From 96cc905058ba25ff153907e2359afe3d8b542127 Mon Sep 17 00:00:00 2001
From: Candice Li <candice.li@amd.com>
Date: Thu, 18 Aug 2022 10:47:09 +0800
Subject: drm/amdgpu: Check num_gfx_rings for gfx v9_0 rb setup.
Git-commit: c351938350ab9b5e978dede2c321da43de7eb70c
Patch-mainline: v6.0-rc3
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
No need to set up rb when no gfx rings.
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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 c6e0f9313a7f..fc9c1043244c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2587,7 +2587,8 @@ static void gfx_v9_0_constants_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);
adev->gfx.config.db_debug2 = RREG32_SOC15(GC, 0, mmDB_DEBUG2);
--
2.38.1