image_types: Fix ubi images creation

Without that commit ubinize.cfg lack a volume name value,
  and the related ubinize.cfg line looks like that:
    vol_name=
  which result in a broken ubi image,which after beeing flashed produce
  the following error:
    UBI error: vtbl_check: volume table check failed: record 0, error 11
  wich result in a kernel panic because the rootfs can't be mounted.

[RP: Moved from bitbake.conf to the .bbclass file]
(From OE-Core rev: 534dcaba0517ebfb6e48b6b436960a74e642a556)

Signed-off-by: Denis Carikli <denis@eukrea.com>
Acked-by: Anders Darander <anders@chargestorm.se>
Acked-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index 1abd53334f..c24b326451 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -99,6 +99,8 @@ IMAGE_CMD_cpio.gz = "cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | gzip -c -
 IMAGE_CMD_cpio.xz = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.xz) ${EXTRA_IMAGECMD}"
 IMAGE_CMD_cpio.lzma = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz --format=lzma -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.lzma) ${EXTRA_IMAGECMD}"
 
+UBI_VOLNAME ?= "${MACHINE}-rootfs"
+
 IMAGE_CMD_ubi () {
         echo \[ubifs\] > ubinize.cfg 
         echo mode=ubi >> ubinize.cfg