[PATCH] mfd: Fix off by one in WM831x IRQ code

From: Mark Brown
Date: Tue Jun 21 2011 - 19:24:58 EST

From: Dimitris Papastamos <dp@xxxxxxxxxxxxxxxxxxxxxxxxxxx>

The GPIO IRQs aren't the first IRQs defined, we need to subtract the base
for the GPIOs as well to use them for array indexes.

Signed-off-by: Dimitris Papastamos <dp@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
drivers/mfd/wm831x-irq.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index 1808deb..6c3408c 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -408,6 +408,11 @@ static int wm831x_irq_set_type(struct irq_data *data, unsigned int type)
return -EINVAL;

+ /* Rebase the IRQ into the GPIO range so we've got a sensible array
+ * index.
+ */
+ irq -= WM831X_IRQ_GPIO_1;
/* We set the high bit to flag that we need an update; don't
* do the update here as we can be called with the bus lock
* held.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/