[Regression 3.10.0+] i915 resume problem: pipe state doesn't match!

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Hi everybody!

During resume from S3 there is a pipe state problem

Reproducibility: high (3 of 3 test resumes)

Hardware: Aopen i915GMm-hfs, Pentium-M, opensuse 12.3,
kernel 3.10.0+, git 496322bc91e35007ed754184dcd447a02b6dd685

Three slightly differing trace attached.

cu,
   Knut


-------------- next part --------------
[   99.485475] [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.control (expected 0, found 8)
[   99.485490] ------------[ cut here ]------------
[   99.485516] WARNING: CPU: 0 PID: 1276 at drivers/gpu/drm/i915/intel_display.c:8287 check_crtc_state+0x62b/0x65c()
[   99.485526] pipe state doesn't match!
[   99.485535] Modules linked in: ipv6 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_rme96 snd_pcm snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc
[   99.485610] CPU: 0 PID: 1276 Comm: kworker/0:6 Tainted: G        W    3.10.0-main+ #14
[   99.485622] Hardware name:    /i915GMm-HFS, BIOS 6.00 PG 11/04/2005
[   99.485640] Workqueue: events output_poll_execute
[   99.485653]  00000006 c06f10ea efded9cc c052e356 efded9e4 c012a137 c03bde50 f60e3000
[   99.485694]  00000000 f6218000 efded9fc c012a1c1 00000009 efded9f4 c06f10ea efdeda10
[   99.485736]  efdedc60 c03bde50 c06f047a 0000205f c06f10ea efdeda01 c0533e4d f635af44
[   99.485777] Call Trace:
[   99.485802]  [<c052e356>] dump_stack+0x16/0x18
[   99.485823]  [<c012a137>] warn_slowpath_common+0x5a/0x71
[   99.485842]  [<c03bde50>] ? check_crtc_state+0x62b/0x65c
[   99.485862]  [<c012a1c1>] warn_slowpath_fmt+0x2b/0x2f
[   99.485881]  [<c03bde50>] check_crtc_state+0x62b/0x65c
[   99.485902]  [<c0533e4d>] ? _raw_spin_unlock_irq+0x32/0x48
[   99.485956]  [<c03c75b4>] intel_modeset_check_state+0x30c/0x55f
[   99.485979]  [<c03c7882>] intel_set_mode+0x26/0x2f
[   99.485999]  [<c03c8619>] intel_get_load_detect_pipe+0x2b4/0x308
[   99.486021]  [<c0531be1>] ? __mutex_unlock_slowpath+0xf4/0x111
[   99.486044]  [<c0168a50>] ? trace_hardirqs_on_caller+0x12e/0x180
[   99.486063]  [<c0168aad>] ? trace_hardirqs_on+0xb/0xd
[   99.486084]  [<c03e11d8>] intel_tv_detect+0xd1/0x3ea
[   99.486118]  [<c038a00e>] drm_helper_probe_single_connector_modes+0xa0/0x270
[   99.486140]  [<c0387bf2>] drm_fb_helper_probe_connector_modes+0x39/0x4c
[   99.486158]  [<c0531ad2>] ? mutex_lock_nested+0x27d/0x298
[   99.486179]  [<c03893a4>] drm_fb_helper_hotplug_event+0x64/0x9a
[   99.486199]  [<c03e0641>] intel_fb_output_poll_changed+0x19/0x1b
[   99.486218]  [<c0389871>] drm_kms_helper_hotplug_event+0x21/0x24
[   99.486237]  [<c0389989>] output_poll_execute+0x115/0x139
[   99.486260]  [<c01402e0>] process_one_work+0x22a/0x3ec
[   99.486279]  [<c01409b4>] ? worker_thread+0x2c/0x28a
[   99.486301]  [<c0140b2b>] worker_thread+0x1a3/0x28a
[   99.486322]  [<c0140988>] ? manage_workers.isra.22+0x19a/0x19a
[   99.486341]  [<c0144df9>] kthread+0x8e/0x93
[   99.486368]  [<c05394b7>] ret_from_kernel_thread+0x1b/0x28
[   99.486387]  [<c0144d6b>] ? __init_kthread_worker+0x47/0x47
[   99.486402] ---[ end trace b2b34c622ca1d660 ]---


[ 1295.520126] PM: Basic memory bitmaps freed
[ 1298.525937] [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.control (expected 0, found 8)
[ 1298.525952] ------------[ cut here ]------------
[ 1298.525977] WARNING: CPU: 0 PID: 1308 at drivers/gpu/drm/i915/intel_display.c:8287 check_crtc_state+0x62b/0x65c()
[ 1298.525987] pipe state doesn't match!
[ 1298.525996] Modules linked in: ipv6 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_rme96 snd_pcm snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc
[ 1298.526072] CPU: 0 PID: 1308 Comm: kworker/0:2 Tainted: G        W    3.10.0-main+ #14
[ 1298.526084] Hardware name:    /i915GMm-HFS, BIOS 6.00 PG 11/04/2005
[ 1298.526102] Workqueue: events output_poll_execute
[ 1298.526115]  00000006 c06f10ea f5a279cc c052e356 f5a279e4 c012a137 c03bde50 f60e3000
[ 1298.526157]  00000000 f6218000 f5a279fc c012a1c1 00000009 f5a279f4 c06f10ea f5a27a10
[ 1298.526199]  f5a27c60 c03bde50 c06f047a 0000205f c06f10ea f5a27a01 00000101 f635af44
[ 1298.526241] Call Trace:
[ 1298.526267]  [<c052e356>] dump_stack+0x16/0x18
[ 1298.526288]  [<c012a137>] warn_slowpath_common+0x5a/0x71
[ 1298.526306]  [<c03bde50>] ? check_crtc_state+0x62b/0x65c
[ 1298.526326]  [<c012a1c1>] warn_slowpath_fmt+0x2b/0x2f
[ 1298.526345]  [<c03bde50>] check_crtc_state+0x62b/0x65c
[ 1298.526368]  [<c0130524>] ? __do_softirq+0x165/0x207
[ 1298.526422]  [<c03c75b4>] intel_modeset_check_state+0x30c/0x55f
[ 1298.526444]  [<c03c7882>] intel_set_mode+0x26/0x2f
[ 1298.526464]  [<c03c8619>] intel_get_load_detect_pipe+0x2b4/0x308
[ 1298.526487]  [<c0531be1>] ? __mutex_unlock_slowpath+0xf4/0x111
[ 1298.526509]  [<c0168a50>] ? trace_hardirqs_on_caller+0x12e/0x180
[ 1298.526529]  [<c0168aad>] ? trace_hardirqs_on+0xb/0xd
[ 1298.526550]  [<c03e11d8>] intel_tv_detect+0xd1/0x3ea
[ 1298.526584]  [<c038a00e>] drm_helper_probe_single_connector_modes+0xa0/0x270
[ 1298.526606]  [<c0387bf2>] drm_fb_helper_probe_connector_modes+0x39/0x4c
[ 1298.526624]  [<c0531ad2>] ? mutex_lock_nested+0x27d/0x298
[ 1298.526645]  [<c03893a4>] drm_fb_helper_hotplug_event+0x64/0x9a
[ 1298.526665]  [<c03e0641>] intel_fb_output_poll_changed+0x19/0x1b
[ 1298.526684]  [<c0389871>] drm_kms_helper_hotplug_event+0x21/0x24
[ 1298.526703]  [<c0389989>] output_poll_execute+0x115/0x139
[ 1298.526726]  [<c01402e0>] process_one_work+0x22a/0x3ec
[ 1298.526745]  [<c01409b4>] ? worker_thread+0x2c/0x28a
[ 1298.526767]  [<c0140b2b>] worker_thread+0x1a3/0x28a
[ 1298.526788]  [<c0140988>] ? manage_workers.isra.22+0x19a/0x19a
[ 1298.526807]  [<c0144df9>] kthread+0x8e/0x93
[ 1298.526835]  [<c05394b7>] ret_from_kernel_thread+0x1b/0x28
[ 1298.526853]  [<c0144d6b>] ? __init_kthread_worker+0x47/0x47
[ 1298.526868] ---[ end trace cdf7452bb4a6b6ed ]---


[  746.165742] [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.control (expected 0, found 8)
[  746.165747] ------------[ cut here ]------------
[  746.165766] WARNING: CPU: 0 PID: 1467 at drivers/gpu/drm/i915/intel_display.c:8287 check_crtc_state+0x62b/0x65c()
[  746.165770] pipe state doesn't match!
[  746.165818] Modules linked in: ipv6 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_rme96 snd_pcm snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc
[  746.165831] CPU: 0 PID: 1467 Comm: kworker/0:5 Tainted: G        W    3.10.0-main+ #14
[  746.165836] Hardware name:    /i915GMm-HFS, BIOS 6.00 PG 11/04/2005
[  746.165852] Workqueue: events output_poll_execute
[  746.165879]  00000006 c06f10ea ec5819cc c052e356 ec5819e4 c012a137 c03bde50 f60e3000
[  746.165905]  00000000 f6218000 ec5819fc c012a1c1 00000009 ec5819f4 c06f10ea ec581a10
[  746.165931]  ec581c60 c03bde50 c06f047a 0000205f c06f10ea 00000001 00000002 f635af44
[  746.165934] Call Trace:
[  746.165953]  [<c052e356>] dump_stack+0x16/0x18
[  746.165967]  [<c012a137>] warn_slowpath_common+0x5a/0x71
[  746.165979]  [<c03bde50>] ? check_crtc_state+0x62b/0x65c
[  746.165991]  [<c012a1c1>] warn_slowpath_fmt+0x2b/0x2f
[  746.166004]  [<c03bde50>] check_crtc_state+0x62b/0x65c
[  746.166022]  [<c014ca80>] ? finish_task_switch.constprop.80+0x2e/0xa3
[  746.166068]  [<c03c75b4>] intel_modeset_check_state+0x30c/0x55f
[  746.166084]  [<c03c7882>] intel_set_mode+0x26/0x2f
[  746.166097]  [<c03c8619>] intel_get_load_detect_pipe+0x2b4/0x308
[  746.166113]  [<c0531be1>] ? __mutex_unlock_slowpath+0xf4/0x111
[  746.166128]  [<c0168a50>] ? trace_hardirqs_on_caller+0x12e/0x180
[  746.166140]  [<c0168aad>] ? trace_hardirqs_on+0xb/0xd
[  746.166155]  [<c03e11d8>] intel_tv_detect+0xd1/0x3ea
[  746.166182]  [<c038a00e>] drm_helper_probe_single_connector_modes+0xa0/0x270
[  746.166197]  [<c0387bf2>] drm_fb_helper_probe_connector_modes+0x39/0x4c
[  746.166208]  [<c0531ad2>] ? mutex_lock_nested+0x27d/0x298
[  746.166221]  [<c03893a4>] drm_fb_helper_hotplug_event+0x64/0x9a
[  746.166234]  [<c03e0641>] intel_fb_output_poll_changed+0x19/0x1b
[  746.166247]  [<c0389871>] drm_kms_helper_hotplug_event+0x21/0x24
[  746.166258]  [<c0389989>] output_poll_execute+0x115/0x139
[  746.166275]  [<c01402e0>] process_one_work+0x22a/0x3ec
[  746.166286]  [<c01409b4>] ? worker_thread+0x2c/0x28a
[  746.166301]  [<c0140b2b>] worker_thread+0x1a3/0x28a
[  746.166316]  [<c0140988>] ? manage_workers.isra.22+0x19a/0x19a
[  746.166328]  [<c0144df9>] kthread+0x8e/0x93
[  746.166349]  [<c05394b7>] ret_from_kernel_thread+0x1b/0x28
[  746.166360]  [<c0144d6b>] ? __init_kthread_worker+0x47/0x47
[  746.166370] ---[ end trace b2b34c622ca1d661 ]---


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