diff --git a/openwrt/target/linux/brcm-2.4/patches/004-flash.patch b/openwrt/target/linux/brcm-2.4/patches/004-flash.patch
index 14ba3b15f4..de2d5b170f 100644
--- a/openwrt/target/linux/brcm-2.4/patches/004-flash.patch
+++ b/openwrt/target/linux/brcm-2.4/patches/004-flash.patch
@@ -334,7 +334,7 @@ diff -urN linux.old/drivers/mtd/devices/sflash.c linux.dev/drivers/mtd/devices/s
 diff -urN linux.old/drivers/mtd/maps/bcm947xx-flash.c linux.dev/drivers/mtd/maps/bcm947xx-flash.c
 --- linux.old/drivers/mtd/maps/bcm947xx-flash.c	1970-01-01 01:00:00.000000000 +0100
 +++ linux.dev/drivers/mtd/maps/bcm947xx-flash.c	2006-06-23 18:08:46.000000000 +0200
-@@ -0,0 +1,547 @@
+@@ -0,0 +1,548 @@
 +/*
 + *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
 + *  Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
@@ -720,7 +720,8 @@ diff -urN linux.old/drivers/mtd/maps/bcm947xx-flash.c linux.dev/drivers/mtd/maps
 +{
 +	int cfe_size;
 +
-+	cfe_size = find_cfe_size(mtd,size);
++	if ((cfe_size = find_cfe_size(mtd,size)) < 0)
++		return NULL;
 +
 +	/* boot loader */
 +	bcm947xx_parts[0].offset = 0;
diff --git a/openwrt/target/linux/brcm-2.6/patches/002-flash-map.patch b/openwrt/target/linux/brcm-2.6/patches/002-flash-map.patch
index a8ed9092c0..9d568930d2 100644
--- a/openwrt/target/linux/brcm-2.6/patches/002-flash-map.patch
+++ b/openwrt/target/linux/brcm-2.6/patches/002-flash-map.patch
@@ -1,7 +1,7 @@
 diff -urN linux.old/drivers/mtd/maps/bcm47xx-flash.c linux.dev/drivers/mtd/maps/bcm47xx-flash.c
 --- linux.old/drivers/mtd/maps/bcm47xx-flash.c	1970-01-01 01:00:00.000000000 +0100
 +++ linux.dev/drivers/mtd/maps/bcm47xx-flash.c	2006-06-23 19:54:06.000000000 +0200
-@@ -0,0 +1,451 @@
+@@ -0,0 +1,452 @@
 +/*
 + *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
 + *  Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
@@ -326,7 +326,8 @@ diff -urN linux.old/drivers/mtd/maps/bcm47xx-flash.c linux.dev/drivers/mtd/maps/
 +{
 +	int cfe_size;
 +
-+	cfe_size = find_cfe_size(mtd,size);
++	if ((cfe_size = find_cfe_size(mtd,size)) < 0)
++		return NULL;
 +
 +	/* boot loader */
 +	bcm947xx_parts[0].offset = 0;