[PATCH] Release the mutex hold before backtracing for not supported mxgpu.

[José Pekkarinen]

This patch releases the mutex held soon before entering the initialization
function in case the device doesn't support mxgpu.

Signed-off-by: José Pekkarinen <koalinux at gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
index c25a831f94ec..cac1d8b003e6 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
@@ -307,6 +307,7 @@ void xgpu_vi_init_golden_registers(struct amdgpu_device *adev)
 						 xgpu_tonga_golden_common_all));
 		break;
 	default:
+		mutex_unlock(&adev->grbm_idx_mutex);
 		BUG_ON("Doesn't support chip type.\n");
 		break;
 	}
-- 
2.13.6