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drm/bridge: synopsys: dw-hdmi: Fix crush when system suspend

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If HDMI HPD detect delayed work won't be cancel, system will
crush because clk and PD has been disabled. So HDMI HPD detect
workqueue should be flushed when system suspend.

Change-Id: Idb8018c2efcffc3aee5fd80872f1270360809235
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
This commit is contained in:
Algea Cao 2018-09-07 15:52:59 +08:00 committed by Tao Huang
parent 15c0dfe938
commit 0495591680
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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@ -3844,6 +3844,8 @@ void dw_hdmi_suspend(struct device *dev)
if (hdmi->irq)
disable_irq(hdmi->irq);
mutex_unlock(&hdmi->mutex);
cancel_delayed_work(&hdmi->work);
flush_workqueue(hdmi->workqueue);
pinctrl_pm_select_sleep_state(dev);
}
EXPORT_SYMBOL_GPL(dw_hdmi_suspend);