[PATCH] drm/amdgpu: add the lost mutex_init back

[Pan, Xinhui]

Initialize notifier_lock.

Signed-off-by: xinhui pan <xinhui.pan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2c64d2a83d61..c2453532fd95 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2851,6 +2851,7 @@ 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)
-- 
2.17.1