[Bug 83769] [HSW-ULT] "SPLL enabled": WARNING: CPU: 3 PID: 168 at drivers/gpu/drm/i915/intel_display.c:7366 hsw_enable_pc8+0x5b8/0x660

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83769

--- Comment #1 from Patrik Lundquist <patrik.lundquist at gmail.com> ---
Dump for Linux v3.18-rc1:

------------[ cut here ]------------
WARNING: CPU: 3 PID: 153 at
/home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:7535
assert_can_disable_lcpll+0x295/0x320 [i915]()
SPLL enabled
Modules linked in: ctr ccm arc4 iwlmvm mac80211 iwlwifi intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm joydev cfg80211
rtc_efi serio_raw snd_hda_codec_realtek snd_hda_codec_hdmi
snd_hda_codec_generic thinkpad_acpi nvram snd_hda_intel lpc_ich
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm mac_hid rtsx_pci_ms
intel_smartconnect snd_seq_midi memstick snd_seq_midi_event btusb rfcomm shpchp
bnep bluetooth snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore
binfmt_misc parport_pc ppdev nls_iso8859_1 lp parport sch_fq dm_crypt
rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel
aes_x86_64 lrw gf128mulglue_helper ablk_helper i915 cryptd psmouse e1000e ahci
i2c_algo_bit libahci ptp drm_kms_helper rtsx_pci pps_core drm wmi video [last
unloaded: ipmi_msghandler]
CPU: 3 PID: 153 Comm: kworker/u16:5 Not tainted 3.18.0-031800rc1-generic
#201410192135
Hardware name: LENOVO 20AM009DMS/20AM009DMS, BIOS GIET76WW (2.26 ) 08/27/2014
Workqueue: events_unbound async_run_entry_fn
 0000000000001d6f ffff88022dd63bc8 ffffffff827a1613 ffffffff82c54168
 ffff88022dd63c18 ffff88022dd63c08 ffffffff82074cfc 0000000000000246
 ffff88022e312b58 ffff88022dd70000 ffff88022e312b68 ffff88022e312800
Call Trace:
 [<ffffffff827a1613>] dump_stack+0x46/0x58
 [<ffffffff82074cfc>] warn_slowpath_common+0x8c/0xc0
 [<ffffffff82074de6>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffc01b2015>] assert_can_disable_lcpll+0x295/0x320 [i915]
 [<ffffffffc01bd924>] hsw_disable_lcpll.constprop.86+0x14/0x2e0 [i915]
 [<ffffffffc01c4faf>] hsw_enable_pc8+0x3f/0xa0 [i915]
 [<ffffffffc015e065>] intel_suspend_complete+0x45/0x50 [i915]
 [<ffffffffc015e2e3>] i915_pm_suspend_late+0x33/0x90 [i915]
 [<ffffffffc015e2b0>] ? intel_runtime_suspend+0x240/0x240 [i915]
 [<ffffffff824e0d28>] dpm_run_callback+0x58/0xd0
 [<ffffffff824d095e>] ? device_for_each_child+0x5e/0x70
 [<ffffffff824e11c0>] __device_suspend_late+0xc0/0x1b0
 [<ffffffff824e1d3f>] async_suspend_late+0x1f/0xa0
 [<ffffffff820964cc>] async_run_entry_fn+0x4c/0x160
 [<ffffffff8208d6be>] process_one_work+0x14e/0x460
 [<ffffffff8208e03b>] worker_thread+0x11b/0x3f0
 [<ffffffff8208df20>] ? create_worker+0x1e0/0x1e0
 [<ffffffff82093bb9>] kthread+0xc9/0xe0
 [<ffffffff82093af0>] ? flush_kthread_worker+0x90/0x90
 [<ffffffff827aeebc>] ret_from_fork+0x7c/0xb0
 [<ffffffff82093af0>] ? flush_kthread_worker+0x90/0x90
---[ end trace c7d449c4daccb3a8 ]---

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