diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2017-01-17 10:28:56 +0200 |
|---|---|---|
| committer | Archit Taneja <architt@codeaurora.org> | 2017-01-18 09:29:31 +0530 |
| commit | ba5d7e6160b7aed4df92d1764aa90790db0e7996 (patch) | |
| tree | 64b2099bc56077c901e4249af9ecfc983e5fc6ab | |
| parent | 527b863f6ad4f4f1707cbc2237df9d83d0c848c1 (diff) | |
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
| -rw-r--r-- | drivers/gpu/drm/bridge/dw-hdmi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c index ef10bb866b2f..488dc1a9204f 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); |