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);