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<head>
<base href="https://bugs.freedesktop.org/" />
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<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 --- - [BSW]CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()" after boot"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81202">81202</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>[BSW]CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()" after boot
</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>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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=102587" name="attach_102587" title="dmesg">attachment 102587</a> <a href="attachment.cgi?id=102587&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: No.
Non-working platforms: BSW
==kernel==
--------------------------
origin/drm-intel-nightly: 16025dad8e9964a5810385f755d43f1c48d6fdcc(fails)
drm-intel-nightly: 2014y-07m-09d-14h-17m-14s integration manifest
origin/drm-intel-next-queued: d101c8fe9bda6578ae72d6021415cfaad2b422f0(fails)
drm/i915: remove i915_rstdby_delays debugfs entry
origin/drm-intel-fixes: 01527b3127997ef6370d5ad4fa25d96847fbf12a(fails)
drm/i915/vlv: T12 eDP panel timing enforcement during reboot
==Bug detailed description==
CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955
check_power_well_state+0x69/0x6f [i915]()" after boot
Dmesg shows:
[ 6.992821] ------------[ cut here ]------------
[ 6.992867] WARNING: CPU: 0 PID: 1237 at
drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()
[ 6.992870] state mismatch for 'dpio-tx-c-23' (always_on 0 hw state 0
use-count 4 disable_power_well 1
[ 6.992876] Modules linked in: option usb_wwan usbserial i915(+) video
button drm_kms_helper drm
[ 6.992880] CPU: 0 PID: 1237 Comm: udevd Tainted: G W
3.16.0-rc3_drm-intel-fixes_92ae62_20140711+ #414
[ 6.992884] 0000000000000000 0000000000000009 ffffffff817803ed
ffff8800733af4b8
[ 6.992887] ffffffff8103986c 0000000000000000 ffffffffa0069e3d
0000000000000000
[ 6.992890] ffffffffa00fc1f0 ffffffffa00fc1f0 0000000000000005
0000000000800000
[ 6.992891] Call Trace:
[ 6.992895] [<ffffffff817803ed>] ? dump_stack+0x41/0x51
[ 6.992899] [<ffffffff8103986c>] ? warn_slowpath_common+0x78/0x90
[ 6.992944] [<ffffffffa0069e3d>] ? check_power_well_state+0x69/0x6f [i915]
[ 6.992949] [<ffffffff8103991c>] ? warn_slowpath_fmt+0x45/0x4a
[ 6.992993] [<ffffffffa0068645>] ? vlv_power_well_enabled+0x85/0x91 [i915]
[ 6.993049] [<ffffffffa0069e3d>] ? check_power_well_state+0x69/0x6f [i915]
[ 6.993096] [<ffffffffa006e3f5>] ? intel_display_power_put+0xc8/0xfc [i915]
[ 6.993155] [<ffffffffa00a90db>] ? intel_display_set_init_power+0x28/0x33
[i915]
[ 6.993214] [<ffffffffa00aa9fa>] ? __intel_set_mode+0xf8a/0x11d4 [i915]
[ 6.993217] [<ffffffff8177d3cc>] ? printk+0x4f/0x54
[ 6.993277] [<ffffffffa00aca4f>] ? intel_set_mode+0xd/0x27 [i915]
[ 6.993335] [<ffffffffa00ad635>] ? intel_crtc_set_config+0x70e/0xa13 [i915]
[ 6.993349] [<ffffffffa000c038>] ? drm_mode_set_config_internal+0x48/0xad
[drm]
[ 6.993355] [<ffffffffa004bf94>] ? restore_fbdev_mode+0x8f/0xa8
[drm_kms_helper]
[ 6.993361] [<ffffffffa004bfca>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x1d/0x34 [drm_kms_helper]
[ 6.993366] [<ffffffffa004d1e2>] ? drm_fb_helper_set_par+0x39/0x58
[drm_kms_helper]
[ 6.993370] [<ffffffff813650e9>] ? fbcon_init+0x2ff/0x408
[ 6.993374] [<ffffffff813b94a5>] ? visual_init+0xaf/0x102
[ 6.993378] [<ffffffff813bac42>] ? do_bind_con_driver+0x1a1/0x2ca
[ 6.993382] [<ffffffff813bae9d>] ? do_take_over_console+0x132/0x162
[ 6.993386] [<ffffffff813647d6>] ? do_fbcon_takeover+0x53/0x96
[ 6.993389] [<ffffffff81055751>] ? notifier_call_chain+0x2e/0x59
[ 6.993393] [<ffffffff81055890>] ? __blocking_notifier_call_chain+0x43/0x5d
[ 6.993397] [<ffffffff8136e39d>] ? register_framebuffer+0x23f/0x29d
[ 6.993403] [<ffffffffa004cab8>] ? drm_fb_helper_initial_config+0x359/0x3ff
[drm_kms_helper]
[ 6.993460] [<ffffffffa0098f6f>] ? gen8_write32+0x77/0xf2 [i915]
[ 6.993516] [<ffffffffa0098ef8>] ? gen8_write64+0xef/0xef [i915]
[ 6.993579] [<ffffffffa00d34b9>] ? i915_driver_load+0xc3a/0xe67 [i915]
[ 6.993585] [<ffffffff81779795>] ? klist_add_tail+0x1d/0x40
[ 6.993599] [<ffffffffa000764f>] ? drm_dev_register+0x74/0xe7 [drm]
[ 6.993603] [<ffffffff8137f382>] ? acpi_pci_irq_enable+0x11c/0x12f
[ 6.993615] [<ffffffffa00097de>] ? drm_get_pci_dev+0xf4/0x1af [drm]
[ 6.993619] [<ffffffff81350d6a>] ? local_pci_probe+0x36/0x7c
[ 6.993622] [<ffffffff8132a231>] ? ida_get_new_above+0x171/0x18b
[ 6.993626] [<ffffffff8135100e>] ? pci_device_probe+0xcc/0xf0
[ 6.993630] [<ffffffff813d8b16>] ? driver_probe_device+0x9d/0x1d5
[ 6.993635] [<ffffffff813d8c4e>] ? driver_probe_device+0x1d5/0x1d5
[ 6.993638] [<ffffffff813d8ca1>] ? __driver_attach+0x53/0x73
[ 6.993642] [<ffffffff813d740e>] ? bus_for_each_dev+0x4e/0x7f
[ 6.993646] [<ffffffff813d83c4>] ? bus_add_driver+0xe7/0x1cc
[ 6.993650] [<ffffffff813d92ea>] ? driver_register+0x82/0xb5
[ 6.993653] [<ffffffffa0113000>] ? 0xffffffffa0112fff
[ 6.993657] [<ffffffff81000301>] ? do_one_initcall+0xe3/0x176
[ 6.993661] [<ffffffff810f5c8e>] ? __vunmap+0x8c/0xc4
[ 6.993665] [<ffffffff8108bf75>] ? load_module+0x1821/0x1b04
[ 6.993669] [<ffffffff81089b95>] ? module_unload_free+0xca/0xca
[ 6.993674] [<ffffffff8108c2e8>] ? SyS_init_module+0x90/0x9b
[ 6.993677] [<ffffffff81785f92>] ? system_call_fastpath+0x16/0x1b
==Reproduce steps==
----------------------------
1. boot
2. dmesg |grep Call Trace</pre>
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