[PATCH 4.14 38/61] drm/amdgpu: Check num_gfx_rings for gfx v9_0 rb setup.

From: Greg Kroah-Hartman
Date: Tue Sep 13 2022 - 11:21:47 EST


From: Candice Li <candice.li@xxxxxxx>

[ Upstream commit c351938350ab9b5e978dede2c321da43de7eb70c ]

No need to set up rb when no gfx rings.

Signed-off-by: Candice Li <candice.li@xxxxxxx>
Reviewed-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 53186c5e1066b..bb0d32b4be74d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1514,7 +1514,8 @@ static void gfx_v9_0_gpu_init(struct amdgpu_device *adev)

gfx_v9_0_tiling_mode_table_init(adev);

- gfx_v9_0_setup_rb(adev);
+ if (adev->gfx.num_gfx_rings)
+ gfx_v9_0_setup_rb(adev);
gfx_v9_0_get_cu_info(adev, &adev->gfx.cu_info);

/* XXX SH_MEM regs */
--
2.35.1