uboot-sign.bbclass: silence warnings when UBOOT_DTB_BINARY is empty

When UBOOT_DTB_BINARY is set to "", the keys for signed booting are
expected to be already present in U-Boot's DTB, so don't issue warnings
for this.

(From OE-Core rev: 04656f5df326a72747fc5878ce201b636a2a419c)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/meta/classes/uboot-sign.bbclass b/meta/classes/uboot-sign.bbclass
index 03100b8a5f..9e3d1d6fc1 100644
--- a/meta/classes/uboot-sign.bbclass
+++ b/meta/classes/uboot-sign.bbclass
@@ -70,7 +70,7 @@ concat_dtb() {
                 elif [ -e "${DEPLOYDIR}/${UBOOT_NODTB_IMAGE}" -a -e "$deployed_uboot_dtb_binary" ]; then
                         cd ${DEPLOYDIR}
                         cat ${UBOOT_NODTB_IMAGE} $deployed_uboot_dtb_binary | tee ${B}/${UBOOT_BINARY} > ${UBOOT_IMAGE}
-                else
+                elif [ -n "${UBOOT_DTB_BINARY}" ]; then
                         bbwarn "Failure while adding public key to u-boot binary. Verified boot won't be available."
                 fi
         fi
@@ -86,7 +86,7 @@ do_install_append() {
                         # need both of them.
                         install ${B}/${UBOOT_DTB_BINARY} ${D}${datadir}/${UBOOT_DTB_IMAGE}
                         ln -sf ${UBOOT_DTB_IMAGE} ${D}${datadir}/${UBOOT_DTB_BINARY}
-                else
+                elif [ -n "${UBOOT_DTB_BINARY}" ]; then
                         bbwarn "${B}/${UBOOT_DTB_BINARY} not found"
                 fi
         fi