From: pding <Pixel.Ding@xxxxxxx> Normally all waiting get timeout if there's one. Release the lock and return immediately when timeout happens. v2: - set the se_sh to broadcase before return Signed-off-by: pding <Pixel.Ding at amd.com> --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 8 ++++++++ drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 8 ++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 4a0cf53..e0b7876 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -3842,6 +3842,14 @@ static void gfx_v8_0_wait_for_rlc_serdes(struct amdgpu_device *adev) break; udelay(1); } + if (k == adev->usec_timeout) { + gfx_v8_0_select_se_sh(adev, 0xffffffff, + 0xffffffff, 0xffffffff); + mutex_unlock(&adev->grbm_idx_mutex); + DRM_INFO("Timeout wait for RLC serdes %u,%u\n", + i, j); + return; + } } } gfx_v8_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff); diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 060a6ff..39b02e9 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -1628,6 +1628,14 @@ static void gfx_v9_0_wait_for_rlc_serdes(struct amdgpu_device *adev) break; udelay(1); } + if (k == adev->usec_timeout) { + gfx_v9_0_select_se_sh(adev, 0xffffffff, + 0xffffffff, 0xffffffff); + mutex_unlock(&adev->grbm_idx_mutex); + DRM_INFO("Timeout wait for RLC serdes %u,%u\n", + i, j); + return; + } } } gfx_v9_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff); -- 2.9.5