FYI, we noticed the below changes on

https://github.com/0day-ci/linux Ander-Conselvan-de-Oliveira/Unduplicate-CHV-phy-code/20160408-233653
commit 92695c76d59946f55d61d247c31e8e966bce471e ("drm/i915: Set crtc_state->lane_count for HDMI")


[   12.367649] scsi 2:0:0:0: Direct-Access     ATA      HDT722516DLA380  A96A PQ: 0 ANSI: 5
[   12.407920] fbcon: inteldrmfb (fb0) is primary device
[   12.604206] firewire_core 0000:03:03.0: created device fw0: GUID 1234567800000000, S400
[   12.648079] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in lane_count (expected 4, found 0)
[   12.648081] ------------[ cut here ]------------
[   12.648106] WARNING: CPU: 3 PID: 45 at drivers/gpu/drm/i915/intel_display.c:12937 intel_modeset_check_state+0xa6e/0xd20 [i915]()
[   12.648106] pipe state doesn't match!
[   12.648123] Modules linked in: snd_hda_codec_hdmi(+) x86_pkg_temp_thermal coretemp snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ppdev i915 snd_hda_intel video crc32c_intel ghash_clmulni_intel snd_hda_codec aesni_intel lrw gf128mul glue_helper ablk_helper cryptd ahci snd_hda_core snd_hwdep libahci firewire_ohci snd_pcm snd_timer drm_kms_helper ata_generic syscopyarea sysfillrect sysimgblt pata_acpi fb_sys_fops serio_raw pcspkr firewire_core snd crc_itu_t soundcore shpchp nuvoton_cir libata drm floppy(+) rc_core parport_pc parport
[   12.648124] CPU: 3 PID: 45 Comm: kworker/3:1 Not tainted 4.5.0-rc7-01683-g92695c7 #1
[   12.648125] Hardware name:                  /DQ67SW, BIOS SWQ6710H.86A.0047.2011.0222.1058 02/22/2011
[   12.648134] Workqueue: events output_poll_execute [drm_kms_helper]
[   12.648135]  0000000000000000 ffff8800b854fac0 ffffffff814261da ffff8800b854fb08
[   12.648136]  ffffffffa03f0f88 ffff8800b854faf8 ffffffff81079fe6 ffff88009e623800
[   12.648137]  ffff88009e815000 ffff88009ec79378 ffff88013ca0c800 ffff88009f997000
[   12.648138] Call Trace:
[   12.648142]  [<ffffffff814261da>] dump_stack+0x63/0x89
[   12.648145]  [<ffffffff81079fe6>] warn_slowpath_common+0x86/0xc0
[   12.648146]  [<ffffffff8107a06c>] warn_slowpath_fmt+0x4c/0x50
[   12.648168]  [<ffffffffa037a08e>] intel_modeset_check_state+0xa6e/0xd20 [i915]
[   12.648189]  [<ffffffffa031f6f4>] ? intel_runtime_pm_put+0x64/0xc0 [i915]
[   12.648211]  [<ffffffffa0381d9d>] intel_atomic_commit+0xa3d/0xd00 [i915]
[   12.648213]  [<ffffffff810bd7f0>] ? wait_woken+0xa0/0xa0
[   12.648230]  [<ffffffffa00d4227>] drm_atomic_commit+0x37/0x60 [drm]
[   12.648234]  [<ffffffffa0224467>] restore_fbdev_mode+0x237/0x260 [drm_kms_helper]
[   12.648245]  [<ffffffffa00d30ba>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
[   12.648249]  [<ffffffffa0226623>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
[   12.648253]  [<ffffffffa022669d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
[   12.648257]  [<ffffffffa02265a2>] drm_fb_helper_hotplug_event+0xa2/0xf0 [drm_kms_helper]
[   12.648281]  [<ffffffffa039b68e>] intel_fbdev_output_poll_changed+0x1e/0x30 [i915]
[   12.648285]  [<ffffffffa0219707>] drm_kms_helper_hotplug_event+0x27/0x30 [drm_kms_helper]
[   12.648288]  [<ffffffffa0219909>] output_poll_execute+0x199/0x1e0 [drm_kms_helper]
[   12.648290]  [<ffffffff81092365>] process_one_work+0x155/0x440
[   12.648291]  [<ffffffff81092fae>] worker_thread+0x4e/0x4c0
[   12.648293]  [<ffffffff818e112c>] ? __schedule+0x35c/0x8e0
[   12.648295]  [<ffffffff81092f60>] ? rescuer_thread+0x350/0x350
[   12.648296]  [<ffffffff81092f60>] ? rescuer_thread+0x350/0x350
[   12.648298]  [<ffffffff81098554>] kthread+0xd4/0xf0
[   12.648299]  [<ffffffff81098480>] ? kthread_park+0x60/0x60
[   12.648300]  [<ffffffff818e5eff>] ret_from_fork+0x3f/0x70
[   12.648302]  [<ffffffff81098480>] ? kthread_park+0x60/0x60
[   12.648310] ---[ end trace 2705c1b875b31b65 ]---
[   12.852225] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])



To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot