[PATCHv4 1/4] kernel-devicetree.bbclass: Use lowercase names for shell variables

[Martin Jansa <martin.jansa@gmail.com>]

* just to make it more clear what is local shell variable and what is
  replaced by bitbake from the metadata and also to prevent the variable
  to be incorrectly expanded by bitbake if someone happens to define
  e.g. DTB_BASE_NAME

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/classes/kernel-devicetree.bbclass | 80 +++++++++++++-------------
 1 file changed, 40 insertions(+), 40 deletions(-)

diff --git a/meta/classes/kernel-devicetree.bbclass b/meta/classes/kernel-devicetree.bbclass
index 4f80cc62eb..10441475e8 100644
--- a/meta/classes/kernel-devicetree.bbclass
+++ b/meta/classes/kernel-devicetree.bbclass
@@ -10,21 +10,21 @@ FILES_${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-
 KERNEL_DEVICETREE_BUNDLE ?= "0"
 
 normalize_dtb () {
-	DTB="$1"
-	if echo ${DTB} | grep -q '/dts/'; then
-		bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
-		DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
+	dtb="$1"
+	if echo $dtb | grep -q '/dts/'; then
+		bbwarn "$dtb contains the full path to the the dts file, but only the dtb name should be used."
+		dtb=`basename $dtb | sed 's,\.dts$,.dtb,g'`
 	fi
-	echo "${DTB}"
+	echo "$dtb"
 }
 
 get_real_dtb_path_in_kernel () {
-	DTB="$1"
-	DTB_PATH="${B}/arch/${ARCH}/boot/dts/${DTB}"
-	if [ ! -e "${DTB_PATH}" ]; then
-		DTB_PATH="${B}/arch/${ARCH}/boot/${DTB}"
+	dtb="$1"
+	dtb_path="${B}/arch/${ARCH}/boot/dts/$dtb"
+	if [ ! -e "$dtb_path" ]; then
+		dtb_path="${B}/arch/${ARCH}/boot/$dtb"
 	fi
-	echo "${DTB_PATH}"
+	echo "$dtb_path"
 }
 
 do_configure_append() {
@@ -50,61 +50,61 @@ do_configure_append() {
 }
 
 do_compile_append() {
-	for DTB in ${KERNEL_DEVICETREE}; do
-		DTB=`normalize_dtb "${DTB}"`
-		oe_runmake ${DTB}
+	for dtbf in ${KERNEL_DEVICETREE}; do
+		dtb=`normalize_dtb "$dtbf"`
+		oe_runmake $dtb
 	done
 }
 
 do_install_append() {
-	for DTB in ${KERNEL_DEVICETREE}; do
-		DTB=`normalize_dtb "${DTB}"`
-		DTB_EXT=${DTB##*.}
-		DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
-		DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
-		install -m 0644 ${DTB_PATH} ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT}
+	for dtbf in ${KERNEL_DEVICETREE}; do
+		dtb=`normalize_dtb "$dtbf"`
+		dtb_ext=${dtb##*.}
+		dtb_path=`get_real_dtb_path_in_kernel "$dtb"`
+		dtb_base_name=`basename $dtb ."$dtb_ext"`
+		install -m 0644 $dtb_path ${D}/${KERNEL_IMAGEDEST}/$dtb_base_name.$dtb_ext
 		for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
 			symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
-			DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
-			ln -sf ${DTB_BASE_NAME}.${DTB_EXT} ${D}/${KERNEL_IMAGEDEST}/devicetree-${DTB_SYMLINK_NAME}.${DTB_EXT}
+			dtb_symlink_name=`echo ${symlink_name} | sed "s/${MACHINE}/$dtb_base_name/g"`
+			ln -sf $dtb_base_name.$dtb_ext ${D}/${KERNEL_IMAGEDEST}/devicetree-$dtb_symlink_name.$dtb_ext
 
 			if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
 				cat ${D}/${KERNEL_IMAGEDEST}/$type \
-					${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT} \
-					> ${D}/${KERNEL_IMAGEDEST}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
+					${D}/${KERNEL_IMAGEDEST}/$dtb_base_name.$dtb_ext \
+					> ${D}/${KERNEL_IMAGEDEST}/$type-$dtb_base_name.$dtb_ext.bin
 			fi
 		done
 	done
 }
 
 do_deploy_append() {
-	for DTB in ${KERNEL_DEVICETREE}; do
-		DTB=`normalize_dtb "${DTB}"`
-		DTB_EXT=${DTB##*.}
-		DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
+	for dtbf in ${KERNEL_DEVICETREE}; do
+		dtb=`normalize_dtb "$dtbf"`
+		dtb_ext=${dtb##*.}
+		dtb_base_name=`basename $dtb ."$dtb_ext"`
 		for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
 			base_name=${type}"-"${KERNEL_IMAGE_BASE_NAME}
 			symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
-			DTB_NAME=`echo ${base_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
-			DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
-			DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
+			dtb_name=`echo ${base_name} | sed "s/${MACHINE}/$dtb_base_name/g"`
+			dtb_symlink_name=`echo ${symlink_name} | sed "s/${MACHINE}/$dtb_base_name/g"`
+			dtb_path=`get_real_dtb_path_in_kernel "$dtb"`
 			install -d ${DEPLOYDIR}
-			install -m 0644 ${DTB_PATH} ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}
-			ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_SYMLINK_NAME}.${DTB_EXT}
-			ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_BASE_NAME}.${DTB_EXT}
+			install -m 0644 $dtb_path ${DEPLOYDIR}/$dtb_name.$dtb_ext
+			ln -sf $dtb_name.$dtb_ext ${DEPLOYDIR}/$dtb_symlink_name.$dtb_ext
+			ln -sf $dtb_name.$dtb_ext ${DEPLOYDIR}/$dtb_base_name.$dtb_ext
 
 			if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
 				cat ${DEPLOYDIR}/$type \
-					${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
-					> ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}.bin
-				ln -sf ${DTB_NAME}.${DTB_EXT}.bin ${DEPLOYDIR}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
+					${DEPLOYDIR}/$dtb_name.$dtb_ext \
+					> ${DEPLOYDIR}/$dtb_name.$dtb_ext.bin
+				ln -sf $dtb_name.$dtb_ext.bin ${DEPLOYDIR}/$type-$dtb_base_name.$dtb_ext.bin
 
 				if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then
 					cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \
-						${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
-						> ${DEPLOYDIR}/${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin
-					ln -sf ${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin \
-					       ${DEPLOYDIR}/${type}-initramfs-${DTB_BASE_NAME}.${DTB_EXT}-${MACHINE}.bin
+						${DEPLOYDIR}/$dtb_name.$dtb_ext \
+						> ${DEPLOYDIR}/${type}-${INITRAMFS_BASE_NAME}-$dtb_base_name.$dtb_ext.bin
+					ln -sf ${type}-${INITRAMFS_BASE_NAME}-$dtb_base_name.$dtb_ext.bin \
+					       ${DEPLOYDIR}/${type}-initramfs-$dtb_base_name.$dtb_ext-${MACHINE}.bin
 				fi
 			fi
 		done
-- 
2.17.1