linux-kernel - [PATCH V2] checkpatch: Update $declaration_macros, add uninitialized

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Date:	Mon, 04 Aug 2014 16:55:57 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Dotan Barak <dotanb@...lanox.com>,
	Andy Whitcroft <apw@...onical.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH V2] checkpatch: Update $declaration_macros, add
 uninitialized_var

Using uninitialized_var reports a false positive for
"Missing blank line after declarations".

Fix it by adding uninitialized_var to the $declaration_macros
exceptions list.

Move the macro list after $Type is declared.

Add optional prefixes to DECLARE_<FOO> and DEFINE_<BAR>
macro declarations to allow forms like:
	MLX4_DECLARE_DOORBELL_LOCK

Signed-off-by: Joe Perches <joe@...ches.com>
Reported-by: Dotan Barak <dotanb@...lanox.com>
---
V2: Update the DECLARE and DEFINE macros to
    allow prefixed use and clarify postfixes

 scripts/checkpatch.pl | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index da74e65..31a731e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -423,11 +423,6 @@ foreach my $entry (@mode_permission_funcs) {
 	$mode_perms_search .= $entry->[0];
 }
 
-our $declaration_macros = qr{(?x:
-	(?:$Storage\s+)?(?:DECLARE|DEFINE)_[A-Z]+\s*\(|
-	(?:$Storage\s+)?LIST_HEAD\s*\(
-)};
-
 our $allowed_asm_includes = qr{(?x:
 	irq|
 	memory
@@ -490,6 +485,12 @@ our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
 our $LvalOrFunc	= qr{((?:[\&\*]\s*)?$Lval)\s*($balanced_parens{0,1})\s*};
 our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
 
+our $declaration_macros = qr{(?x:
+	(?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,2}\s*\(|
+	(?:$Storage\s+)?LIST_HEAD\s*\(|
+	(?:$Storage\s+)?${Type}\s+uninitialized_var\s*\(
+)};
+
 sub deparenthesize {
 	my ($string) = @_;
 	return "" if (!defined($string));


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