[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 #21 from liulei <lei.a.liu at intel.com> ---
(In reply to comment #20)
> Can you provide a current dmesg for this, preferably from a -nightly kernel?
 yes, I check it with drm-intel-nightly_18a766_20140513 kernel, And attach a
dmesg that bases on the kernel I said (-nightly_18a766).

> I think I have an SNB system to test this on and if not, I'll secure one.
> From what I can see in the original logs, it looks like we're having issues
> shutting down the pipe, but it's unclear why. Also when we try to train
> right after the call trace, the pipe is disabled or non-functional (the logs
> show similar failures as when the main link PHYs are disabled).


[    1.374618] ------------[ cut here ]------------
[    1.374646] WARNING: CPU: 0 PID: 1338 at
drivers/gpu/drm/i915/intel_display.c:944 intel_wait_for_pipe_off+0x12e/0x135
[i915]()
[    1.374647] pipe_off wait timed out
[    1.374649] Modules linked in: i915(+) video button drm_kms_helper drm
[    1.374651] CPU: 0 PID: 1338 Comm: udevd Not tainted
3.15.0-rc3_drm-intel-nightly_18a766_20140513+ #2566
[    1.374652] Hardware name: Dell Inc. OptiPlex 990/0DXWW6, BIOS A02
02/26/2011
[    1.374655]  00000000 c16a5021 f5bd9a3c c102cf1b f81c8e9c f4f10000 00070008
fffb716b
[    1.374657]  f5b695b4 c102cf96 00000009 f5bd9a3c f820bdd6 f5bd9a54 f81c8e9c
f820a5c8
[    1.374660]  000003b0 f820bdd6 f4f10000 f5b695b8 f5af4000 f81ce68e 00000001
f4cae224
[    1.374660] Call Trace:
[    1.374664]  [<c16a5021>] ? dump_stack+0x3e/0x4e
[    1.374667]  [<c102cf1b>] ? warn_slowpath_common+0x61/0x74
[    1.374688]  [<f81c8e9c>] ? intel_wait_for_pipe_off+0x12e/0x135 [i915]
[    1.374690]  [<c102cf96>] ? warn_slowpath_fmt+0x29/0x2d
[    1.374708]  [<f81c8e9c>] ? intel_wait_for_pipe_off+0x12e/0x135 [i915]
[    1.374727]  [<f81ce68e>] ? ironlake_crtc_disable+0x85/0x713 [i915]
[    1.374746]  [<f81d04ae>] ? __intel_set_mode+0xbe7/0xffd [i915]
[    1.374766]  [<f81d2196>] ? intel_set_mode+0x11/0x25 [i915]
[    1.374784]  [<f81d2bed>] ? intel_crtc_set_config+0x646/0x8f1 [i915]
[    1.374791]  [<f80950e0>] ? drm_mode_set_config_internal+0x39/0x8a [drm]
[    1.374793]  [<f80c7322>] ? drm_fb_helper_restore_fbdev_mode+0x7c/0x91
[drm_kms_helper]
[    1.374811]  [<f81c5fd1>] ? lpt_disable_clkout_dp+0xa1/0xa1 [i915]
[    1.374813]  [<f80c7656>] ? drm_fb_helper_set_par+0x3a/0x59 [drm_kms_helper]
[    1.374816]  [<c12bb586>] ? fbcon_init+0x2c3/0x3a3
[    1.374818]  [<c1304e1f>] ? visual_init+0x97/0xe9
[    1.374820]  [<c13063a5>] ? do_bind_con_driver+0x16e/0x275
[    1.374822]  [<c13065b8>] ? do_take_over_console+0x10c/0x134
[    1.374824]  [<c12bad4a>] ? do_fbcon_takeover+0x49/0x88
[    1.374825]  [<c16ac3db>] ? notifier_call_chain+0x20/0x42
[    1.374828]  [<c10429e0>] ? __blocking_notifier_call_chain+0x34/0x4b
[    1.374829]  [<c1042a00>] ? blocking_notifier_call_chain+0x9/0xc
[    1.374831]  [<c12c3686>] ? register_framebuffer+0x1f6/0x248
[    1.374834]  [<f80c6e22>] ? drm_fb_helper_initial_config+0x355/0x3d4
[drm_kms_helper]
[    1.374858]  [<f81f2d90>] ? i915_driver_load+0x959/0xbb7 [i915]
[    1.374860]  [<c169ed0d>] ? klist_node_init+0x3a/0x3d
[    1.374862]  [<c169ed95>] ? klist_add_tail+0x16/0x30
[    1.374864]  [<c131cd56>] ? device_add+0x45d/0x467
[    1.374866]  [<c100303a>] ? show_stack_log_lvl+0x2e/0x8a
[    1.374871]  [<f809128f>] ? drm_minor_register+0xf5/0x149 [drm]
[    1.374875]  [<f8091345>] ? drm_dev_register+0x62/0xc3 [drm]
[    1.374880]  [<f8092f01>] ? drm_get_pci_dev+0xd7/0x16a [drm]
[    1.374882]  [<c12aa8ad>] ? pci_device_probe+0x4e/0x95
[    1.374884]  [<c131e71e>] ? driver_probe_device+0x80/0x180
[    1.374886]  [<c131e862>] ? __driver_attach+0x44/0x5f
[    1.374887]  [<c131d52b>] ? bus_for_each_dev+0x37/0x61
[    1.374889]  [<c131e3e2>] ? driver_attach+0x11/0x13
[    1.374890]  [<c131e81e>] ? driver_probe_device+0x180/0x180
[    1.374892]  [<c131e11f>] ? bus_add_driver+0xad/0x167
[    1.374894]  [<c131ecb6>] ? driver_register+0x6b/0x99
[    1.374895]  [<f8224000>] ? 0xf8223fff
[    1.374896]  [<c10003de>] ? do_one_initcall+0x6d/0xe7
[    1.374897]  [<c16ac3db>] ? notifier_call_chain+0x20/0x42
[    1.374899]  [<c10429e9>] ? __blocking_notifier_call_chain+0x3d/0x4b
[    1.374901]  [<c1071bb7>] ? load_module+0x142a/0x1704
[    1.374903]  [<c16ac3b3>] ? __do_page_fault+0x46c/0x46c
[    1.374905]  [<c1071f03>] ? SyS_init_module+0x72/0x8a
[    1.374907]  [<c16adeac>] ? sysenter_do_call+0x12/0x22
[    1.374908] ---[ end trace c9b4fcba76de1ec9 ]---

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