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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 - [bsw] unclaimed read/write to PORT_HOTPLUG_EN during init"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98255">98255</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[bsw] unclaimed read/write to PORT_HOTPLUG_EN during init
</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>[ 4.990273] ------------[ cut here ]------------
[ 4.990351] WARNING: CPU: 1 PID: 192 at
drivers/gpu/drm/i915/intel_uncore.c:818 __unclaimed_reg_debug+0x40/0x50 [i915]
[ 4.990364] Unclaimed read from register 0x1e1110
[ 4.990372] Modules linked in: i915(+) nls_utf8 nls_cp437 vfat fat
crct10dif_pclmul crc32c_intel aesni_intel aes_x86_64 glue_helper lrw gf128mul
ablk_helper cryptd intel_gtt drm_kms_helper
[ 4.990425] CPU: 1 PID: 192 Comm: systemd-udevd Not tainted 4.8.0+ #118
[ 4.990433] Hardware name: / , BIOS
PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[ 4.990445] 0000000000000000 ffff880275a0f9b8 ffffffff8124a0ce
ffff880275a0fa08
[ 4.990464] 0000000000000000 ffff880275a0f9f8 ffffffff8104e501
0000033281070494
[ 4.990482] ffff880276308000 00000000001e1110 ffff880276308720
0000000000000006
[ 4.990499] Call Trace:
[ 4.990512] [<ffffffff8124a0ce>] dump_stack+0x4d/0x6f
[ 4.990523] [<ffffffff8104e501>] __warn+0xc1/0xe0
[ 4.990533] [<ffffffff8104e56a>] warn_slowpath_fmt+0x4a/0x50
[ 4.990544] [<ffffffff810630e7>] ? insert_work+0x77/0xc0
[ 4.990592] [<ffffffffa010d170>] __unclaimed_reg_debug+0x40/0x50 [i915]
[ 4.990640] [<ffffffffa010ed78>] fwtable_read32+0xd8/0x130 [i915]
[ 4.990684] [<ffffffffa00c3740>] i915_hpd_irq_setup+0xa0/0xf0 [i915]
[ 4.990732] [<ffffffffa0140120>] intel_hpd_init+0x70/0x90 [i915]
[ 4.990775] [<ffffffffa00bd668>] i915_driver_load+0xcd8/0x1280 [i915]
[ 4.990893] [<ffffffffa00c8248>] i915_pci_probe+0x28/0x40 [i915]
[ 4.990905] [<ffffffff8128218b>] pci_device_probe+0x8b/0xf0
[ 4.990916] [<ffffffff81328afe>] driver_probe_device+0x21e/0x430
[ 4.990925] [<ffffffff81328dea>] __driver_attach+0xda/0xe0
[ 4.990935] [<ffffffff81328d10>] ? driver_probe_device+0x430/0x430
[ 4.990944] [<ffffffff8132686b>] bus_for_each_dev+0x5b/0x90
[ 4.990953] [<ffffffff81328289>] driver_attach+0x19/0x20
[ 4.990962] [<ffffffff81327d06>] bus_add_driver+0x166/0x260
[ 4.990970] [<ffffffffa01ca000>] ? 0xffffffffa01ca000
[ 4.990979] [<ffffffff8132950b>] driver_register+0x5b/0xd0
[ 4.990987] [<ffffffffa01ca000>] ? 0xffffffffa01ca000
[ 4.990997] [<ffffffff81280f57>] __pci_register_driver+0x47/0x50
[ 4.991039] [<ffffffffa01ca043>] i915_init+0x43/0x1000 [i915]
[ 4.991050] [<ffffffff8100044b>] do_one_initcall+0x4b/0x170
[ 4.991060] [<ffffffff8149d46f>] ? preempt_schedule_common+0x1f/0x40
[ 4.991069] [<ffffffff8149d4a7>] ? _cond_resched+0x17/0x20
[ 4.991080] [<ffffffff810deeb4>] do_init_module+0x55/0x1e1
[ 4.991089] [<ffffffff810b5c22>] load_module+0x24a2/0x2880
[ 4.991098] [<ffffffff810b28c0>] ? __symbol_put+0x40/0x40
[ 4.991108] [<ffffffff81145d86>] ? vfs_read+0x116/0x130
[ 4.991118] [<ffffffff810b620c>] SYSC_finit_module+0xbc/0xf0
[ 4.991127] [<ffffffff810b6259>] SyS_finit_module+0x9/0x10
[ 4.991136] [<ffffffff814a125f>] entry_SYSCALL_64_fastpath+0x17/0x93
[ 4.991144] ---[ end trace 6710c23cc2cabc84 ]---</pre>
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