[Bug 89552] [SKL]kms_universal_plane causes call trace

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89552

--- Comment #1 from Damien Lespiau <damien.lespiau at gmail.com> ---
Just for record, I've seen several times that people extrace traces grping on
the log level, that's not giving the whole picture. It'd be better to have the
whole trace:

[  141.410019] ------------[ cut here ]------------
[  141.410057] WARNING: CPU: 0 PID: 5172 at drivers/gpu/drm/i915/intel_dp.c:658
intel_dp_aux_ch+0xaa/0x57f [i915]()
[  141.410059] eDP powered off while attempting aux channel communication.
[  141.410062] Modules linked in: dm_mod snd_hda_codec_realtek
snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller i2c_i801 pcspkr
snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore wmi battery parport_pc
parport ac acpi_cpufreq i915 button video drm_kms_helper drm
[  141.410092] CPU: 0 PID: 5172 Comm: kms_universal_p Not tainted
4.0.0-rc3_kcloud_62f93b_20150310+ #2
[  141.410096] Hardware name: Intel Corporation Skylake Client platform/Skylake
Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B068.R00.1501090908 01/09/2015
[  141.410099]  0000000000000000 0000000000000009 ffffffff81794128
ffff88009a797a68
[  141.410105]  ffffffff8103bd5a ffff880004c424f8 ffffffffa00ea255
0000000000000000
[  141.410110]  ffff880004c420e0 ffff880143f70000 ffff880143f70000
ffff880004c424a8
[  141.410116] Call Trace:
[  141.410127]  [<ffffffff81794128>] ? dump_stack+0x40/0x50
[  141.410135]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[  141.410161]  [<ffffffffa00ea255>] ? intel_dp_aux_ch+0xaa/0x57f [i915]
[  141.410168]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[  141.410193]  [<ffffffffa00ea255>] ? intel_dp_aux_ch+0xaa/0x57f [i915]
[  141.410200]  [<ffffffff81064f70>] ? wait_woken+0x7c/0x7c
[  141.410225]  [<ffffffffa00ea828>] ? intel_dp_aux_transfer+0xfe/0x127 [i915]
[  141.410232]  [<ffffffff81798243>] ? mutex_lock+0x9/0x25
[  141.410241]  [<ffffffffa00515db>] ? drm_dp_dpcd_access+0x5b/0xed
[drm_kms_helper]
[  141.410250]  [<ffffffffa0051680>] ? drm_dp_dpcd_read+0x13/0x17
[drm_kms_helper]
[  141.410273]  [<ffffffffa00e64fb>] ? intel_dp_dpcd_read_wake+0x3a/0x64 [i915]
[  141.410279]  [<ffffffff81798243>] ? mutex_lock+0x9/0x25
[  141.410302]  [<ffffffffa00e9523>] ? intel_dp_probe_oui+0x2a/0xaf [i915]
[  141.410326]  [<ffffffffa00e99ac>] ? intel_dp_detect+0x111/0x169 [i915]
[  141.410336]  [<ffffffffa0051e88>] ?
drm_helper_probe_single_connector_modes_merge_bits+0xc4/0x395 [drm_kms_helper]
[  141.410354]  [<ffffffffa000ef5d>] ? drm_mode_getconnector+0xda/0x2aa [drm]
[  141.410369]  [<ffffffffa00047d4>] ? drm_ioctl+0x344/0x3b3 [drm]
[  141.410376]  [<ffffffff810eed43>] ? tlb_finish_mmu+0x1e/0x2f
[  141.410391]  [<ffffffffa000ee83>] ? drm_mode_getcrtc+0xfe/0xfe [drm]
[  141.410405]  [<ffffffffa0003b60>] ? drm_gem_vm_close+0x2a/0x4b [drm]
[  141.410413]  [<ffffffff8111fb0e>] ? do_vfs_ioctl+0x360/0x424
[  141.410420]  [<ffffffff8111fc1b>] ? SyS_ioctl+0x49/0x7a
[  141.410424]  [<ffffffff81799972>] ? system_call_fastpath+0x12/0x17
[  141.410428] ---[ end trace 4c6bc5d7d0a9c4c7 ]---

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