From 42e152931deba7500e756c39e8e2df2e244860f2 Mon Sep 17 00:00:00 2001
From: Joe Perches <joe@perches.com>
Date: Tue, 15 Mar 2016 14:58:01 -0700
Subject: [PATCH] checkpatch: exclude asm volatile from complex macro check

asm volatile and all its variants like __asm__ __volatile__ ("<foo>")
are reported as errors with "Macros with with complex values should be
enclosed in parentheses".

Make an exception for these asm volatile macro definitions by converting
the "asm volatile" to "asm_volatile" so it appears as a single function
call and the error isn't reported.

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Jeff Merkey <linux.mdb@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 scripts/checkpatch.pl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 0147c91fa549..5c00c1c02dab 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4560,6 +4560,9 @@ sub process {
 			{
 			}
 
+			# Make asm volatile uses seem like a generic function
+			$dstat =~ s/\b_*asm_*\s+_*volatile_*\b/asm_volatile/g;
+
 			my $exceptions = qr{
 				$Declare|
 				module_param_named|
-- 
2.20.1