linux-kernel - Re: [PATCH 1/4] drm/dp_mst: Improve kdocs for drm_dp_check_act

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Date:   Mon, 6 Apr 2020 15:21:34 -0400
From:   Sean Paul <sean@...rly.run>
To:     Lyude Paul <lyude@...hat.com>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] drm/dp_mst: Improve kdocs for drm_dp_check_act_status()

On Fri, Apr 3, 2020 at 4:08 PM Lyude Paul <lyude@...hat.com> wrote:
>
> No functional changes.
>
> Signed-off-by: Lyude Paul <lyude@...hat.com>
> Cc: Sean Paul <sean@...rly.run>

Reviewed-by: Sean Paul <sean@...rly.run>

> ---
>  drivers/gpu/drm/drm_dp_mst_topology.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 10d0315af513..2b9ce965f044 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -4462,10 +4462,14 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr,
>
>
>  /**
> - * drm_dp_check_act_status() - Check ACT handled status.
> + * drm_dp_check_act_status() - Polls for ACT handled status.
>   * @mgr: manager to use
>   *
> - * Check the payload status bits in the DPCD for ACT handled completion.
> + * Tries waiting for the MST hub to finish updating it's payload table by
> + * polling for the ACT handled bit.
> + *
> + * Returns:
> + * 0 if the ACT was handled in time, negative error code on failure.
>   */
>  int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
>  {
> --
> 2.25.1
>