From: Christian König <christian.koenig@amd.com>
Date: Tue, 12 Jul 2016 11:57:03 +0000 (+0200)
Subject: drm/amdgpu: always signal all fences
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2ef004d984226fb6845481bc928ae37fb1dacc5e;p=linux-beck.git

drm/amdgpu: always signal all fences

A little fallout from "drm/amdgpu: sanitize fence numbers", we
sometimes need to signal all fences in the ring.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index e320b5b73ac6..0b109aebfec6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -204,10 +204,13 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
 	if (seq != ring->fence_drv.sync_seq)
 		amdgpu_fence_schedule_fallback(ring);
 
+	if (unlikely(seq == last_seq))
+		return;
+
 	last_seq &= drv->num_fences_mask;
 	seq &= drv->num_fences_mask;
 
-	while (last_seq != seq) {
+	do {
 		struct fence *fence, **ptr;
 
 		++last_seq;
@@ -228,7 +231,7 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
 			BUG();
 
 		fence_put(fence);
-	}
+	} while (last_seq != seq);
 }
 
 /**