<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - i915 pm resume: assert_can_disable_lcpll"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80203">80203</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>i915 pm resume: assert_can_disable_lcpll
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>patrik.lundquist@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=101323" name="attach_101323" title="dmesg">attachment 101323</a> <a href="attachment.cgi?id=101323&action=edit" title="dmesg">[details]</a></span>
dmesg
Got several errors of this kind when resuming a 3.15.1 kernel on a Core
i5-4300U with Intel HD Graphics 4400.
The kernel is <a href="http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15.1-utopic/">http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15.1-utopic/</a> to
be precise.
[ 1535.839295] ------------[ cut here ]------------
[ 1535.839324] WARNING: CPU: 1 PID: 226 at
/home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:6890
assert_can_disable_lcpll+0x34c/0x360 [i915]()
[ 1535.839325] Power well on
[ 1535.839326] Modules linked in: ctr ccm arc4 iwlmvm mac80211
snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl
snd_hda_intel
snd_hda_controller x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel
snd_hda_codec snd_hwdep kvm rfcomm bnep snd_pcm joydev serio_raw snd_seq_
midi snd_seq_midi_event snd_rawmidi lpc_ich rtsx_pci_ms thinkpad_acpi iwlwifi
snd_seq nvram memstick intel_smartconnect snd_seq_device snd_timer btusb
cfg80211 bluetooth snd 6lowpan_iphc mac_hid soundcore nls_iso8859_1 parport_pc
ppdev lp parport dm_crypt rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper
ablk_helper cryptd i915 psmouse i2c_algo_bit e1000e ahci drm_kms_helper libahci
r
tsx_pci drm ptp pps_core wmi video
[ 1535.839353] CPU: 1 PID: 226 Comm: kworker/1:3 Not tainted
3.15.1-031501-generic #201406161841
[ 1535.839354] Hardware name: LENOVO 20AM009DMS/20AM009DMS, BIOS GIET74WW (2.24
) 05/13/2014
[ 1535.839358] Workqueue: pm pm_runtime_work
[ 1535.839359] 0000000000001aea ffff88022e99bb58 ffffffff8176e144
0000000000000007
[ 1535.839361] ffff88022e99bba8 ffff88022e99bb98 ffffffff8106ce2c
0000000000000046
[ 1535.839363] ffff8802326cdb78 ffff88022e5f8000 ffff8802326cdb80
0000000000000000
[ 1535.839364] Call Trace:
[ 1535.839369] [<ffffffff8176e144>] dump_stack+0x46/0x58
[ 1535.839372] [<ffffffff8106ce2c>] warn_slowpath_common+0x8c/0xc0
[ 1535.839373] [<ffffffff8106cf16>] warn_slowpath_fmt+0x46/0x50
[ 1535.839386] [<ffffffffa016a7bc>] assert_can_disable_lcpll+0x34c/0x360
[i915]
[ 1535.839397] [<ffffffffa017230a>] hsw_disable_lcpll.constprop.67+0x1a/0x330
[i915]
[ 1535.839409] [<ffffffffa017b362>] hsw_enable_pc8+0x52/0xc0 [i915]
[ 1535.839415] [<ffffffffa0123130>] i915_runtime_suspend+0x80/0xd0 [i915]
[ 1535.839419] [<ffffffff813bf6da>] pci_pm_runtime_suspend+0x7a/0x160
[ 1535.839421] [<ffffffff813bf660>] ? pci_legacy_suspend_late+0x100/0x100
[ 1535.839422] [<ffffffff814bd51d>] __rpm_callback+0x3d/0xc0
[ 1535.839424] [<ffffffff814bd5cf>] rpm_callback+0x2f/0x90
[ 1535.839425] [<ffffffff814bdd62>] rpm_suspend+0x102/0x5b0
[ 1535.839428] [<ffffffff810a5c8d>] ? vtime_common_task_switch+0x3d/0x50
[ 1535.839429] [<ffffffff814beb4a>] pm_runtime_work+0xda/0xe0
[ 1535.839432] [<ffffffff8108935f>] process_one_work+0x17f/0x4c0
[ 1535.839434] [<ffffffff8108a57b>] worker_thread+0x11b/0x3d0
[ 1535.839436] [<ffffffff8108a460>] ? manage_workers.isra.21+0x190/0x190
[ 1535.839437] [<ffffffff810913c9>] kthread+0xc9/0xe0
[ 1535.839439] [<ffffffff81091300>] ? flush_kthread_worker+0xb0/0xb0
[ 1535.839444] ---[ end trace c87999fe6d3fddb8 ]---
[ 1595.905349] ------------[ cut here ]------------</pre>
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