[PATCH 2/2] drm/amdgpu: skip the new gc doorbell function for some asics

[Alex Deucher]

From: Xiaojian Du <Xiaojian.Du at amd.com>

This patch will skip the new gc doorbell function for some asics,
only enable new doorbell model on aisc where it is supported.

Signed-off-by: Xiaojian Du <Xiaojian.Du at amd.com>
Reviewed-by: Huang Rui <ray.huang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 97d37b2e58f2..85fddec0d4ba 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -4592,7 +4592,8 @@ static int gfx_v11_0_hw_init(void *handle)
 	if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
 		gfx_v11_0_select_cp_fw_arch(adev);
 
-	adev->nbio.funcs->gc_doorbell_init(adev);
+	if (adev->nbio.funcs->gc_doorbell_init)
+		adev->nbio.funcs->gc_doorbell_init(adev);
 
 	r = gfx_v11_0_rlc_resume(adev);
 	if (r)
-- 
2.35.1