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Regards,
Prike
> -----Original Message-----
> From: Liang, Prike <[email protected]>
> Sent: Tuesday, January 6, 2026 9:19 PM
> To: [email protected]
> Cc: Deucher, Alexander <[email protected]>; Koenig, Christian
> <[email protected]>; Liang, Prike <[email protected]>
> Subject: [PATCH] drm/amdgpu: validate the flush_gpu_tlb_pasid()
>
> Validate flush_gpu_tlb_pasid() availability before flushing tlb.
>
> Signed-off-by: Prike Liang <[email protected]>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> index cd4acc6adc9e..f871f1693483 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> @@ -780,6 +780,10 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct
> amdgpu_device *adev, uint16_t pasid,
> return 0;
>
> if (!adev->gmc.flush_pasid_uses_kiq || !ring->sched.ready) {
> +
> + if (!adev->gmc.gmc_funcs->flush_gpu_tlb_pasid)
> + return 0;
> +
> if (adev->gmc.flush_tlb_needs_extra_type_2)
> adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
> 2, all_hub,
> --
> 2.34.1
