From 183ebfb8365a86e5667d5c6f898cf44308e6c4c2 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 17 Jan 2017 10:28:56 +0200 Subject: [PATCH] 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: Laurent Pinchart Reviewed-by: Jose Abreu Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-7-laurent.pinchart+renesas@ideasonboard.com --- drivers/gpu/drm/bridge/dw-hdmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c index ef10bb866b2fa..488dc1a9204f3 100644 --- a/drivers/gpu/drm/bridge/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/dw-hdmi.c @@ -1805,7 +1805,8 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { dev_dbg(hdmi->dev, "EVENT=%s\n", 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); -- 2.39.5