Applied to drm-misc-next On Fri, 9 Jul 2021 at 01:03, Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> wrote: > > - set DRM_CONNECTOR_POLL_HPD as the connector will generate hotplug > events on its own > > - do not call drm_kms_helper_hotplug_event() unless mode_config.funcs > pointer is not NULL to remove possible kernel oops. > > Fixes: bc6fa8676ebb ("drm/bridge/lontium-lt9611uxc: move HPD notification out of IRQ handler") > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > --- > drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c > index 3cac16db970f..010657ea7af7 100644 > --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c > +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c > @@ -167,9 +167,10 @@ static void lt9611uxc_hpd_work(struct work_struct *work) > struct lt9611uxc *lt9611uxc = container_of(work, struct lt9611uxc, work); > bool connected; > > - if (lt9611uxc->connector.dev) > - drm_kms_helper_hotplug_event(lt9611uxc->connector.dev); > - else { > + if (lt9611uxc->connector.dev) { > + if (lt9611uxc->connector.dev->mode_config.funcs) > + drm_kms_helper_hotplug_event(lt9611uxc->connector.dev); > + } else { > > mutex_lock(<9611uxc->ocm_lock); > connected = lt9611uxc->hdmi_connected; > @@ -339,6 +340,8 @@ static int lt9611uxc_connector_init(struct drm_bridge *bridge, struct lt9611uxc > return -ENODEV; > } > > + lt9611uxc->connector.polled = DRM_CONNECTOR_POLL_HPD; > + > drm_connector_helper_add(<9611uxc->connector, > <9611uxc_bridge_connector_helper_funcs); > ret = drm_connector_init(bridge->dev, <9611uxc->connector, > -- > 2.30.2 >