kernel-fitimage: fix handling of empty default dtb

Fix error in run.do_assemble_fitimage_initramfs.2779256:
             line 238: [: =: unary operator expected
if FIT_CONF_DEFAULT_DTB is empty.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes-recipe/kernel-fitimage.bbclass b/meta/classes-recipe/kernel-fitimage.bbclass
index 4b74ddc20155353683dfbbdd60a7087b59f940fe..6e6898e5f6fb8b3efc3a9f68fb76241ccfd959eb 100644 (file)
--- a/meta/classes-recipe/kernel-fitimage.bbclass
+++ b/meta/classes-recipe/kernel-fitimage.bbclass
@@ -611,7 +611,7 @@ fitimage_assemble() {
                        fi
 
                        # Set the default dtb image if it exists in the devicetree.
-                       if [ ${FIT_CONF_DEFAULT_DTB} = $DTB ];then
+                       if [ "${FIT_CONF_DEFAULT_DTB}" = "$DTB" ];then
                                default_dtb_image=$(echo "$DTB" | tr '/' '_')
                        fi