On Sat, Aug 02, 2014 at 06:47:10AM +1000, Dave Airlie wrote: > From: Dave Airlie <airlied@xxxxxxxxxx> > > On HSW/BDW the VBT can tell us if we need to have DP support for a port, > if we don't have DP this caused an oops in the hpd handling. > > Don't hook up the DP hpd handling if we don't have a DP port. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81856 > Reported-by: Intel QA Team. > Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_ddi.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c > index 9b1542f..42d4dce 100644 > --- a/drivers/gpu/drm/i915/intel_ddi.c > +++ b/drivers/gpu/drm/i915/intel_ddi.c > @@ -1557,11 +1557,13 @@ void intel_ddi_init(struct drm_device *dev, enum port port) > intel_encoder->cloneable = 0; > intel_encoder->hot_plug = intel_ddi_hot_plug; > > - intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; > - dev_priv->hpd_irq_port[port] = intel_dig_port; > + if (init_dp) { > + /* only hook up hpd processing for DP */ > + intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; > + dev_priv->hpd_irq_port[port] = intel_dig_port; > > - if (init_dp) > dp_connector = intel_ddi_init_dp_connector(intel_dig_port); > + } The (lack of) allocation error handling here will lead to the same oops. diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index a6024de17d34..3634575534b4 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1557,15 +1557,13 @@ void intel_ddi_init(struct drm_device *dev, enum port port) struct intel_digital_port *intel_dig_port; struct intel_encoder *intel_encoder; struct drm_encoder *encoder; - struct intel_connector *hdmi_connector = NULL; - struct intel_connector *dp_connector = NULL; bool init_hdmi, init_dp; init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi || dev_priv->vbt.ddi_port_info[port].supports_hdmi); init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp; if (!init_dp && !init_hdmi) { - DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible\n", + DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, assuming it is\n", port_name(port)); init_hdmi = true; init_dp = true; @@ -1595,23 +1593,28 @@ void intel_ddi_init(struct drm_device *dev, enum port port) DDI_A_4_LANES); intel_encoder->type = INTEL_OUTPUT_UNKNOWN; - intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); + intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); intel_encoder->cloneable = 0; intel_encoder->hot_plug = intel_ddi_hot_plug; - intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; - dev_priv->hpd_irq_port[port] = intel_dig_port; + if (init_dp) { + if (!intel_ddi_init_dp_connector(intel_dig_port)) + goto err; - if (init_dp) - dp_connector = intel_ddi_init_dp_connector(intel_dig_port); + intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; + dev_priv->hpd_irq_port[port] = intel_dig_port; + } /* In theory we don't need the encoder->type check, but leave it just in * case we have some really bad VBTs... */ - if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) - hdmi_connector = intel_ddi_init_hdmi_connector(intel_dig_port); - - if (!dp_connector && !hdmi_connector) { - drm_encoder_cleanup(encoder); - kfree(intel_dig_port); + if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) { + if (!intel_ddi_init_hdmi_connector(intel_dig_port)) + goto err; } + + return; + +err: + drm_encoder_cleanup(encoder); + kfree(intel_dig_port); -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
