[PATCH V1 resend] err.h: add (missing) unlikely() to IS_ERR_OR_NULL()

[Viresh Kumar <viresh.kumar@linaro.org>]

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@linaro.org>
---
@Jiri: You have applied all other patches, but this one. Can you please
apply this one as well, as all others were applied based on the
assumption that this one is applied. :)

 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