diff options
| author | Bhanusree <bhanusreemahesh@gmail.com> | 2019-10-25 11:57:38 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-10-25 09:35:06 +0200 |
| commit | c6a5f8daff1179a443f3bf797c0400d84a8818a0 (patch) | |
| tree | 719567c9d35baaffa467a459d9e39edb77decfcc /drivers/gpu/drm/drm_cache.c | |
| parent | e109c6db528c02ee3d81e43d9571b499c75f55f5 (diff) | |
drm/gpu: Fix Memory barrier without comment Issue
-Issue found using checkpatch.pl
-Insert comments for memory barrier usage
Signed-off-by: Bhanusree <bhanusreemahesh@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1571984858-4644-1-git-send-email-bhanusreemahesh@gmail.com
Diffstat (limited to 'drivers/gpu/drm/drm_cache.c')
| -rw-r--r-- | drivers/gpu/drm/drm_cache.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c index 12f8d1ba8653..03e01b000f7a 100644 --- a/drivers/gpu/drm/drm_cache.c +++ b/drivers/gpu/drm/drm_cache.c @@ -126,10 +126,10 @@ drm_clflush_sg(struct sg_table *st) if (static_cpu_has(X86_FEATURE_CLFLUSH)) { struct sg_page_iter sg_iter; - mb(); + mb(); /*CLFLUSH is ordered only by using memory barriers*/ for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) drm_clflush_page(sg_page_iter_page(&sg_iter)); - mb(); + mb(); /*Make sure that all cache line entry is flushed*/ return; } @@ -160,11 +160,11 @@ drm_clflush_virt_range(void *addr, unsigned long length) void *end = addr + length; addr = (void *)(((unsigned long)addr) & -size); - mb(); + mb(); /*CLFLUSH is only ordered with a full memory barrier*/ for (; addr < end; addr += size) clflushopt(addr); clflushopt(end - 1); /* force serialisation */ - mb(); + mb(); /*Ensure that evry data cache line entry is flushed*/ return; } |