linux-kernel - [PATCH] checkpatch: Improve the embedded function name test for patch contexts

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Message-Id: <6c675a31c74fbfad4fc45b9f462303d60ca2a283.1493486091.git.joe@perches.com>
Date:   Sat, 29 Apr 2017 10:15:30 -0700
From:   Joe Perches <joe@...ches.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Whitcroft <apw@...onical.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] checkpatch: Improve the embedded function name test for patch contexts

The current test works only for a single patch context as it is
done in the foreach ($rawlines) loop that precedes the loop where
the actual $context_function variable is used.
'
Move the set of $context_function into the foreach (@lines) loop
where it is useful for each patch context.

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/checkpatch.pl | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5270f7948493..c8573aece06c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2195,8 +2195,7 @@ sub process {
 			}
 			#next;
 		}
-		if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
-			my $context = $4;
+		if ($rawline =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
 			$realline=$1-1;
 			if (defined $2) {
 				$realcnt=$3+1;
@@ -2205,12 +2204,6 @@ sub process {
 			}
 			$in_comment = 0;
 
-			if ($context =~ /\b(\w+)\s*\(/) {
-				$context_function = $1;
-			} else {
-				undef $context_function;
-			}
-
 			# Guestimate if this is a continuing comment.  Run
 			# the context looking for a comment "edge".  If this
 			# edge is a close comment then we must be in a comment
@@ -2281,7 +2274,8 @@ sub process {
 
 #extract the line range in the file after the patch is applied
 		if (!$in_commit_log &&
-		    $line =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
+		    $line =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
+			my $context = $4;
 			$is_patch = 1;
 			$first_line = $linenr + 1;
 			$realline=$1-1;
@@ -2297,6 +2291,11 @@ sub process {
 			%suppress_whiletrailers = ();
 			%suppress_export = ();
 			$suppress_statement = 0;
+			if ($context =~ /\b(\w+)\s*\(/) {
+				$context_function = $1;
+			} else {
+				undef $context_function;
+			}
 			next;
 
 # track the line number as we move through the hunk, note that
-- 
2.10.0.rc2.1.g053435c