From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Thu, 26 May 2016 22:16:06 +0000 (-0700)
Subject: seqlock: fix raw_read_seqcount_latch()
X-Git-Tag: v4.9.8~1994^2~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=50755bc1c305340660bbfa65fdae3ed113d8fe0e;p=platform%2Fkernel%2Flinux-rpi3.git

seqlock: fix raw_read_seqcount_latch()

lockless_dereference() is supposed to take pointer not integer.

Link: http://lkml.kernel.org/r/20160521201448.GA7429@p183.telecom.by
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index e058210..7973a82 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -277,7 +277,7 @@ static inline void raw_write_seqcount_barrier(seqcount_t *s)
 
 static inline int raw_read_seqcount_latch(seqcount_t *s)
 {
-	return lockless_dereference(s->sequence);
+	return lockless_dereference(s)->sequence;
 }
 
 /**
@@ -331,7 +331,7 @@ static inline int raw_read_seqcount_latch(seqcount_t *s)
  *	unsigned seq, idx;
  *
  *	do {
- *		seq = lockless_dereference(latch->seq);
+ *		seq = lockless_dereference(latch)->seq;
  *
  *		idx = seq & 0x01;
  *		entry = data_query(latch->data[idx], ...);