[Bug 81202] New: [BSW]CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()" after boot

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Jul 10 20:27:38 PDT 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=81202

          Priority: medium
            Bug ID: 81202
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BSW]CallTrace "WARNING: CPU: 0 PID: 1237 at
                    drivers/gpu/drm/i915/intel_pm.c:5955
                    check_power_well_state+0x69/0x6f [i915]()" after boot
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 102587
  --> https://bugs.freedesktop.org/attachment.cgi?id=102587&action=edit
dmesg

==System Environment==
--------------------------
Regression: No. 

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 16025dad8e9964a5810385f755d43f1c48d6fdcc(fails)
    drm-intel-nightly: 2014y-07m-09d-14h-17m-14s integration manifest
origin/drm-intel-next-queued: d101c8fe9bda6578ae72d6021415cfaad2b422f0(fails)
    drm/i915: remove i915_rstdby_delays debugfs entry
origin/drm-intel-fixes: 01527b3127997ef6370d5ad4fa25d96847fbf12a(fails)
    drm/i915/vlv: T12 eDP panel timing enforcement during reboot

==Bug detailed description==
CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955
check_power_well_state+0x69/0x6f [i915]()" after boot

Dmesg shows:
[    6.992821] ------------[ cut here ]------------
[    6.992867] WARNING: CPU: 0 PID: 1237 at
drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()
[    6.992870] state mismatch for 'dpio-tx-c-23' (always_on 0 hw state 0
use-count 4 disable_power_well 1
[    6.992876] Modules linked in: option usb_wwan usbserial i915(+) video
button drm_kms_helper drm
[    6.992880] CPU: 0 PID: 1237 Comm: udevd Tainted: G        W    
3.16.0-rc3_drm-intel-fixes_92ae62_20140711+ #414
[    6.992884]  0000000000000000 0000000000000009 ffffffff817803ed
ffff8800733af4b8
[    6.992887]  ffffffff8103986c 0000000000000000 ffffffffa0069e3d
0000000000000000
[    6.992890]  ffffffffa00fc1f0 ffffffffa00fc1f0 0000000000000005
0000000000800000
[    6.992891] Call Trace:
[    6.992895]  [<ffffffff817803ed>] ? dump_stack+0x41/0x51
[    6.992899]  [<ffffffff8103986c>] ? warn_slowpath_common+0x78/0x90
[    6.992944]  [<ffffffffa0069e3d>] ? check_power_well_state+0x69/0x6f [i915]
[    6.992949]  [<ffffffff8103991c>] ? warn_slowpath_fmt+0x45/0x4a
[    6.992993]  [<ffffffffa0068645>] ? vlv_power_well_enabled+0x85/0x91 [i915]
[    6.993049]  [<ffffffffa0069e3d>] ? check_power_well_state+0x69/0x6f [i915]
[    6.993096]  [<ffffffffa006e3f5>] ? intel_display_power_put+0xc8/0xfc [i915]
[    6.993155]  [<ffffffffa00a90db>] ? intel_display_set_init_power+0x28/0x33
[i915]
[    6.993214]  [<ffffffffa00aa9fa>] ? __intel_set_mode+0xf8a/0x11d4 [i915]
[    6.993217]  [<ffffffff8177d3cc>] ? printk+0x4f/0x54
[    6.993277]  [<ffffffffa00aca4f>] ? intel_set_mode+0xd/0x27 [i915]
[    6.993335]  [<ffffffffa00ad635>] ? intel_crtc_set_config+0x70e/0xa13 [i915]
[    6.993349]  [<ffffffffa000c038>] ? drm_mode_set_config_internal+0x48/0xad
[drm]
[    6.993355]  [<ffffffffa004bf94>] ? restore_fbdev_mode+0x8f/0xa8
[drm_kms_helper]
[    6.993361]  [<ffffffffa004bfca>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x1d/0x34 [drm_kms_helper]
[    6.993366]  [<ffffffffa004d1e2>] ? drm_fb_helper_set_par+0x39/0x58
[drm_kms_helper]
[    6.993370]  [<ffffffff813650e9>] ? fbcon_init+0x2ff/0x408
[    6.993374]  [<ffffffff813b94a5>] ? visual_init+0xaf/0x102
[    6.993378]  [<ffffffff813bac42>] ? do_bind_con_driver+0x1a1/0x2ca
[    6.993382]  [<ffffffff813bae9d>] ? do_take_over_console+0x132/0x162
[    6.993386]  [<ffffffff813647d6>] ? do_fbcon_takeover+0x53/0x96
[    6.993389]  [<ffffffff81055751>] ? notifier_call_chain+0x2e/0x59
[    6.993393]  [<ffffffff81055890>] ? __blocking_notifier_call_chain+0x43/0x5d
[    6.993397]  [<ffffffff8136e39d>] ? register_framebuffer+0x23f/0x29d
[    6.993403]  [<ffffffffa004cab8>] ? drm_fb_helper_initial_config+0x359/0x3ff
[drm_kms_helper]
[    6.993460]  [<ffffffffa0098f6f>] ? gen8_write32+0x77/0xf2 [i915]
[    6.993516]  [<ffffffffa0098ef8>] ? gen8_write64+0xef/0xef [i915]
[    6.993579]  [<ffffffffa00d34b9>] ? i915_driver_load+0xc3a/0xe67 [i915]
[    6.993585]  [<ffffffff81779795>] ? klist_add_tail+0x1d/0x40
[    6.993599]  [<ffffffffa000764f>] ? drm_dev_register+0x74/0xe7 [drm]
[    6.993603]  [<ffffffff8137f382>] ? acpi_pci_irq_enable+0x11c/0x12f
[    6.993615]  [<ffffffffa00097de>] ? drm_get_pci_dev+0xf4/0x1af [drm]
[    6.993619]  [<ffffffff81350d6a>] ? local_pci_probe+0x36/0x7c
[    6.993622]  [<ffffffff8132a231>] ? ida_get_new_above+0x171/0x18b
[    6.993626]  [<ffffffff8135100e>] ? pci_device_probe+0xcc/0xf0
[    6.993630]  [<ffffffff813d8b16>] ? driver_probe_device+0x9d/0x1d5
[    6.993635]  [<ffffffff813d8c4e>] ? driver_probe_device+0x1d5/0x1d5
[    6.993638]  [<ffffffff813d8ca1>] ? __driver_attach+0x53/0x73
[    6.993642]  [<ffffffff813d740e>] ? bus_for_each_dev+0x4e/0x7f
[    6.993646]  [<ffffffff813d83c4>] ? bus_add_driver+0xe7/0x1cc
[    6.993650]  [<ffffffff813d92ea>] ? driver_register+0x82/0xb5
[    6.993653]  [<ffffffffa0113000>] ? 0xffffffffa0112fff
[    6.993657]  [<ffffffff81000301>] ? do_one_initcall+0xe3/0x176
[    6.993661]  [<ffffffff810f5c8e>] ? __vunmap+0x8c/0xc4
[    6.993665]  [<ffffffff8108bf75>] ? load_module+0x1821/0x1b04
[    6.993669]  [<ffffffff81089b95>] ? module_unload_free+0xca/0xca
[    6.993674]  [<ffffffff8108c2e8>] ? SyS_init_module+0x90/0x9b
[    6.993677]  [<ffffffff81785f92>] ? system_call_fastpath+0x16/0x1b


==Reproduce steps==
---------------------------- 
1. boot
2. dmesg |grep Call Trace

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