From: Zhan Liu zhan.liu@amd.com
[ Upstream commit 509b9a5b4865dee723296f143695a7774fc96c4a ]
[Why] If GPU is in reset state, force enabling link will cause unexpected behaviour.
[How] Avoid handling HPD IRQ when GPU is in reset state.
Signed-off-by: Zhan Liu zhan.liu@amd.com Reviewed-by: Nikola Cornij nikola.cornij@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 875fd187463e..dcb4e585c270 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2726,15 +2726,15 @@ static void handle_hpd_rx_irq(void *param) } }
- if (!amdgpu_in_reset(adev)) + if (!amdgpu_in_reset(adev)) { mutex_lock(&adev->dm.dc_lock); #ifdef CONFIG_DRM_AMD_DC_HDCP result = dc_link_handle_hpd_rx_irq(dc_link, &hpd_irq_data, NULL); #else result = dc_link_handle_hpd_rx_irq(dc_link, NULL, NULL); #endif - if (!amdgpu_in_reset(adev)) mutex_unlock(&adev->dm.dc_lock); + }
out: if (result && !is_mst_root_connector) {