[Bug 67462] [SNB DP] WARNING: pipe_off wait timed out in ironlake_crtc_disable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67462

--- Comment #24 from liulei <lei.a.liu at intel.com> ---
(In reply to comment #23)
> Please test this patch here, should apply to any recent-ish upstream:
> 
> http://patchwork.freedesktop.org/patch/24864/
This patch fixes problem "pipe_off wait timed out".But I found this Call Trace.

[    1.423773] usb 2-1: new high-speed USB device number 2 using ehci-pci
[    1.490861] ------------[ cut here ]------------
[    1.490901] WARNING: CPU: 0 PID: 1262 at
drivers/gpu/drm/i915/intel_display.c:860 ironlake_crtc_disable+0x86/0x7f2
[i915]()
[    1.490901] pipe_off wait timed out
[    1.490904] Modules linked in: i915(+) video button drm_kms_helper drm
[    1.490906] CPU: 0 PID: 1262 Comm: udevd Not tainted
3.14.0_kcloud_dde711_20140523+ #51
[    1.490907] Hardware name:                  /DQ67SW, BIOS
SWQ6710H.86A.0060.2011.1220.1805 12/20/2011
[    1.490909]  0000000000000000 ffffffff816fd068 ffff88023027b5e0
ffffffff81033e44
[    1.490910]  ffffffffa009b4ed ffff8800b8658000 ffff88023027b630
ffff880234af0000
[    1.490911]  ffff88022f909000 ffffffff81033ea0 ffffffffa00e0245
0000000000000018
[    1.490912] Call Trace:
[    1.490916]  [<ffffffff816fd068>] ? dump_stack+0x41/0x51
[    1.490918]  [<ffffffff81033e44>] ? warn_slowpath_common+0x6f/0x84
[    1.490939]  [<ffffffffa009b4ed>] ? ironlake_crtc_disable+0x86/0x7f2 [i915]
[    1.490940]  [<ffffffff81033ea0>] ? warn_slowpath_fmt+0x47/0x49
[    1.490957]  [<ffffffffa009b4ed>] ? ironlake_crtc_disable+0x86/0x7f2 [i915]
[    1.490974]  [<ffffffffa00926ee>] ? intel_dump_pipe_config+0x17d/0x311
[i915]
[    1.490991]  [<ffffffffa009d13c>] ? __intel_set_mode+0x862/0x118c [i915]
[    1.491008]  [<ffffffffa009f682>] ? intel_set_mode+0xb/0x22 [i915]
[    1.491024]  [<ffffffffa00a0476>] ? intel_crtc_set_config+0x95c/0x9f6 [i915]
[    1.491030]  [<ffffffffa000be6c>] ? drm_mode_set_config_internal+0x48/0xc0
[drm]
[    1.491033]  [<ffffffffa00484cf>] ?
drm_fb_helper_restore_fbdev_mode+0x90/0xa5 [drm_kms_helper]
[    1.491035]  [<ffffffffa0049d7f>] ? drm_fb_helper_set_par+0x42/0x69
[drm_kms_helper]
[    1.491037]  [<ffffffff8130717b>] ? fbcon_init+0x2fa/0x400
[    1.491040]  [<ffffffff81352b89>] ? visual_init+0xaf/0x102
[    1.491042]  [<ffffffff8135448a>] ? do_bind_con_driver+0x19e/0x2c2
[    1.491044]  [<ffffffff81354a4b>] ? do_take_over_console+0x125/0x152
[    1.491046]  [<ffffffff81306885>] ? do_fbcon_takeover+0x4e/0x8e
[    1.491047]  [<ffffffff817053ec>] ? notifier_call_chain+0x32/0x52
[    1.491049]  [<ffffffff8104cb4e>] ? __blocking_notifier_call_chain+0x43/0x5b
[    1.491051]  [<ffffffff812fea77>] ? register_framebuffer+0x265/0x29b
[    1.491053]  [<ffffffffa004996f>] ? drm_fb_helper_initial_config+0x3b9/0x45f
[drm_kms_helper]
[    1.491070]  [<ffffffffa008cc97>] ? gen6_write32+0x22/0x6b [i915]
[    1.491086]  [<ffffffffa008cc97>] ? gen6_write32+0x22/0x6b [i915]
[    1.491107]  [<ffffffffa00c36cd>] ? i915_driver_load+0xb7b/0xd70 [i915]
[    1.491109]  [<ffffffff810428e1>] ? call_usermodehelper_exec+0xcd/0xfb
[    1.491111]  [<ffffffff812cb426>] ? kobject_uevent_env+0x3de/0x416
[    1.491113]  [<ffffffff8136cac9>] ? get_device+0xe/0x16
[    1.491115]  [<ffffffff816f5519>] ? klist_add_tail+0x1b/0x3c
[    1.491116]  [<ffffffff8136de3b>] ? device_add+0x4ec/0x4fd
[    1.491122]  [<ffffffffa000744d>] ? drm_dev_register+0x72/0xe3 [drm]
[    1.491127]  [<ffffffffa00093ae>] ? drm_get_pci_dev+0xfc/0x1ba [drm]
[    1.491129]  [<ffffffff812eea09>] ? local_pci_probe+0x34/0x77
[    1.491130]  [<ffffffff812eeb0d>] ? pci_device_probe+0xc1/0xe5
[    1.491132]  [<ffffffff8136feaa>] ? driver_probe_device+0x92/0x1b3
[    1.491134]  [<ffffffff8137004f>] ? __driver_attach+0x53/0x73
[    1.491135]  [<ffffffff8136fffc>] ? __device_attach+0x31/0x31
[    1.491137]  [<ffffffff8136e796>] ? bus_for_each_dev+0x6e/0x78
[    1.491138]  [<ffffffff8136f76e>] ? bus_add_driver+0xfb/0x1c4
[    1.491140]  [<ffffffff81370545>] ? driver_register+0x83/0xbb
[    1.491141]  [<ffffffffa00fc000>] ? 0xffffffffa00fbfff
[    1.491142]  [<ffffffff8100028f>] ? do_one_initcall+0x78/0xf9
[    1.491144]  [<ffffffff817053ec>] ? notifier_call_chain+0x32/0x52
[    1.491145]  [<ffffffff8104cb59>] ? __blocking_notifier_call_chain+0x4e/0x5b
[    1.491148]  [<ffffffff8107dacd>] ? load_module+0x1969/0x1aef
[    1.491149]  [<ffffffff8107b1dd>] ? store_uevent+0x30/0x30
[    1.491152]  [<ffffffff8107dce1>] ? SyS_init_module+0x8e/0x99
[    1.491153]  [<ffffffff817074e2>] ? system_call_fastpath+0x16/0x1b
[    1.491154] ---[ end trace 313cd642c53a8e83 ]---

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