[PATCH v2 05/12] drm/msm/dp: Drop EV_USER_NOTIFICATION

Dmitry Baryshkov dmitry.baryshkov at oss.qualcomm.com
Sat Aug 9 02:14:48 UTC 2025


On Fri, Aug 08, 2025 at 05:35:17PM -0700, Jessica Zhang wrote:
> Currently, we queue an event for signalling HPD connect/disconnect. This
> can mean a delay in plug/unplug handling and notifying DRM core when a
> hotplug happens.
> 
> Drop EV_USER_NOTIFICATION and signal the IRQ event as part of hotplug
> handling.
> 
> Signed-off-by: Jessica Zhang <jessica.zhang at oss.qualcomm.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 

This removes serialisation around
msm_dp_display_send_hpd_notification(). This means that it can be called
this function can be called in parallel, so we need to add locking
around .link_ready access.

-- 
With best wishes
Dmitry


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