This is a note to let you know that I've just added the patch titled
net: allwinner: emac: Add missing free_irq
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-allwinner-emac-add-missing-free_irq.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From e9c56f8d2f851fb6d6ce6794c0f5463b862a878e Mon Sep 17 00:00:00 2001
From: Maxime Ripard <[email protected]>
Date: Tue, 10 Dec 2013 19:40:43 +0100
Subject: net: allwinner: emac: Add missing free_irq
From: Maxime Ripard <[email protected]>
commit e9c56f8d2f851fb6d6ce6794c0f5463b862a878e upstream.
The sun4i-emac driver uses devm_request_irq at .ndo_open time, but relies on
the managed device mechanism to actually free it. This causes an issue whenever
someone wants to restart the interface, the interrupt still being held, and not
yet released.
Fall back to using the regular request_irq at .ndo_open time, and introduce a
free_irq during .ndo_stop.
Signed-off-by: Maxime Ripard <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/ethernet/allwinner/sun4i-emac.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
@@ -717,8 +717,7 @@ static int emac_open(struct net_device *
if (netif_msg_ifup(db))
dev_dbg(db->dev, "enabling %s\n", dev->name);
- if (devm_request_irq(db->dev, dev->irq, &emac_interrupt,
- 0, dev->name, dev))
+ if (request_irq(dev->irq, &emac_interrupt, 0, dev->name, dev))
return -EAGAIN;
/* Initialize EMAC board */
@@ -774,6 +773,8 @@ static int emac_stop(struct net_device *
emac_shutdown(ndev);
+ free_irq(ndev->irq, ndev);
+
return 0;
}
Patches currently in stable-queue which might be from
[email protected] are
queue-3.12/net-allwinner-emac-add-missing-free_irq.patch
queue-3.12/arm-sun6i-dt-fix-interrupt-trigger-types.patch
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