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

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[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>
This commit is contained in:
Zhan Liu
2021-05-09 19:30:36 -04:00
committed by Alex Deucher
parent 7ddd977085
commit 509b9a5b48
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -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) {