| From a731f1a3dc018610df31aa41670687745724df24 Mon Sep 17 00:00:00 2001 |
| From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> |
| Date: Tue, 17 Jan 2017 10:28:56 +0200 |
| Subject: [PATCH 241/255] 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 <laurent.pinchart+renesas@ideasonboard.com> |
| Reviewed-by: Jose Abreu <joabreu@synopsys.com> |
| Signed-off-by: Archit Taneja <architt@codeaurora.org> |
| Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-7-laurent.pinchart+renesas@ideasonboard.com |
| (cherry picked from commit ba5d7e6160b7aed4df92d1764aa90790db0e7996) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| drivers/gpu/drm/bridge/dw-hdmi.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- 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, |
| 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); |
