From 536fbf946cf84ff60cdef471c23ab96058e62f39 Mon Sep 17 00:00:00 2001 From: Ken Wang Date: Sat, 12 Mar 2016 09:32:30 +0800 Subject: drm/amdgpu: change wptr to 64 bits (v2) Newer asics need 64 bit wptrs. If the wptr is now smaller than the rptr that doesn't indicate a wrap-around anymore. v2: integrate Christian's comments. Signed-off-by: Ken Wang Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index d5eed6b86314..93ecf692b9f6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1601,7 +1601,7 @@ static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v) { if (ring->count_dw <= 0) DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n"); - ring->ring[ring->wptr++] = v; + ring->ring[ring->wptr++ & ring->buf_mask] = v; ring->wptr &= ring->ptr_mask; ring->count_dw--; } -- cgit v1.2.3