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drm/bridge/lontium-lt9611uxc: fix provided connector suport 

- 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: bc6fa8676e ("drm/bridge/lontium-lt9611uxc: move HPD notification out of IRQ handler")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210708230329.395976-1-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov 2021-07-09 02:03:29 +03:00 committed by Robert Foss
parent 9962601ca5
commit 1518496578
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GPG Key ID: 3EFD900F76D1D784
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/bridge/lontium-lt9611uxc.c
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@ -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(&lt9611uxc->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(&lt9611uxc->connector,
&lt9611uxc_bridge_connector_helper_funcs);
ret = drm_connector_init(bridge->dev, &lt9611uxc->connector,