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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 - [CHT] Unclaimed write to register 0x1e0100"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112120">112120</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CHT] Unclaimed write to register 0x1e0100
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI 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>not set
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</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>jwrdegoede@fedoraproject.org
</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>I'm seeing an "Unclaimed write to register 0x1e0100" WARN_ON trigger with
5.4-rc3 on an Asus T100HA (after a suspend/resume cycle):
[ 247.738558] ------------[ cut here ]------------
[ 247.739115] Unclaimed write to register 0x1e0100
[ 247.739349] WARNING: CPU: 0 PID: 2778 at
drivers/gpu/drm/i915/intel_uncore.c:1098 skl_pcode_request+0xae1/0x74a0 [i915]
[ 247.739363] Modules linked in: fuse bnep sunrpc vfat fat
snd_soc_sst_cht_bsw_rt5645 mei_hdcp intel_rapl_msr intel_powerclamp gpio_keys
coretemp kvm_intel kvm irqbypass intel_cstate asus_nb_wmi wdat_wdt pcspkr
btsdio brcmfmac brcmutil joydev cfg80211 snd_sof_acpi snd_sof_intel_byt
snd_sof_intel_bdw snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp
snd_intel_sst_acpi snd_intel_sst_core hid_sensor_gyro_3d hid_sensor_magn_3d
hid_sensor_rotation hid_sensor_incl_3d hid_sensor_accel_3d
snd_soc_sst_atom_hifi2_platform hid_sensor_trigger hid_sensor_iio_common
snd_soc_rt5645 industrialio_triggered_buffer snd_soc_acpi_intel_match kfifo_buf
snd_soc_acpi industrialio snd_soc_rl6231 snd_soc_core mei_txe
intel_xhci_usb_role_switch roles cros_ec_ishtp cros_ec processor_thermal_device
hci_uart intel_rapl_common lpc_ich mei snd_hdmi_lpe_audio intel_soc_dts_iosf
intel_atomisp2_pm snd_compress ac97_bus snd_pcm_dmaengine btqca btrtl btbcm
snd_seq btintel bluetooth snd_seq_device snd_pcm intel_hid snd_timer snd
[ 247.739687] ecdh_generic ecc soundcore spi_pxa2xx_platform dw_dmac
int3406_thermal int3403_thermal int340x_thermal_zone int3400_thermal
soc_button_array acpi_thermal_rel intel_int0002_vgpio acpi_pad dm_crypt
hid_sensor_hub intel_ishtp_loader mmc_block intel_ishtp_hid hid_multitouch
crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i915(E)
i2c_algo_bit drm_kms_helper drm hid_asus asus_wmi sparse_keymap uas rfkill
usb_storage intel_ish_ipc intel_ishtp wmi video i2c_hid(E) sdhci_acpi sdhci
mmc_core pwm_lpss_platform pwm_lpss i2c_dev
[ 247.739914] CPU: 0 PID: 2778 Comm: kworker/u8:15 Tainted: G E
5.4.0-rc3+ #188
[ 247.739928] Hardware name: ASUSTeK COMPUTER INC. T100HAN/T100HAN, BIOS
T100HAN.221 05/18/2016
[ 247.739954] Workqueue: events_unbound async_run_entry_fn
[ 247.740027] RIP: 0010:skl_pcode_request+0xae1/0x74a0 [i915]
[ 247.740045] Code: 5d 41 5c 41 5d c3 45 84 ed 48 c7 c0 78 e0 58 c0 44 89 e2
48 c7 c6 6e e0 58 c0 48 0f 44 f0 48 c7 c7 81 e0 58 c0 e8 07 85 cc f9 <0f> 0b 83
2d 06 0b 20 00 01 5b 5d 41 5c 41 5d c3 66 66 2e 0f 1f 84
[ 247.740060] RSP: 0018:ffffb58d81dafce8 EFLAGS: 00010082
[ 247.740078] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000000006
[ 247.740091] RDX: 0000000000000007 RSI: 0000000000000000 RDI:
ffff9b87b4bd7d80
[ 247.740106] RBP: ffff9b87b4290f40 R08: 00000039ae670dd0 R09:
0000000000000000
[ 247.740119] R10: 0000000000000000 R11: ffff9b87ab428900 R12:
00000000001e0100
[ 247.740132] R13: 0000000000000000 R14: ffff9b87b4290f58 R15:
ffffffffbb38da17
[ 247.740148] FS: 0000000000000000(0000) GS:ffff9b87b4a00000(0000)
knlGS:0000000000000000
[ 247.740162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 247.740175] CR2: 00007fd12f6f988a CR3: 000000003d612000 CR4:
00000000001006f0
[ 247.740190] Call Trace:
[ 247.740287] skl_pcode_request+0x66f9/0x74a0 [i915]
[ 247.740395] intel_power_domains_init_hw+0x4ec/0x620 [i915]
[ 247.740469] ? vlv_force_gfx_clock+0x840/0x4430 [i915]
[ 247.740550] intel_power_domains_resume+0x3e/0x60 [i915]
[ 247.740615] vlv_force_gfx_clock+0x7f9/0x4430 [i915]
[ 247.740651] dpm_run_callback+0x66/0x240
[ 247.740693] device_resume_early+0x9d/0x180
[ 247.740736] async_resume_early+0x1c/0x30
[ 247.740757] async_run_entry_fn+0x39/0x160
[ 247.740792] process_one_work+0x247/0x580
[ 247.740863] worker_thread+0x50/0x3b0
[ 247.740919] kthread+0x10a/0x140
[ 247.740936] ? process_one_work+0x580/0x580
[ 247.740952] ? kthread_park+0x90/0x90
[ 247.740990] ret_from_fork+0x3a/0x50
[ 247.741085] irq event stamp: 2162
[ 247.741104] hardirqs last enabled at (2161): [<ffffffffbab3bbdb>]
_raw_spin_unlock_irqrestore+0x4b/0x60
[ 247.741121] hardirqs last disabled at (2162): [<ffffffffbab3c383>]
_raw_spin_lock_irqsave+0x23/0x83
[ 247.741141] softirqs last enabled at (2138): [<ffffffffbae0035d>]
__do_softirq+0x35d/0x45d
[ 247.741159] softirqs last disabled at (2131): [<ffffffffba0f20e4>]
irq_exit+0xf4/0x100
[ 247.741173] ---[ end trace d10e680a24fba687 ]---</pre>
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