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 7dabe4dbd3732e1d75c396b9b1e01bdeafafa57c..294183b6260b1facff3d26764eb3cea8c6d4b011 100644 (file)
--- 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: