[Intel-gfx] [PATCH v3 3/3] drm/i915/display: add hotplug.suspended flag

[Murthy, Arun R]

> -----Original Message-----
> From: Hajda, Andrzej <andrzej.hajda at intel.com>
> Sent: Wednesday, July 13, 2022 8:50 PM
> To: Jani Nikula <jani.nikula at linux.intel.com>; Ville Syrjälä
> <ville.syrjala at linux.intel.com>; Murthy, Arun R <arun.r.murthy at intel.com>
> Cc: Hajda, Andrzej <andrzej.hajda at intel.com>; Joonas Lahtinen
> <joonas.lahtinen at linux.intel.com>; Vivi, Rodrigo <rodrigo.vivi at intel.com>;
> Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>; Daniel Vetter
> <daniel at ffwll.ch>; intel-gfx at lists.freedesktop.org; dri-
> devel at lists.freedesktop.org
> Subject: [PATCH v3 3/3] drm/i915/display: add hotplug.suspended flag
> 
> HPD events during driver removal can be generated by hardware and
> software frameworks - drm_dp_mst, the former we can avoid by disabling
> interrupts, the latter can be triggered by any drm_dp_mst transaction, and
> this is too late. Introducing suspended flag allows to solve this chicken-egg
> problem.
> 
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5950
> Signed-off-by: Andrzej Hajda <andrzej.hajda at intel.com>
> ---
Reviewed-by: Arun R Murthy <arun.r.murthy at intel.com>

Thanks and Regards,
Arun R Murthy
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