diff options
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index c05c653d1674..e0e2fa725269 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -1318,6 +1318,10 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) if (bank->method == METHOD_GPIO_44XX) isr_reg = bank->base + OMAP4_GPIO_IRQSTATUS0; #endif + + if (WARN_ON(!isr_reg)) + goto exit; + while(1) { u32 isr_saved, level_mask = 0; u32 enabled; @@ -1377,6 +1381,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) configured, we must unmask the bank interrupt only after handler(s) are executed in order to avoid spurious bank interrupt */ +exit: if (!unmasked) desc->chip->unmask(irq); |