Extern or forward variable declaration at drivers/gpu/drm/amd/amdgpu/amdgpu.h, line 78 References: drivers/gpu/drm/amd/amdgpu/amdgpu.h, line 78 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 968 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 970 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 971 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 974 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 976 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 977 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 983 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 985 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 986 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 995 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 999 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, line 1011 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c, line 73 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c, line 132 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c, line 877 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c, line 852