[PATCH] patchtest.sh: optionally specify start branch

[Trevor Woerner <twoerner@gmail.com>]

Allow the user to optionally specify a starting branch, otherwise assume
master.

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
---
 scripts/contrib/patchtest.sh | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/scripts/contrib/patchtest.sh b/scripts/contrib/patchtest.sh
index 7fe566666e..2a4aea1d28 100755
--- a/scripts/contrib/patchtest.sh
+++ b/scripts/contrib/patchtest.sh
@@ -2,7 +2,7 @@
 # ex:ts=4:sw=4:sts=4:et
 # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 #
-# patchtest: Run patchtest on commits starting at master
+# patchtest: Run patchtest on commits starting at specified branch, or master
 #
 # Copyright (c) 2017, Intel Corporation.
 # All rights reserved.
@@ -29,8 +29,9 @@ pokydir=''
 usage() {
 CMD=$(basename $0)
 cat <<EOM
-Usage: $CMD [-h] [-p pokydir]
-  -p pokydir  Defaults to current directory
+Usage: $CMD [-h] [-p pokydir] [-b startbranch]
+  -p pokydir        Defaults to current directory
+  -b startbranch    Defaults to master
 EOM
 >&2
     exit 1
@@ -46,11 +47,14 @@ function clone() {
     fi
 }
 
-while getopts ":p:h" opt; do
+while getopts ":p:hb:" opt; do
     case $opt in
 	p)
 	    pokydir=$OPTARG
 	    ;;
+	b)
+	    branch=$OPTARG
+	    ;;
 	h)
 	    usage
 	    ;;
@@ -73,6 +77,11 @@ if [ -z "$pokydir" ]; then
     pokydir="$CDIR"
 fi
 
+# default branch to master if the user did not specify otherwise
+if [ -z "$branch" ]; then
+    branch="master"
+fi
+
 PTENV="$PWD/patchtest"
 PT="$PTENV/patchtest"
 PTOE="$PTENV/patchtest-oe"
@@ -99,7 +108,7 @@ pip install -r $PTOE/requirements.txt --quiet
 PATH="$PT:$PT/scripts:$PATH"
 
 # loop through parent to HEAD and execute patchtest on each commit
-for commit in $(git rev-list master..HEAD --reverse)
+for commit in $(git rev-list ${branch}..HEAD --reverse)
 do
     shortlog="$(git log "$commit^1..$commit" --pretty='%h: %aN: %cd: %s')"
     log="$(git format-patch "$commit^1..$commit" --stdout | patchtest - -r $pokydir -s $PTOE/tests --base-commit $commit^1 --json 2>/dev/null | create-summary --fail --only-results)"
-- 
2.17.0.582.gccdcbd54c