linux-kernel - [PATCH] checkpatch: Extend CamelCase types and ignore existing CamelCase uses in a patch

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Date:	Tue, 03 Sep 2013 10:25:21 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Wang Shilong <wangshilong1991@...il.com>,
	kumargauravgupta3@...il.com, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] checkpatch: Extend CamelCase types and ignore existing
 CamelCase uses in a patch

Extend the CamelCase words found to include structure members.

In https://lkml.org/lkml/2013/9/3/318 Sarah Sharp (mostly) wrote: 

"In general, if checkpatch.pl complains about a variable a patch
introduces that's CamelCase, you should pay attention to it.
Otherwise, [] ignore it."

So, if checking a patch, scan the original patched file if it's
available and add any preexisting CamelCase types so reuses do
not generate CamelCase messages.

That also means Andrew's not so cruelly spurned anymore.
https://lkml.org/lkml/2013/2/22/426

Signed-off-by: Joe Perches <joe@...ches.com>
Suggested-by: Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Suggested-by: Andrew Morton <akpm@...ux-foundation.org>
---
 scripts/checkpatch.pl | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9ba4fc4..b98a996 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -424,7 +424,7 @@ sub seed_camelcase_file {
 		if ($line =~ /^[ \t]*(?:#[ \t]*define|typedef\s+$Type)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)/) {
 			$camelcase{$1} = 1;
 		}
-	        elsif ($line =~ /^\s*$Declare\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*\(/) {
+	        elsif ($line =~ /^\s*$Declare\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*[\(\[,;]/) {
 			$camelcase{$1} = 1;
 		}
 	}
@@ -1593,6 +1593,8 @@ sub process {
 	my @setup_docs = ();
 	my $setup_docs = 0;
 
+	my $camelcase_file_seeded = 0;
+
 	sanitise_line_reset();
 	my $line;
 	foreach my $rawline (@rawlines) {
@@ -3377,7 +3379,13 @@ sub process {
 				while ($var =~ m{($Ident)}g) {
 					my $word = $1;
 					next if ($word !~ /[A-Z][a-z]|[a-z][A-Z]/);
-					seed_camelcase_includes() if ($check);
+					if ($check) {
+						seed_camelcase_includes();
+						if (!$file && !$camelcase_file_seeded) {
+							seed_camelcase_file($realfile);
+							$camelcase_file_seeded = 1;
+						}
+					}
 					if (!defined $camelcase{$word}) {
 						$camelcase{$word} = 1;
 						CHK("CAMELCASE",


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