drm/amdgpu: add the lost mutex_init back

Initialize notifier_lock.

Bug: https://gitlab.freedesktop.org/drm/amd/issues/1016
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index d3eff4c..53d8820 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2848,6 +2848,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
        hash_init(adev->mn_hash);
        mutex_init(&adev->lock_reset);
        mutex_init(&adev->psp.mutex);
+       mutex_init(&adev->notifier_lock);
 
        r = amdgpu_device_check_arguments(adev);
        if (r)