1 files changed, 14 insertions, 6 deletions

diff --git a/arch/arm/mach-davinci/gpio.c b/arch/arm/mach-davinci/gpio.c
index 1aba41c6351e..34ba4ceda347 100644
--- a/arch/arm/mach-davinci/gpio.c
+++ b/arch/arm/mach-davinci/gpio.c
@@ -187,10 +187,15 @@ static void gpio_irq_enable(unsigned irq)
 {
         struct gpio_controller *__iomem g = get_irq_chip_data(irq);
         u32 mask = __gpio_mask(irq_to_gpio(irq));
+        unsigned status = irq_desc[irq].status;
 
-        if (irq_desc[irq].status & IRQ_TYPE_EDGE_FALLING)
+        status &= IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
+        if (!status)
+                status = IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING;
+
+        if (status & IRQ_TYPE_EDGE_FALLING)
                 __raw_writel(mask, &g->set_falling);
-        if (irq_desc[irq].status & IRQ_TYPE_EDGE_RISING)
+        if (status & IRQ_TYPE_EDGE_RISING)
                 __raw_writel(mask, &g->set_rising);
 }
 
@@ -205,10 +210,13 @@ static int gpio_irq_type(unsigned irq, unsigned trigger)
         irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
         irq_desc[irq].status |= trigger;
 
-        __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_FALLING)
-                     ? &g->set_falling : &g->clr_falling);
-        __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_RISING)
-                     ? &g->set_rising : &g->clr_rising);
+        /* don't enable the IRQ if it's currently disabled */
+        if (irq_desc[irq].depth == 0) {
+                __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_FALLING)
+                             ? &g->set_falling : &g->clr_falling);
+                __raw_writel(mask, (trigger & IRQ_TYPE_EDGE_RISING)
+                             ? &g->set_rising : &g->clr_rising);
+        }
         return 0;
 }