linux-kernel - [PATCH 11/13] checkpatch: struct file_operations should normally be const

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Date:	Sun,  7 Dec 2008 18:30:48 +0000
From:	Andy Whitcroft <apw@...dowen.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andy Whitcroft <apw@...dowen.org>
Subject: [PATCH 11/13] checkpatch: struct file_operations should normally be const

From: Andy Whitcroft <apw@...onical.com>

In the general use case struct file_operations should be a const object.
Check for and warn where it is not.  As suggested by Steven and Ingo.

Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Andy Whitcroft <apw@...onical.com>
---
 scripts/checkpatch.pl |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c39ce0b..94371f6 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2509,6 +2509,11 @@ sub process {
 		if ($line =~ /^.\s*__initcall\s*\(/) {
 			WARN("please use device_initcall() instead of __initcall()\n" . $herecurr);
 		}
+# check for struct file_operations, ensure they are const.
+		if ($line =~ /\bstruct\s+file_operations\b/ &&
+		    $line !~ /\bconst\b/) {
+			WARN("struct file_operations should normally be const\n" . $herecurr);
+		}
 
 # use of NR_CPUS is usually wrong
 # ignore definitions of NR_CPUS and usage to define arrays as likely right
-- 
1.6.0.4.911.gc990

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