Am 26.06.2017 um 14:18 schrieb Huang Rui:
Signed-off-by: Huang Rui <ray.hu...@amd.com>
Acked-by: Christian König <christian.koe...@amd.com>.
--- V1 -> V2: - Add READ_ONCE to avoid complier might cause to read as previous fence value. I will refine fence checking with fence interface at amdgpu_fence.c after S3 stress issue completed as Christian's suggestion. Thanks, Ray --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 5bed483..af3c87b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -130,7 +130,7 @@ psp_cmd_submit_buf(struct psp_context *psp, ret = psp_cmd_submit(psp, ucode, cmd_buf_mc_addr, fence_mc_addr, index);- while (*((unsigned int *)psp->fence_buf) != index) {+ while (READ_ONCE(*((unsigned int *)psp->fence_buf)) < index) { msleep(1); }
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