Re: [PATCH v8 10/29] drm/msm/dp: add link_ready to manage link-level operations

[Dmitry Baryshkov]

On Tue, Nov 10, 2026 at 12:54:31PM +0800, Yongxing Mou wrote:
> In MST mode, multiple streams share the same DP link. Track a link_ready
> state so msm_dp_display_prepare_link() runs only once per link and
> repeated calls are skipped.
> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 48 +++++++++++++++++++++++++++----------
>  drivers/gpu/drm/msm/dp/dp_display.h |  1 +
>  2 files changed, 37 insertions(+), 12 deletions(-)
> 
> @@ -1570,6 +1587,11 @@ void msm_dp_display_unprepare(struct msm_dp *msm_dp_display)
>  
>  	dp = container_of(msm_dp_display, struct msm_dp_display_private, msm_dp_display);
>  
> +	if (!msm_dp_display->link_ready) {
> +		drm_dbg_dp(dp->drm_dev, "Link already setup, return\n");

Link already disabled.

With that fixed:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>

-- 
With best wishes
Dmitry