[OE-core] [PATCH 3/3] kernel-yocto: fix branch validation for AUTOREV, non machine_meta kernels

[Bruce Ashfield]

The simplication of do_validate_branches missed a case where a custom
kernel can supply SRCREV="${AUTOREV}", and not use SRCREV_machine at all.

In this case, we will incorrectly try and test the tree for a non-existent
commit, and break the build.

By simplying the condition of the check to look for an empty SRCREV_machine,
we can skip manipulating the tree and testing for a SRCREV.

Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
---
 meta/classes/kernel-yocto.bbclass | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 7718f9ab1b58..e672a0e3a5aa 100644
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -288,12 +288,14 @@ do_validate_branches() {
 	# check and we can exit early
 	if [ "${machine_srcrev}" = "AUTOINC" ]; then
 		bbnote "SRCREV validation is not required for AUTOREV"
-	elif [ "${machine_srcrev}" = "" ] && [ "${SRCREV}" != "AUTOINC" ]; then
-		# SRCREV_machine_<MACHINE> was not set. This means that a custom recipe
-		# that doesn't use the SRCREV_FORMAT "machine_meta" is being built. In
-		# this case, we need to reset to the give SRCREV before heading to patching
-		bbnote "custom recipe is being built, forcing SRCREV to ${SRCREV}"
-		force_srcrev="${SRCREV}"
+	elif [ "${machine_srcrev}" = "" ]; then
+		if [ "${SRCREV}" != "AUTOINC" ]; then
+		       # SRCREV_machine_<MACHINE> was not set. This means that a custom recipe
+		       # that doesn't use the SRCREV_FORMAT "machine_meta" is being built. In
+		       # this case, we need to reset to the give SRCREV before heading to patching
+		       bbnote "custom recipe is being built, forcing SRCREV to ${SRCREV}"
+		       force_srcrev="${SRCREV}"
+		fi
 	else
 		git cat-file -t ${machine_srcrev} > /dev/null
 		if [ $? -ne 0 ]; then
-- 
1.8.1.2