checkpatches: ability to pass custom options

Add the ability to pass custom options to checkpatch script. An example
of use is to change the output format so it can run in emacs compilation
mode:

  DPDK_CHECKPATCH_PATH=/path/to/linux/scripts/checkpatch.pl \
    DPDK_CHECKPATCH_OPTIONS='--emacs --showfile --no-color' \
    /path/to/dpdk.org/devtools/checkpatches.sh

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 6a01b39c896f2738ba05c1ff061afba310acc7e0..bd0a93178f13a9175de476f554b79d4566e804bf 100755 (executable)
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -6,6 +6,7 @@
 # - DPDK_CHECKPATCH_PATH
 # - DPDK_CHECKPATCH_CODESPELL
 # - DPDK_CHECKPATCH_LINE_LENGTH
+# - DPDK_CHECKPATCH_OPTIONS
 . $(dirname $(readlink -e $0))/load-devel-config
 
 VALIDATE_NEW_API=$(dirname $(readlink -e $0))/check-symbol-change.sh
@@ -33,6 +34,7 @@ PREFER_KERNEL_TYPES,BIT_MACRO,CONST_STRUCT,\
 SPLIT_STRING,LONG_LINE_STRING,\
 LINE_SPACING,PARENTHESIS_ALIGNMENT,NETWORKING_BLOCK_COMMENT_STYLE,\
 NEW_TYPEDEFS,COMPARISON_TO_NULL"
+options="$options $DPDK_CHECKPATCH_OPTIONS"
 
 clean_tmp_files() {
        if echo $tmpinput | grep -q '^checkpatches\.' ; then