drm/amd/amdgpu: fix null pointer in runtime pm

fix the null pointer issue when runtime pm is triggered.

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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 2f60b70..5b5ca0e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4866,7 +4866,7 @@ int amdgpu_device_baco_enter(struct drm_device *dev)
        if (!amdgpu_device_supports_baco(adev_to_drm(adev)))
                return -ENOTSUPP;
 
-       if (ras && ras->supported)
+       if (ras && ras->supported && adev->nbio.funcs->enable_doorbell_interrupt)
                adev->nbio.funcs->enable_doorbell_interrupt(adev, false);
 
        return amdgpu_dpm_baco_enter(adev);
@@ -4885,7 +4885,7 @@ int amdgpu_device_baco_exit(struct drm_device *dev)
        if (ret)
                return ret;
 
-       if (ras && ras->supported)
+       if (ras && ras->supported && adev->nbio.funcs->enable_doorbell_interrupt)
                adev->nbio.funcs->enable_doorbell_interrupt(adev, true);
 
        return 0;