From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 16 Aug 2010 19:26:51 +0000 (+0100)
Subject: mfd: Ignore non-GPIO IRQs when setting wm831x IRQ types
X-Git-Tag: v2.6.36-rc7~44^2~1
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c9d66d3515bbb0ad8062721487de7ade02d2b936;p=~emulex%2Finfiniband.git

mfd: Ignore non-GPIO IRQs when setting wm831x IRQ types

The driver was originally tested with an additional patch which
made this unneeded but that patch had issuges and got lost on the
way to mainline, causing problems when the errors are reported.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Cc: stable@kernel.org
---

diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index 7dabe4dbd37..294183b6260 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -394,8 +394,13 @@ static int wm831x_irq_set_type(unsigned int irq, unsigned int type)
 
 	irq = irq - wm831x->irq_base;
 
-	if (irq < WM831X_IRQ_GPIO_1 || irq > WM831X_IRQ_GPIO_11)
-		return -EINVAL;
+	if (irq < WM831X_IRQ_GPIO_1 || irq > WM831X_IRQ_GPIO_11) {
+		/* Ignore internal-only IRQs */
+		if (irq >= 0 && irq < WM831X_NUM_IRQS)
+			return 0;
+		else
+			return -EINVAL;
+	}
 
 	switch (type) {
 	case IRQ_TYPE_EDGE_BOTH: