[ARM] pxa: use chip->ack() instead of accessing GEDR directly

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 851ee0fc32e2..a8674aacd347 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -162,7 +162,7 @@ static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
         do {
-                GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
+                desc->chip->ack(irq);   /* clear useless edge notification */
                 if (likely(pending)) {
                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
                         generic_handle_irq(irq);