[RFC PATCH 2/3] drm/amdgpu/ttm: replace duplicate code with exiting function

[Christian König]

Am 15.07.21 um 10:24 schrieb Kevin Wang:
> using exiting function to replace duplicate code blocks in
> amdgpu_ttm_vram_write().

NAK, this should intentionally only use the MM path and not the aper path.

But you could use amdgpu_device_mm_access() here now.

Christian.

>
> Signed-off-by: Kevin Wang <kevin1.wang at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 +------
>   1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 2aa2eb5de37a..2c98e4345ad3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -2207,7 +2207,6 @@ static ssize_t amdgpu_ttm_vram_write(struct file *f, const char __user *buf,
>   		return -ENXIO;
>   
>   	while (size) {
> -		unsigned long flags;
>   		uint32_t value;
>   
>   		if (*pos >= adev->gmc.mc_vram_size)
> @@ -2217,11 +2216,7 @@ static ssize_t amdgpu_ttm_vram_write(struct file *f, const char __user *buf,
>   		if (r)
>   			return r;
>   
> -		spin_lock_irqsave(&adev->mmio_idx_lock, flags);
> -		WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000);
> -		WREG32_NO_KIQ(mmMM_INDEX_HI, *pos >> 31);
> -		WREG32_NO_KIQ(mmMM_DATA, value);
> -		spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
> +		amdgpu_device_vram_access(adev, *pos, &value, 4, true);
>   
>   		result += 4;
>   		buf += 4;