[PATCH 3/4] template: Remove KERNEL_NAME from default TEMPLATE_VARS

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

KERNEL_NAME is a globally defined variable but is only used for
templating by the module recipe include. As the templating step is
inherited by all packages, changing the KERNEL_NAME can cause unneeded
recipe rebuilds. Therefore, make this template variable specific.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 meta/classes/template.bbclass               | 2 +-
 meta/recipes-kernel/linux-module/module.inc | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/template.bbclass b/meta/classes/template.bbclass
index 3eb9114..f3b5f80 100644
--- a/meta/classes/template.bbclass
+++ b/meta/classes/template.bbclass
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: MIT
 
 TEMPLATE_FILES ?= ""
-TEMPLATE_VARS ?= "PN PV DESCRIPTION HOMEPAGE MAINTAINER KERNEL_NAME DISTRO_ARCH"
+TEMPLATE_VARS ?= "PN PV DESCRIPTION HOMEPAGE MAINTAINER DISTRO_ARCH"
 
 do_transform_template[vardeps] = "TEMPLATE_FILES ${TEMPLATE_VARS}"
 do_transform_template[stamp-extra-info] = "${DISTRO}-${DISTRO_ARCH}"
diff --git a/meta/recipes-kernel/linux-module/module.inc b/meta/recipes-kernel/linux-module/module.inc
index 44edd58..6506e39 100644
--- a/meta/recipes-kernel/linux-module/module.inc
+++ b/meta/recipes-kernel/linux-module/module.inc
@@ -21,6 +21,7 @@ inherit dpkg
 
 TEMPLATE_FILES = "debian/control.tmpl \
                   debian/changelog.tmpl"
+TEMPLATE_VARS += "KERNEL_NAME"
 
 do_prepare_build() {
     cp -r ${WORKDIR}/debian ${S}/
-- 
2.16.4