linux-kernel - [ 047/171] sky2: Fix for interrupt handler

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Message-Id: <20121122004038.088905943@linuxfoundation.org>
Date:	Wed, 21 Nov 2012 16:39:53 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Mirko Lindner <mlindner@...vell.com>,
	"David S. Miller" <davem@...emloft.net>,
	Jonathan Nieder <jrnieder@...il.com>
Subject: [ 047/171] sky2: Fix for interrupt handler

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mirko Lindner <mlindner@...vell.com>

commit d663d181b9e92d80c2455e460e932d34e7a2a7ae upstream.

Re-enable interrupts if it is not our interrupt

Signed-off-by: Mirko Lindner <mlindner@...vell.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Cc: Jonathan Nieder <jrnieder@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/ethernet/marvell/sky2.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -3079,8 +3079,10 @@ static irqreturn_t sky2_intr(int irq, vo
 
 	/* Reading this mask interrupts as side effect */
 	status = sky2_read32(hw, B0_Y2_SP_ISRC2);
-	if (status == 0 || status == ~0)
+	if (status == 0 || status == ~0) {
+		sky2_write32(hw, B0_Y2_SP_ICR, 2);
 		return IRQ_NONE;
+	}
 
 	prefetch(&hw->st_le[hw->st_idx]);
 


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