linux-kernel - [PATCH 3/3] checkpatch: Fix jiffies comparison and others

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Message-Id: <298d684f1fe77a3a7c15e56e0c0399b23ea711db.1392587681.git.joe@perches.com>
Date:	Sun, 16 Feb 2014 13:57:28 -0800
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Andy Whitcroft <apw@...onical.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] checkpatch: Fix jiffies comparison and others

checkpatch could not distinguish between a variable in a struct
named jiffies and the normal jiffies.

	foo->jiffies

would emit a "Comparing jiffies" arning.

Update the $Compare variable to do a negative look-behind for "-"
when finding a ">" so that a pointer dereference like -> isn't
a comparison.

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e7c50977..646295c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -296,7 +296,7 @@ our $Float_int	= qr{(?i)[0-9]+e-?[0-9]+[fl]?};
 our $Float	= qr{$Float_hex|$Float_dec|$Float_int};
 our $Constant	= qr{$Float|$Binary|$Octal|$Hex|$Int};
 our $Assignment	= qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
-our $Compare    = qr{<=|>=|==|!=|<|>};
+our $Compare    = qr{<=|>=|==|!=|<|(?<!-)>};
 our $Arithmetic = qr{\+|-|\*|\/|%};
 our $Operators	= qr{
 			<=|>=|==|!=|
-- 
1.8.1.2.459.gbcd45b4.dirty

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