linux-kernel - [PATCH V1 Resend 01/11] err.h: add (missing) unlikely() to IS_ERR_OR

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Message-Id: <a39f63516a57828d3ada089a03615dd669ec21f7.1439187003.git.viresh.kumar@linaro.org>
Date:	Mon, 10 Aug 2015 11:42:23 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	akpm@...ux-foundation.org
Cc:	linaro-kernel@...ts.linaro.org, linux-kernel@...r.kernel.org,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH V1 Resend 01/11] err.h: add (missing) unlikely() to IS_ERR_OR_NULL()

IS_ERR_VALUE() already contains it and so we need to add this only to
the !ptr check. That will allow users of IS_ERR_OR_NULL(), to not add
this compiler flag.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 include/linux/err.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/err.h b/include/linux/err.h
index a729120644d5..56762ab41713 100644
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -37,7 +37,7 @@ static inline bool __must_check IS_ERR(__force const void *ptr)
 
 static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
 {
-	return !ptr || IS_ERR_VALUE((unsigned long)ptr);
+	return unlikely(!ptr) || IS_ERR_VALUE((unsigned long)ptr);
 }
 
 /**
-- 
2.4.0

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