Commit 509b9a5b authored by Zhan Liu's avatar Zhan Liu Committed by Alex Deucher
Browse files

drm/amd/display: Avoid HPD IRQ in GPU reset state 



[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: default avatarZhan Liu <zhan.liu@amd.com>
Reviewed-by: default avatarNikola Cornij <nikola.cornij@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7ddd9770

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+2 −2
Original line number Diff line number Diff line
@@ -2768,15 +2768,15 @@ 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) {