OMAP2/3: IRQ: ensure valid base address
Kevin Hilman [Fri, 29 Jan 2010 22:20:06 +0000 (14:20 -0800)]
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>

arch/arm/mach-omap2/irq.c

index 2705402..26aeef5 100644 (file)
@@ -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) {