net: allwinner: emac: Add missing free_irq
authorMaxime Ripard <maxime.ripard@free-electrons.com>
Mon, 23 Jun 2014 20:49:40 +0000 (22:49 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 25 Jun 2014 23:31:17 +0000 (16:31 -0700)
If the mdio probe function fails in emac_open, the interrupt we just requested
isn't freed. If emac_open is called again, for example because we try to set up
the interface again, the kernel will oops because the interrupt wasn't properly
released.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/allwinner/sun4i-emac.c

index 28460676b8ca49d2389baa7f17f0730a007cd583..d81e7167a8b550258048148b0c8c63c156ad5a1f 100644 (file)
@@ -736,6 +736,7 @@ static int emac_open(struct net_device *dev)
 
        ret = emac_mdio_probe(dev);
        if (ret < 0) {
+               free_irq(dev->irq, dev);
                netdev_err(dev, "cannot probe MDIO bus\n");
                return ret;
        }