Re: [PATCH v1] drm/shmem-helper: Correct doc-comment of drm_gem_shmem_get_sg_table()

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On Tue, Mar 08, 2022 at 04:34:01PM +0300, Dmitry Osipenko wrote:
> drm_gem_shmem_get_sg_table() never returns NULL on error, but a ERR_PTR.
> Correct the doc comment which says that it returns NULL on error.
> 
> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/drm_gem_shmem_helper.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index 8ad0e02991ca..37009418cd28 100644
> --- a/drivers/gpu/drm/drm_gem_shmem_helper.c
> +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
> @@ -662,7 +662,7 @@ EXPORT_SYMBOL(drm_gem_shmem_print_info);
>   * drm_gem_shmem_get_pages_sgt() instead.
>   *
>   * Returns:
> - * A pointer to the scatter/gather table of pinned pages or NULL on failure.
> + * A pointer to the scatter/gather table of pinned pages or errno on failure.

Hm usually we write "negative errno" for these, since the error numbers
are defined as positive numbers. Care to respin?

Thanks a lot, Daniel

>   */
>  struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem)
>  {
> -- 
> 2.35.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch



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