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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-07-19 10:27:29 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-07-19 10:27:29 +0300 |
| commit | 2383050f6a3a2e00636eabfcf66445af653ddd80 (patch) | |
| tree | 45e5eb04a8ac280ce36f0d1e4305c8d816ee2e70 /include/linux/seqlock.h | |
| parent | a1bf09e69f8e938fef85f18c117ac390a48f7763 (diff) | |
| parent | 2d635fded22b71381b01e194a59544f2e8d71ef0 (diff) | |
| download | linux-2383050f6a3a2e00636eabfcf66445af653ddd80.tar.xz | |
Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc
Backmerge drm-next to be able to apply Chris' connector_unregister_all
cleanup (need latest i915 and sun4i state for that).
Also there's a trivial conflict in ttm_bo.c that git rerere fails to
remember.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'include/linux/seqlock.h')
| -rw-r--r-- | include/linux/seqlock.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index 7973a821ac58..ead97654c4e9 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -277,7 +277,10 @@ 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; + int seq = READ_ONCE(s->sequence); + /* Pairs with the first smp_wmb() in raw_write_seqcount_latch() */ + smp_read_barrier_depends(); + return seq; } /** @@ -331,7 +334,7 @@ static inline int raw_read_seqcount_latch(seqcount_t *s) * unsigned seq, idx; * * do { - * seq = lockless_dereference(latch)->seq; + * seq = raw_read_seqcount_latch(&latch->seq); * * idx = seq & 0x01; * entry = data_query(latch->data[idx], ...); |