linux-kernel - [PATCH 188/241] sky2: Fix for interrupt handler

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Message-Id: <1355407206-17100-189-git-send-email-herton.krzesinski@canonical.com>
Date:	Thu, 13 Dec 2012 11:59:13 -0200
From:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Mirko Lindner <mlindner@...vell.com>,
	"David S. Miller" <davem@...emloft.net>,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 188/241] sky2: Fix for interrupt handler

3.5.7.2 -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>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
---
 drivers/net/ethernet/marvell/sky2.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 28a5445..05c2cac 100644
--- 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, void *dev_id)
 
 	/* 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]);
 
-- 
1.7.9.5

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