[Bug 70839] [IVB] Undocking laptop causes warning in intel_dp_link_down+0x1d2/0x210
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Jan 29 17:56:50 PST 2014
https://bugs.freedesktop.org/show_bug.cgi?id=70839
--- Comment #9 from Yuly Novikov <ynovikov at chromium.org> ---
I've been trying to find commits that might affect it by myself, looking at
drm-intel-next branch, and I believe with the current code, the warning will
still occur. The sequence of events leading to the warning is as follows:
ironlake_irq_handler()
ilk_display_irq_handler()
cpt_irq_handler()
intel_hpd_irq_handler()
i915_hotplug_work_func()
intel_dp_hot_plug()
intel_dp_check_link_status()
intel_dp_get_link_status()
intel_dp_link_down()
drm_helper_hpd_irq_event()
drm_kms_helper_hotplug_event()
drm_sysfs_hotplug_event()
kobject_uevent_env()
<userspace uevent processing>
drm_mode_obj_set_property_ioctl()
drm_mode_connector_set_obj_prop()
intel_connector_dpms()
intel_encoder_dpms()
intel_crtc_update_dpms()
ironlake_crtc_disable()
intel_disable_dp()
intel_dp_link_down()
There were several changes on these paths, but I fail to find there a change
that would prevent from intel_dp_link_down() to be called twice on SNB or IVB.
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