diff --git a/arch/arm/mach-omap1/id.c b/arch/arm/mach-omap1/id.c
index bfabc065d331e3e0586020a22b7830d8345be318..52de382fc8047148f272dd57d7dd01354ec33801 100644
--- a/arch/arm/mach-omap1/id.c
+++ b/arch/arm/mach-omap1/id.c
@@ -65,7 +65,6 @@ static struct omap_id omap_ids[] __initdata = {
 
 unsigned int omap_rev(void)
 {
-	WARN_ON_ONCE(!omap_revision || omap_revision == -1);
 	return omap_revision;
 }
 EXPORT_SYMBOL(omap_rev);
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 75fb6c006e865b1501db71d64da883b5db2a7d42..d85c24918c177d176fd191aa1ebcfaff5ce90f74 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -46,7 +46,6 @@ u32 omap_features;
 
 unsigned int omap_rev(void)
 {
-	WARN_ON_ONCE(!omap_revision || omap_revision == -1);
 	return omap_revision;
 }
 EXPORT_SYMBOL(omap_rev);