OpenWrt – Rev 1

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--- a/include/linux/bcm963xx_tag.h
+++ b/include/linux/bcm963xx_tag.h
@@ -92,8 +92,10 @@ struct bcm_tag {
        __u32 rootfs_crc;
        /* 224-227: CRC32 of kernel partition */
        __u32 kernel_crc;
-       /* 228-235: Unused at present */
-       char reserved1[8];
+       /* 228-231: Unused at present */
+       char reserved1[4];
+       /* 222-235: Openwrt: real rootfs length */
+       __u32 real_rootfs_length;
        /* 236-239: CRC32 of header excluding last 20 bytes */
        __u32 header_crc;
        /* 240-255: Unused at present */
--- a/drivers/mtd/parsers/parser_imagetag.c
+++ b/drivers/mtd/parsers/parser_imagetag.c
@@ -137,7 +137,8 @@ static int bcm963xx_parse_imagetag_parti
                } else {
                        /* OpenWrt layout */
                        rootfsaddr = kerneladdr + kernellen;
-                       rootfslen = spareaddr - rootfsaddr;
+                       rootfslen = buf->real_rootfs_length;
+                       spareaddr = rootfsaddr + rootfslen;
                }
        } else {
                goto out;