mirror of https://github.com/hak5/openwrt-owl.git
47 lines
1.5 KiB
Diff
47 lines
1.5 KiB
Diff
From e9c56f8d2f851fb6d6ce6794c0f5463b862a878e Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime.ripard@free-electrons.com>
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Date: Tue, 10 Dec 2013 19:40:43 +0100
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Subject: [PATCH] net: allwinner: emac: Add missing free_irq
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The sun4i-emac driver uses devm_request_irq at .ndo_open time, but relies on
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the managed device mechanism to actually free it. This causes an issue whenever
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someone wants to restart the interface, the interrupt still being held, and not
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yet released.
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Fall back to using the regular request_irq at .ndo_open time, and introduce a
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free_irq during .ndo_stop.
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Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Cc: stable@vger.kernel.org # 3.11+
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/allwinner/sun4i-emac.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c
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index 50b853a..46dfb13 100644
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--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
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+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
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@@ -717,8 +717,7 @@ static int emac_open(struct net_device *dev)
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if (netif_msg_ifup(db))
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dev_dbg(db->dev, "enabling %s\n", dev->name);
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- if (devm_request_irq(db->dev, dev->irq, &emac_interrupt,
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- 0, dev->name, dev))
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+ if (request_irq(dev->irq, &emac_interrupt, 0, dev->name, dev))
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return -EAGAIN;
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/* Initialize EMAC board */
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@@ -774,6 +773,8 @@ static int emac_stop(struct net_device *ndev)
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emac_shutdown(ndev);
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+ free_irq(ndev->irq, ndev);
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+
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return 0;
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}
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--
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1.8.5.1
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