orinoco_usb: fix memory leak in ezusb_access_ltv() when device disconnected

If "device is disconnected" check occurs to be true in ezusb_access_ltv(),
it just return -ENODEV. But that means request_context is leaked since
there are no any references to it anymore.
The patch adds a call to ezusb_request_context_put() before return.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/orinoco/orinoco_usb.c b/drivers/net/wireless/orinoco/orinoco_usb.c
index 1f9cb55..bdfe637 100644 (file)
--- a/drivers/net/wireless/orinoco/orinoco_usb.c
+++ b/drivers/net/wireless/orinoco/orinoco_usb.c
@@ -881,7 +881,8 @@ static int ezusb_access_ltv(struct ezusb_priv *upriv,
 
        if (!upriv->udev) {
                dbg("Device disconnected");
-               return -ENODEV;
+               retval = -ENODEV;
+               goto exit;
        }
 
        if (upriv->read_urb->status != -EINPROGRESS)