[Bug 102988] [CFL] DUT doesn't get back from s3, s4 and freeze

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102988

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
Maybe unrelated, but of note:

[   19.936409] Interrupt register 0x44418 is not zero: 0x00000001
[   19.936427] ------------[ cut here ]------------
[   19.936472] WARNING: CPU: 6 PID: 247 at drivers/gpu/drm/i915/i915_irq.c:161
gen3_assert_iir_is_zero+0x32/0x80 [i915]
[   19.936475] Modules linked in: e1000e(+) sdhci_pci(+) ptp sdhci pps_core
i915(+) mmc_core prime_numbers i2c_hid
[   19.936495] CPU: 6 PID: 247 Comm: systemd-udevd Tainted: G     U         
4.14.0-rc2-drm-tip-ww39-commit-0b65077+ #1
[   19.936497] Hardware name: Intel Corporation CoffeeLake Client
Platform/CoffeeLake H DDR4 RVP, BIOS CNLSFWR1.R00.X098.A00.1707301945
07/30/2017
[   19.936499] task: ffff88044c90aa40 task.stack: ffffc90000548000
[   19.936524] RIP: 0010:gen3_assert_iir_is_zero+0x32/0x80 [i915]
[   19.936526] RSP: 0018:ffffc9000054b9c0 EFLAGS: 00010082
[   19.936530] RAX: 0000000000000032 RBX: ffff88044bae0000 RCX:
0000000000000002
[   19.936532] RDX: 0000000080000002 RSI: 0000000000000000 RDI:
00000000ffffffff
[   19.936534] RBP: ffffc9000054b9d0 R08: 0000000000000000 R09:
0000000000000001
[   19.936536] R10: 0000000000000001 R11: 00000000d4447445 R12:
0000000000044418
[   19.936538] R13: 0000000000044418 R14: ffff88044bae4f2c R15:
0000000000000006
[   19.936540] FS:  00007f22321528c0(0000) GS:ffff88045b380000(0000)
knlGS:0000000000000000
[   19.936542] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.936544] CR2: 00007f223207f000 CR3: 000000044c9fb001 CR4:
00000000003606e0
[   19.936545] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[   19.936547] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[   19.936549] Call Trace:
[   19.936572]  gen8_irq_power_well_post_enable+0x77/0xe0 [i915]
[   19.936596]  hsw_power_well_enable+0xc3/0x130 [i915]
[   19.936619]  intel_power_well_enable+0x35/0x40 [i915]
[   19.936640]  __intel_display_power_get_domain+0x7c/0xa0 [i915]
[   19.936662]  intel_display_power_get+0x30/0x40 [i915]
[   19.936683]  intel_display_set_init_power+0x37/0x40 [i915]
[   19.936704]  intel_power_domains_init_hw+0x5e/0x7a0 [i915]
[   19.936726]  i915_driver_load+0x9a7/0x16b0 [i915]
[   19.936731]  ? trace_hardirqs_on+0xd/0x10
[   19.936753]  i915_pci_probe+0x34/0xa0 [i915]
[   19.936757]  pci_device_probe+0xa3/0x130
[   19.936761]  driver_probe_device+0x299/0x440
[   19.936764]  __driver_attach+0xde/0xe0
[   19.936767]  ? driver_probe_device+0x440/0x440
[   19.936769]  bus_for_each_dev+0x61/0xa0
[   19.936772]  driver_attach+0x19/0x20
[   19.936775]  bus_add_driver+0x1f2/0x260
[   19.936777]  ? 0xffffffffa01ef000
[   19.936780]  driver_register+0x5b/0xd0
[   19.936782]  ? 0xffffffffa01ef000
[   19.936784]  __pci_register_driver+0x66/0x70
[   19.936809]  i915_init+0x6b/0x6e [i915]
[   19.936813]  do_one_initcall+0xef/0x160
[   19.936816]  ? rcu_read_lock_sched_held+0x75/0x80
[   19.936819]  ? kmem_cache_alloc_trace+0x283/0x2f0
[   19.936822]  ? do_init_module+0x22/0x1fa
[   19.936826]  do_init_module+0x5a/0x1fa
[   19.936829]  load_module+0x2205/0x25b0
[   19.936833]  ? kernel_read+0x2c/0x40
[   19.936837]  SyS_finit_module+0xbc/0xf0
[   19.936840]  ? SyS_finit_module+0xbc/0xf0
[   19.936846]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[   19.936848] RIP: 0033:0x7f2230fc29f9
[   19.936850] RSP: 002b:00007ffd31f5d4f8 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[   19.936853] RAX: ffffffffffffffda RBX: 0000556236e15310 RCX:
00007f2230fc29f9
[   19.936855] RDX: 0000000000000000 RSI: 0000556236e15390 RDI:
000000000000000c
[   19.936857] RBP: 00007f22318e5e23 R08: 0000000000000000 R09:
000000000000003c
[   19.936859] R10: 000000000000000c R11: 0000000000000246 R12:
0000000000000000
[   19.936861] R13: 0000556236e151f0 R14: 0000000000020000 R15:
0000556235394e30
[   19.936865] Code: 89 e5 41 54 41 89 f4 53 48 89 fb ff 97 08 0d 00 00 85 c0
75 05 5b 41 5c 5d c3 89 c2 44 89 e6 48 c7 c7 b8 9d 17 a0 e8 5a 79 0a e1 <0f> ff
b9 01 00 00 00 83 ca ff 44 89 e6 48 89 df ff 93 28 0d 00 
[   19.936973] ---[ end trace 42d8b23074860e3d ]---

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