On 16.09.25 09:08, Pierre-Eric Pelloux-Prayer wrote:
> This lock was part of the SDMA workaround originally implemented in
> gmc_v10_0_flush_gpu_tlb (a70cb2176f7ef6f moved it to
> amdgpu_gmc_flush_gpu_tlb).
>
> This means this lock is useless and be safely dropped.
>
> Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-pra...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
> b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
> index 76d3c40735b0..454fd1104c6d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
> @@ -312,9 +312,7 @@ static void gmc_v12_0_flush_gpu_tlb(struct amdgpu_device
> *adev, uint32_t vmid,
> return;
> }
>
> - mutex_lock(&adev->mman.gtt_window_lock);
> gmc_v12_0_flush_vm_hub(adev, vmid, vmhub, 0);
> - mutex_unlock(&adev->mman.gtt_window_lock);
> return;
> }
>
