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net: allwinner: emac: Add missing free_irq

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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>
This commit is contained in:
Maxime Ripard 2014-06-23 22:49:40 +02:00 committed by David S. Miller
parent 40c9f8ab6c
commit b91113282b
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/allwinner/sun4i-emac.c
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@ -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;
}