[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@xxxxxxx>
Change-Id: I29d80501e44096068e98b5d5984e63822dfcef82
---
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 cc048c348a92..58b59152a8be 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2769,15 +2769,15 @@ 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) {
--
2.25.1
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