattern with WARN_ON() placed in if condition:

if (WARN_ON(cond))
   do_stuff();

Signed-off-by: Krzysztof Opasiak <k.opas...@samsung.com>
---
Changes since v1:
- Update commit message
---
 drivers/usb/usbip/vudc_dev.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
index 43047f4..0523f29 100644
--- a/drivers/usb/usbip/vudc_dev.c
+++ b/drivers/usb/usbip/vudc_dev.c
@@ -312,10 +312,9 @@ static void vep_free_request(struct usb_ep *_ep, struct 
usb_request *_req)
 {
        struct vrequest *req;
 
-       if (!_ep || !_req) {
-               WARN_ON(1);
+       if (WARN_ON(!_ep || !_req))
                return;
-       }
+
        req = to_vrequest(_req);
        kfree(req);
 }
-- 
1.7.9.5

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