drm/omap: Don't call HPD registration operations recursively
Instead of calling the hot-plug detection callback registration operations (.register_hpd_cb() and .unregister_hpd_cb()) recursively from the display device back to the first device that provides hot plug detection support, iterate over the devices manually in the DRM connector code. This moves the complexity to a single central location and simplifies the logic in omap_dss_device drivers. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
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