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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97798">97798</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>On resume:
534.786979] ------------[ cut here ]------------
[ 534.787474] WARNING: CPU: 0 PID: 936 at
drivers/gpu/drm/i915/intel_uncore.c:803 __unclaimed_reg_debug+0x73/0x90 [i915]
[ 534.787491] Unclaimed register detected after reading register 0x1e1110
[ 534.787624] Modules linked in: i915 nls_utf8 nls_cp437 vfat fat
crct10dif_pclmul crc32c_intel aesni_intel intel_gtt aes_x86_64 glue_helper lrw
drm_kms_helper gf128mul ablk_helper cryptd
[ 534.787647] CPU: 0 PID: 936 Comm: kworker/u4:11 Not tainted 4.8.0-rc5+ #68
[ 534.787658] Hardware name: / , BIOS
PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[ 534.787697] Workqueue: events_unbound async_run_entry_fn
[ 534.787735] ffffffffa01881d3 ffff8802327e7900 ffffffff813e98d9
ffff8802327e7978
[ 534.787766] 0000000000000000 ffff8802327e7948 ffffffff81079b87
ffff88023275b180
[ 534.787795] 0000032382a62af0 ffffed00464fcf2b 0000000000000001
00000000001e1110
[ 534.787803] Call Trace:
[ 534.788252] [<ffffffffa01881d3>] ? __unclaimed_reg_debug+0x73/0x90 [i915]
[ 534.788275] [<ffffffff813e98d9>] dump_stack+0x68/0x9f
[ 534.788300] [<ffffffff81079b87>] __warn+0x107/0x130
[ 534.788322] [<ffffffff81079c42>] warn_slowpath_fmt+0x92/0xb0
[ 534.788342] [<ffffffff81079bb0>] ? __warn+0x130/0x130
[ 534.788783] [<ffffffffa018cd0c>] ? chv_read32+0x8c/0x350 [i915]
[ 534.789226] [<ffffffffa01881d3>] __unclaimed_reg_debug+0x73/0x90 [i915]
[ 534.789665] [<ffffffffa018cf82>] chv_read32+0x302/0x350 [i915]
[ 534.790105] [<ffffffffa018cc80>] ? chv_read16+0x350/0x350 [i915]
[ 534.790507] [<ffffffffa0109fc8>] i915_hpd_irq_setup+0x148/0x1c0 [i915]
[ 534.790959] [<ffffffffa01df23b>] intel_hpd_init+0xab/0xc0 [i915]
[ 534.791358] [<ffffffffa01007af>] i915_drm_resume+0xef/0x1b0 [i915]
[ 534.791758] [<ffffffffa01008aa>] i915_pm_restore+0x3a/0x40 [i915]
[ 534.792156] [<ffffffffa01008c9>] i915_pm_resume+0x9/0x10 [i915]
[ 534.792177] [<ffffffff81441a5e>] pci_pm_resume+0xde/0x180
[ 534.792198] [<ffffffff81441980>] ? pci_pm_resume_noirq+0x100/0x100
[ 534.792222] [<ffffffff8156fec0>] dpm_run_callback+0x40/0x80
[ 534.792244] [<ffffffff815706d9>] device_resume+0xe9/0x3a0
[ 534.792264] [<ffffffff81570990>] ? device_resume+0x3a0/0x3a0
[ 534.792283] [<ffffffff815709a8>] async_resume+0x18/0x40
[ 534.792305] [<ffffffff810af06f>] async_run_entry_fn+0x7f/0x220
[ 534.792332] [<ffffffff810a1be3>] process_one_work+0x3d3/0x810
[ 534.792353] [<ffffffff810a1b5d>] ? process_one_work+0x34d/0x810
[ 534.792377] [<ffffffff810a1810>] ? cancel_delayed_work_sync+0x10/0x10
[ 534.792400] [<ffffffff810a20a3>] worker_thread+0x83/0x720
[ 534.792424] [<ffffffff810a2020>] ? process_one_work+0x810/0x810
[ 534.792443] [<ffffffff810ab59d>] kthread+0x18d/0x1b0
[ 534.792463] [<ffffffff810ab410>] ? kthread_create_on_node+0x340/0x340
[ 534.792488] [<ffffffff81802e6f>] ret_from_fork+0x1f/0x40
[ 534.792508] [<ffffffff810ab410>] ? kthread_create_on_node+0x340/0x340
[ 534.792521] ---[ end trace 0655747a541f420b ]---
[ 534.909983] PM: resume of devices complete after 169.241 msecs
[ 534.919573] PM: Finishing wakeup.
[ 534.919578] Restarting tasks ... done.</pre>
</div>
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