[PATCH v6 1/6] drm: sun4i: dsi: Drop DRM bind race with bridge attach

[Jagan Teki]

On Mon, Dec 13, 2021 at 10:32 PM Maxime Ripard <maxime at cerno.tech> wrote:
>
> On Fri, Dec 10, 2021 at 04:47:06PM +0530, Jagan Teki wrote:
> > Existing host driver will keep looking for DRM pointer in
> > sun6i_dsi_attach and defers even if the particular DSI device
> > is found for the first time. Meanwhile it triggers the bind
> > callback and gets the DRM pointer and then continues the
> > sun6i_dsi_attach.
> >
> > This makes a deadlock situation if sun6i_dsi_attach is trying
> > to find the bridge.
>
> I'm not sure what you mean by deadlock here, there's no lock involved?

deadlock parse here for general understanding, where bind is trying to
attach bridge but drm pointer is not available that point and drm
pointer will available only when bind done. This is what I'm calling
as deadlock here.

Anyway, now I'm able to support both panel and bridge to support
hotplug so no need to drop the hotplug support.

Please let me know, if you have any questions so-that I can send next
version series.

Thanks,
Jagan.