OMAP2/3: IRQ: ensure valid base address

Ensure valid base address during IRQ init.  Fixes compiler warning
about potential use of uninitialized variable.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 27054025da2b..26aeef560aa3 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -194,7 +194,7 @@ void __init omap_init_irq(void)
         int i;
 
         for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
-                unsigned long base;
+                unsigned long base = 0;
                 struct omap_irq_bank *bank = irq_banks + i;
 
                 if (cpu_is_omap24xx())
@@ -202,6 +202,8 @@ void __init omap_init_irq(void)
                 else if (cpu_is_omap34xx())
                         base = OMAP34XX_IC_BASE;
 
+                BUG_ON(!base);
+
                 /* Static mapping, never released */
                 bank->base_reg = ioremap(base, SZ_4K);
                 if (!bank->base_reg) {