[PATCH AUTOSEL 5.5 408/542] drm/amdgpu: add the lost mutex_init back

Sasha Levin
2020-02-14T15:57:43Z

From: "Pan, Xinhui" <Xinhui.Pan@amd.com>

[ Upstream commit bd0522112332663e386df1b8642052463ea9b3b9 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 332b9c24a2cd0..a2f788ad7e1c6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2797,6 +2797,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
mutex_init(&adev->notifier_lock);
mutex_init(&adev->virt.dpm_mutex);
mutex_init(&adev->psp.mutex);
+ mutex_init(&adev->notifier_lock);

r = amdgpu_device_check_arguments(adev);
if (r)