[PATCH v4 3/3] drm/bridge/lontium-lt9611uxc: move HPD notification out of IRQ handler

Andrzej Hajda a.hajda at samsung.com
Fri Jan 22 09:34:28 UTC 2021


W dniu 22.01.2021 o 00:33, Dmitry Baryshkov pisze:
> drm hotplug handling code (drm_client_dev_hotplug()) can wait on mutex,
> thus delaying further lt9611uxc IRQ events processing.  It was observed
> occasionally during bootups, when drm_client_modeset_probe() was waiting
> for EDID ready event, which was delayed because IRQ handler was stuck
> trying to deliver hotplug event.
> Move hotplug notifications from IRQ handler to separate work to be able
> to process IRQ events without delays.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge")


Reviewed-by: Andrzej Hajda <a.hajda at samsung.com>


Let's wait till Monday for other comments, then I can queue the patchset.


Regards
Andrzej


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