From 7a7a480dfe56f7d41b8fe5dbef1a3bad0daf1e9b Mon Sep 17 00:00:00 2001
From: Lou Berger <lberger@labn.net>
Date: Wed, 14 Mar 2018 09:43:16 -0400
Subject: [PATCH 1/2] tools: checkpatch.sh - use run specific /tmp directories,
 remove them when done

Signed-off-by: Lou Berger <lberger@labn.net>
---
 tools/checkpatch.sh | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/tools/checkpatch.sh b/tools/checkpatch.sh
index e6110f0c7a..e1fb529d35 100755
--- a/tools/checkpatch.sh
+++ b/tools/checkpatch.sh
@@ -8,6 +8,8 @@ ignore="ldpd\|babeld"
 cwd=${PWD##*/}
 dirty=0
 stat=0
+tmp1=/tmp/f1-$$
+tmp2=/tmp/f2-$$
 
 if [[ -z "$1" || -z "$2" ]]; then
   echo "$usage"
@@ -15,7 +17,7 @@ if [[ -z "$1" || -z "$2" ]]; then
 fi
 
 # remove temp directories
-rm -rf /tmp/f1 /tmp/f2
+rm -rf ${tmp1} ${tmp2}
 
 # save working tree
 if git -C $tree status --porcelain | egrep --silent '^(\?\?|.[DM])'; then
@@ -38,7 +40,7 @@ fi
 
 git -C $tree reset --hard
 git -C $tree apply < $patch
-mkdir -p /tmp/f1 /tmp/f2
+mkdir -p ${tmp1} ${tmp2}
 mod=$(git -C $tree ls-files -m | grep ".*\.[ch]" | grep -v $ignore)
 mod+=" $(git -C $tree ls-files --others --exclude-standard | grep '.*\.[ch]' | grep -v $ignore)"
 echo $mod
@@ -47,32 +49,32 @@ if [ -z "$mod" ]; then
 else
   echo "Copying source to temp directory..."
   for file in $mod; do
-    echo "$tree/$file --> /tmp/f1/$file"
-    cp $tree/$file /tmp/f1/
+    echo "$tree/$file --> ${tmp1}/$file"
+    cp $tree/$file ${tmp1}/
   done
   git -C $tree reset --hard
   git -C $tree clean -fd
   for file in $mod; do
     if [ -f $tree/$file ]; then
-      echo "$tree/$file --> /tmp/f2/$file"
-      cp $tree/$file /tmp/f2/
+      echo "$tree/$file --> ${tmp2}/$file"
+      cp $tree/$file ${tmp2}/
     fi
   done
   echo "Running style checks..."
-  for file in /tmp/f1/*; do
+  for file in ${tmp1}/*; do
     echo "$checkpatch $file > $file _cp"
     $checkpatch $file > "$file"_cp 2> /dev/null
   done
-  for file in /tmp/f2/*; do
+  for file in ${tmp2}/*; do
     echo "$checkpatch $file > $file _cp"
     $checkpatch $file > "$file"_cp 2> /dev/null
   done
   echo "Done."
-  for file in /tmp/f1/*_cp; do
-    if [ -a /tmp/f2/$(basename $file) ]; then
-      result=$(diff $file /tmp/f2/$(basename $file) | grep -A3 "ERROR\|WARNING" | grep -A2 -B2 '/tmp/f1')
+  for file in ${tmp1}/*_cp; do
+    if [ -a ${tmp2}/$(basename $file) ]; then
+      result=$(diff $file ${tmp2}/$(basename $file) | grep -A3 "ERROR\|WARNING" | grep -A2 -B2 "${tmp1}")
     else
-      result=$(cat $file | grep -A3 "ERROR\|WARNING" | grep -A2 -B2 '/tmp/f1')
+      result=$(cat $file | grep -A3 "ERROR\|WARNING" | grep -A2 -B2 "${tmp1}")
     fi
     if [ "$?" -eq "0" ]; then
       echo "Report for $(basename $file _cp)" 1>&2
@@ -98,4 +100,7 @@ if [ $dirty -eq 1 ]; then
   git -C $tree config --unset gc.auto;
 fi
 
+# remove temp directories
+rm -rf ${tmp1} ${tmp2}
+
 exit $stat

From f1beb87ed1059cae9aa4e94f61a68f05c9305381 Mon Sep 17 00:00:00 2001
From: Lou Berger <lberger@labn.net>
Date: Wed, 14 Mar 2018 10:36:27 -0400
Subject: [PATCH 2/2] tools: checkpatch.sh - Add warning that // style comments
 don't match        recommended (kernel) comment style

Signed-off-by: Lou Berger <lberger@labn.net>
---
 tools/checkpatch.pl | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/tools/checkpatch.pl b/tools/checkpatch.pl
index a952de8947..a85d811c96 100755
--- a/tools/checkpatch.pl
+++ b/tools/checkpatch.pl
@@ -1249,11 +1249,6 @@ sub sanitise_line {
 		$res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
 	}
 
-	if ($allow_c99_comments && $res =~ m@(//.*$)@) {
-		my $match = $1;
-		$res =~ s/\Q$match\E/"$;" x length($match)/e;
-	}
-
 	return $res;
 }
 
@@ -3612,14 +3607,19 @@ sub process {
 
 # no C99 // comments
 		if ($line =~ m{//}) {
-			if (ERROR("C99_COMMENTS",
-				  "do not use C99 // comments\n" . $herecurr) &&
-			    $fix) {
-				my $line = $fixed[$fixlinenr];
-				if ($line =~ /\/\/(.*)$/) {
-					my $comment = trim($1);
-					$fixed[$fixlinenr] =~ s@\/\/(.*)$@/\* $comment \*/@;
+			if (!$allow_c99_comments) {
+				if(ERROR("C99_COMMENTS",
+					 "do not use C99 // comments\n" . $herecurr) &&
+				   $fix) {
+					my $line = $fixed[$fixlinenr];
+					if ($line =~ /\/\/(.*)$/) {
+						my $comment = trim($1);
+						$fixed[$fixlinenr] =~ s@\/\/(.*)$@/\* $comment \*/@;
+					}
 				}
+			} else {
+				WARN("C99_COMMENTS",
+				     "C99 // comments do not match recommendation\n" . $herecurr);
 			}
 		}
 		# Remove C99 comments.