diff --git a/arch/arm/mach-spear3xx/spear310.c b/arch/arm/mach-spear3xx/spear310.c
index 3a3d548..5c0a67b 100644
--- a/arch/arm/mach-spear3xx/spear310.c
+++ b/arch/arm/mach-spear3xx/spear310.c
@@ -267,7 +267,7 @@
 	spear3xx_init();
 
 	/* shared irq registration */
-	base = ioremap(SPEAR310_SOC_CONFIG_BASE, SPEAR310_SOC_CONFIG_SIZE);
+	base = ioremap(SPEAR310_SOC_CONFIG_BASE, SZ_4K);
 	if (base) {
 		/* shirq 1 */
 		shirq_ras1.regs.base = base;