kernel-fitimage: fix external dtb check

If EXTERNAL_KERNEL_DEVICETREE and dtb_image_sect are empty variables
dtb_path ends up as "/" which is available on most Unix systems but
probably not the dtb_path which is needed here. Checking for a file
makes more sense and also solves the issue with the "/".

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 ce52297aec3d67ace6fed38094cc53a837ef13ef..67c98adb23217626d5fed09c607a03500a1ffd08 100644 (file)
--- a/meta/classes-recipe/kernel-fitimage.bbclass
+++ b/meta/classes-recipe/kernel-fitimage.bbclass
@@ -429,7 +429,7 @@ fitimage_emit_section_config() {
        fi
 
        dtb_path="${EXTERNAL_KERNEL_DEVICETREE}/${dtb_image_sect}"
-       if [ -e "$dtb_path" ]; then
+       if [ -f "$dtb_path" ] || [ -L "$dtb_path" ]; then
                compat=$(fdtget -t s "$dtb_path" / compatible | sed 's/ /", "/g')
                if [ -n "$compat" ]; then
                        compatible_line="compatible = \"$compat\";"