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drm/amd/display: fix issues with driver unload 

Currently, we run into a number of WARN()s when attempting to unload the
amdgpu driver (e.g. using "modprobe -r amdgpu"). These all stem from
calling drm_encoder_cleanup() too early. So, to fix this we can stop
calling drm_encoder_cleanup() from amdgpu_dm_fini() and instead have it
be called from amdgpu_dm_encoder_destroy(). Also, we don't need to free
in amdgpu_dm_encoder_destroy() since mst_encoders[] isn't explicitly
allocated by the slab allocator.

Fixes: f74367e492 ("drm/amdgpu/display: create fake mst encoders ahead of time (v4)")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hamza Mahfooz 2023-01-17 15:12:49 -05:00 committed by Alex Deucher
parent 74ea8e78ab
commit e433adc60f
2 changed files with 0 additions and 5 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -1730,10 +1730,6 @@ static void amdgpu_dm_fini(struct amdgpu_device *adev)
adev->dm.vblank_control_workqueue = NULL;
}
for (i = 0; i < adev->dm.display_indexes_num; i++) {
drm_encoder_cleanup(&adev->dm.mst_encoders[i].base);
}
amdgpu_dm_destroy_drm_device(&adev->dm);
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)

1
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
View File

@ -468,7 +468,6 @@ static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs
static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
kfree(encoder);
}
static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = {