From 2ceb532b04b7a3b8f534d11a6e839f8b8bff94c1 Mon Sep 17 00:00:00 2001
From: Andy Whitcroft <apw@canonical.com>
Date: Mon, 26 Oct 2009 16:50:14 -0700
Subject: [PATCH] checkpatch: fix false errors due to macro concatenation
The macro concatenation (##) sequence can cause false errors when checking
macro's. Checkpatch doesn't currently know about the operator.
For example this line,
+ entry = (struct ftrace_raw_##call *)raw_data; \
is correct but it produces the following error,
ERROR: need consistent spacing around '*' (ctx:WxB)
+ entry = (struct ftrace_raw_##call *)raw_data;\
^
The line above doesn't have any spacing problems, and if you remove the
macro concatenation sequence checkpatch doesn't give any errors.
Extend identifier handling to include ## concatenation within the
definition of an identifier.
Reported-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
scripts/checkpatch.pl | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 05b10d6bc58121..cb2dac37aaffec 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -130,7 +130,10 @@ if ($tree) {
my $emitted_corrupt = 0;
-our $Ident = qr{[A-Za-z_][A-Za-z\d_]*};
+our $Ident = qr{
+ [A-Za-z_][A-Za-z\d_]*
+ (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
+ }x;
our $Storage = qr{extern|static|asmlinkage};
our $Sparse = qr{
__user|
--
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