Re: linux-next: build failure after merge of the hmm tree

[Jason Gunthorpe]

On Mon, Aug 23, 2021 at 05:50:27PM +1000, Stephen Rothwell wrote:
> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Mon, 23 Aug 2021 17:46:27 +1000
> Subject: [PATCH] drm/i915/ttm: fix up for "lib/scatterlist: Provide a
>  dedicated function to support tableappend"
> 
> Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
>  drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> index 771eb2963123..d3d95934a047 100644
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> @@ -382,7 +382,6 @@ i915_ttm_region(struct ttm_device *bdev, int ttm_mem_type)
>  static struct sg_table *i915_ttm_tt_get_st(struct ttm_tt *ttm)
>  {
>  	struct i915_ttm_tt *i915_tt = container_of(ttm, typeof(*i915_tt), ttm);
> -	struct scatterlist *sg;
>  	struct sg_table *st;
>  	int ret;
>  
> @@ -393,13 +392,13 @@ static struct sg_table *i915_ttm_tt_get_st(struct ttm_tt *ttm)
>  	if (!st)
>  		return ERR_PTR(-ENOMEM);
>  
> -	sg = __sg_alloc_table_from_pages
> +	ret = sg_alloc_table_from_pages_segment
>  		(st, ttm->pages, ttm->num_pages, 0,
>  		 (unsigned long)ttm->num_pages << PAGE_SHIFT,
> -		 i915_sg_segment_size(), NULL, 0, GFP_KERNEL);
> -	if (IS_ERR(sg)) {
> +		 i915_sg_segment_size(), GFP_KERNEL);
> +	if (ret) {
>  		kfree(st);
> -		return ERR_CAST(sg);
> +		return ERR_PTR(ret);
>  	}

Looks right, thanks

Jason