linux-kernel - [ 117/173] bcma: mips: fix clearing device IRQ

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Date:	Fri, 28 Dec 2012 20:05:27 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Rafał Miłecki <zajec5@...il.com>,
	Hauke Mehrtens <hauke@...ke-m.de>,
	"John W. Linville" <linville@...driver.com>
Subject: [ 117/173] bcma: mips: fix clearing device IRQ

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

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

From: Rafał Miłecki <zajec5@...il.com>

commit cbbc0138efe1dcd5426b8fc5d87741f5057aee72 upstream.

We were using wrong IRQ number so clearing wasn't working at all.
Depending on a platform this could result in a one device having two
interrupts assigned. On BCM4706 this resulted in all IRQs being broken.

Cc: Hauke Mehrtens <hauke@...ke-m.de>
Signed-off-by: Rafał Miłecki <zajec5@...il.com>
Acked-by: Hauke Mehrtens <hauke@...ke-m.de>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/bcma/driver_mips.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index c45ded8..792daad 100644
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -115,7 +115,7 @@ static void bcma_core_mips_set_irq(struct bcma_device *dev, unsigned int irq)
 			    bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) &
 			    ~(1 << irqflag));
 	else
-		bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq), 0);
+		bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(oldirq), 0);
 
 	/* assign the new one */
 	if (irq == 0) {


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