[PATCH 1/6] drm/amdgpu: fix mutex list null pointer reference

[Xiangliang Yu]

From: Pixel Ding <Pixel.Ding at amd.com>

Fix NULL pointer reference.

Signed-off-by: Pixel Ding <Pixel.Ding at amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e685ca9..aef2019 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2118,7 +2118,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 
 	DRM_INFO("amdgpu: finishing device.\n");
 	adev->shutdown = true;
-	drm_crtc_force_disable_all(adev->ddev);
+	if (adev->ddev->mode_config.funcs)
+		drm_crtc_force_disable_all(adev->ddev);
 	/* evict vram memory */
 	amdgpu_bo_evict_vram(adev);
 	amdgpu_ib_pool_fini(adev);
-- 
2.7.4