Commit 606be047 authored Oct 24, 2019 by Bhanusree Committed by Daniel Vetter Oct 24, 2019

drm/gpu: Add comment for memory barrier



-Add comment for memory barrier
-Issue found using checkpatch.pl

Signed-off-by: Bhanusree <bhanusreemahesh@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1571891313-14341-1-git-send-email-bhanusreemahesh@gmail.com

parent 2ec35bd2

drivers/gpu/drm/drm_cache.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -62,10 +62,10 @@ static void drm_cache_flush_clflush(struct page *pages[],
		{
		unsigned long i;

		mb();
		mb(); /Full memory barrier used before so that CLFLUSH is ordered/
		for (i = 0; i < num_pages; i++)
		drm_clflush_page(*pages++);
		mb();
		mb(); /Also used after CLFLUSH so that all cache is flushed/
		}
		#endif

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