[PATCH v5 29/29] drm/omap: dsi: allow DSI commands to be sent early

[Tomi Valkeinen]

On 10/12/2020 09:34, Tomi Valkeinen wrote:

> But we don't have anything stopping omap_dsi_host_transfer being called after the whole bridge has
> been detached (or called before attach). So, if we have a guarantee that the panels won't be doing
> dsi transfers before/during bridge attach or after/during bridge detach, we have no issue. If we
> don't have such a guarantee, it's broken.
> 
> I'll try to figure out if there's such a guarantee, but maybe it's safer to add a flag to indicate
> if the bridge is available, and check that during omap_dsi_host_transfer.

I don't think this can happen. I mixed up the bridge attach/detach and the dsi host attach/detach.
The cancel_delayed_work_sync happens in omap_dsi_host_detach, and I think it's a sensible
expectation that the panel won't first do mipi_dsi_detach(), and then try to do DSI transfers.

 Tomi

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