Commit ba5d7e61 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Archit Taneja

drm: bridge: dw-hdmi: Don't forward HPD events to DRM core before attach

Hotplug events should only be forwarded to the DRM core by the interrupt
handler when the bridge has been attached, otherwise the DRM device
pointer will be NULL, resulting in a crash.
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: default avatarJose Abreu <joabreu@synopsys.com>
Signed-off-by: default avatarArchit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-7-laurent.pinchart+renesas@ideasonboard.com
parent 527b863f
...@@ -1805,7 +1805,8 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) ...@@ -1805,7 +1805,8 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
dev_dbg(hdmi->dev, "EVENT=%s\n", dev_dbg(hdmi->dev, "EVENT=%s\n",
phy_int_pol & HDMI_PHY_HPD ? "plugin" : "plugout"); phy_int_pol & HDMI_PHY_HPD ? "plugin" : "plugout");
drm_helper_hpd_irq_event(hdmi->bridge.dev); if (hdmi->bridge.dev)
drm_helper_hpd_irq_event(hdmi->bridge.dev);
} }
hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0); hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0);
......
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