2016-09-10 12:54:26 +00:00
|
|
|
From 7ab57c24a8c094163c2a5da180edbba0c45b5765 Mon Sep 17 00:00:00 2001
|
2016-01-17 10:42:23 +00:00
|
|
|
From: Eric Anholt <eric@anholt.net>
|
|
|
|
|
Date: Fri, 23 Oct 2015 12:33:43 +0100
|
2016-09-10 12:54:26 +00:00
|
|
|
Subject: [PATCH] drm/vc4: Remove extra barrier()s aroudn CTnCA/CTnEA setup.
|
2016-01-17 10:42:23 +00:00
|
|
|
|
|
|
|
|
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
|
