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Message-ID: <eefe5120-638a-40bc-5ed8-e26defe178ca@suse.de>
Date:   Mon, 18 Apr 2022 20:25:35 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Dmitry Osipenko <dmitry.osipenko@...labora.com>,
        David Airlie <airlied@...ux.ie>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Chia-I Wu <olvaffe@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Daniel Almeida <daniel.almeida@...labora.com>,
        Gert Wollny <gert.wollny@...labora.com>,
        Gustavo Padovan <gustavo.padovan@...labora.com>,
        Daniel Stone <daniel@...ishbar.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Rob Clark <robdclark@...il.com>,
        Emil Velikov <emil.l.velikov@...il.com>,
        Robin Murphy <robin.murphy@....com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        Dmitry Osipenko <digetx@...il.com>
Subject: Re: [PATCH v4 09/15] drm/shmem-helper: Correct doc-comment of
 drm_gem_shmem_get_sg_table()

Hi

Am 18.04.22 um 00:37 schrieb Dmitry Osipenko:
> 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@...labora.com>


> ---
>   drivers/gpu/drm/drm_gem_shmem_helper.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index 8ad0e02991ca..30ee46348a99 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.

', or an ERR_PTR()-encoded errno code on failure'

>    */
>   struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_shmem_object *shmem)
>   {
> @@ -688,7 +688,8 @@ EXPORT_SYMBOL_GPL(drm_gem_shmem_get_sg_table);
>    * drm_gem_shmem_get_sg_table() should not be directly called by drivers.
>    *
>    * Returns:
> - * A pointer to the scatter/gather table of pinned pages or errno on failure.
> + * A pointer to the scatter/gather table of pinned pages ERR_PTR()-encoded

', or an' before ERR_PTR

With the improved grammar:

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>


> + * error code on failure.
>    */
>   struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem)
>   {

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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