target/linux/brcm2708/patches-4.4/0099-drm-vc4-No-need-to-stop-the-stopped-threads.patch


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From 8faa3b83201819d56f997a2b2ecaf8c690080852 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 23 Oct 2015 12:31:56 +0100
Subject: [PATCH 099/170] drm/vc4: No need to stop the stopped threads.

This was leftover debug code from the hackdriver.  We never submit
unless the thread is already idle.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 drivers/gpu/drm/vc4/vc4_gem.c | 4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -104,10 +104,6 @@ submit_cl(struct drm_device *dev, uint32
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	/* Stop any existing thread and set state to "stopped at halt" */
-	V3D_WRITE(V3D_CTNCS(thread), V3D_CTRUN);
-	barrier();
-
 	V3D_WRITE(V3D_CTNCA(thread), start);
 	barrier();