net: lan78xx: fix transfer-buffer memory leak

[ Upstream commit 63634aa679ba8b5e306ad0727120309ae6ba8a8e ]

The interrupt URB transfer-buffer was never freed on disconnect or after
probe errors.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 3be92fff89b1aeeb3c008b65c9c5fc1d72463f01..895f307979c826283521fdd3497c4ec3ad14dc5e 100644 (file)
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -3658,6 +3658,7 @@ static int lan78xx_probe(struct usb_interface *intf,
                        usb_fill_int_urb(dev->urb_intr, dev->udev,
                                         dev->pipe_intr, buf, maxp,
                                         intr_complete, dev, period);
+                       dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
                }
        }