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- From 77d99c047cae1413a2a5f2aa2f0a0723388d9e7b Mon Sep 17 00:00:00 2001
- From: Eric Anholt <eric@anholt.net>
- Date: Fri, 23 Oct 2015 12:33:43 +0100
- Subject: [PATCH] drm/vc4: Remove extra barrier()s aroudn CTnCA/CTnEA setup.
- The writel() that these expand to already does barriers.
- Signed-off-by: Eric Anholt <eric@anholt.net>
- ---
- drivers/gpu/drm/vc4/vc4_gem.c | 9 +++------
- 1 file changed, 3 insertions(+), 6 deletions(-)
- --- a/drivers/gpu/drm/vc4/vc4_gem.c
- +++ b/drivers/gpu/drm/vc4/vc4_gem.c
- @@ -104,14 +104,11 @@ submit_cl(struct drm_device *dev, uint32
- {
- struct vc4_dev *vc4 = to_vc4_dev(dev);
-
- - V3D_WRITE(V3D_CTNCA(thread), start);
- - barrier();
- -
- - /* Set the end address of the control list. Writing this
- - * register is what starts the job.
- + /* Set the current and end address of the control list.
- + * Writing the end register is what starts the job.
- */
- + V3D_WRITE(V3D_CTNCA(thread), start);
- V3D_WRITE(V3D_CTNEA(thread), end);
- - barrier();
- }
-
- int
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