[PATCH 6.1 285/609] drm/amdgpu: invoke pm_genpd_remove() before freeing genpd

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ce Sun <[email protected]>

commit 28c9b3c5dc35cc790d11e26ca3fc6e068be63998 upstream.

Call pm_genpd_remove() to unregister from global list prior to releasing
acp_genpd memory, and clear the pointer after free.

Signed-off-by: Ce Sun <[email protected]>
Reviewed-by: Tao Zhou <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit cd8650d7a91ee8b768e202354672553faa5cc1f2)
Cc: [email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -559,7 +559,9 @@ static int acp_hw_fini(void *handle)
 
 	mfd_remove_devices(adev->acp.parent);
 	kfree(adev->acp.acp_res);
+	pm_genpd_remove(&adev->acp.acp_genpd->gpd);
 	kfree(adev->acp.acp_genpd);
+	adev->acp.acp_genpd = NULL;
 	kfree(adev->acp.acp_cell);
 
 	return 0;