linux-kernel - Re: [LKP] [drm/i915] WARNING: CPU: 3 PID: 248 at drivers/gpu/drm/i915/intel_pm.c:6427 check_power_well

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Message-ID: <53D9A7AE.10308@intel.com>
Date:	Thu, 31 Jul 2014 10:19:26 +0800
From:	Aaron Lu <aaron.lu@...el.com>
To:	Daniel Vetter <daniel.vetter@...ll.ch>,
	Ville Syrjälä <ville.syrjala@...ux.intel.com>
CC:	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [LKP] [drm/i915] WARNING: CPU: 3 PID: 248 at drivers/gpu/drm/i915/intel_pm.c:6427
 check_power_well_state+0x60/0x90 [i915]()

On 07/29/2014 07:10 PM, Daniel Vetter wrote:
> On Tue, Jul 29, 2014 at 12:14 PM, Ville Syrjälä
> <ville.syrjala@...ux.intel.com> wrote:
>> On Tue, Jul 29, 2014 at 10:43:02AM +0800, Aaron Lu wrote:
>>> FYI, we noticed the below changes on
>>>
>>> git://people.freedesktop.org/~danvet/drm colder-fusion
>>
>> Does it happen on -nightly too?

Just got a new report from LKP about this with linux-next tree:

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit b832b65ef7e695eac246c6dcb00316775a7a6cac ("drm/i915: Add chv cmnlane power wells")

+-----------------+------------+------------+
|                 | fac03ecbe8 | b832b65ef7 |
+-----------------+------------+------------+
| boot_successes  | 10         | 10         |
| early-boot-hang | 1          | 1          |
+-----------------+------------+------------+


[   12.287485] sd 3:0:0:0: Attached scsi generic sg0 type 0
[   12.313542] [drm:vlv_set_power_well] *ERROR* timout setting power well state 03000000 (00000000)
[   12.313545] ------------[ cut here ]------------
[   12.313577] WARNING: CPU: 1 PID: 248 at drivers/gpu/drm/i915/intel_pm.c:6429 check_power_well_state+0x60/0x90 [i915]()
[   12.313578] state mismatch for 'dpio-common-d' (always_on 0 hw state 1 use-count 0 disable_power_well 1
[   12.313588] Modules linked in: sg sd_mod crct10dif_generic crct10dif_pclmul crc_t10dif crct10dif_common snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915(+) firewire_ohci video serio_raw parport_pc floppy(+) nuvoton_cir parport firewire_core drm_kms_helper snd_hda_intel snd_hda_controller crc_itu_t rc_core snd_hda_codec snd_hwdep i2c_i801 snd_pcm drm ata_generic ahci pcspkr pata_acpi libahci snd_timer snd libata soundcore
[   12.313590] CPU: 1 PID: 248 Comm: modprobe Not tainted 3.16.0-rc7-wl-02343-g9cca6ad #1
[   12.313590] Hardware name:                  /DQ67SW, BIOS SWQ6710H.86A.0047.2011.0222.1058 02/22/2011
[   12.313592]  0000000000000009 ffff88007faab2f8 ffffffff81836031 ffff88007faab340
[   12.313593]  ffff88007faab330 ffffffff8106d18d ffffffffa02a1860 ffffffffa02a1860
[   12.313594]  0000000001000000 ffff88007f038568 ffff88007f030000 ffff88007faab390
[   12.313594] Call Trace:
[   12.313598]  [<ffffffff81836031>] dump_stack+0x4d/0x66
[   12.313601]  [<ffffffff8106d18d>] warn_slowpath_common+0x7d/0xa0
[   12.313603]  [<ffffffff8106d1fc>] warn_slowpath_fmt+0x4c/0x50
[   12.313614]  [<ffffffffa01e585d>] ? vlv_power_well_enabled+0x7d/0xa0 [i915]
[   12.313624]  [<ffffffffa01e6160>] check_power_well_state+0x60/0x90 [i915]
[   12.313635]  [<ffffffffa01ed5c5>] intel_display_power_put+0xe5/0x160 [i915]
[   12.313653]  [<ffffffffa023752a>] intel_display_set_init_power+0x2a/0x50 [i915]
[   12.313666]  [<ffffffffa0237642>] modeset_update_crtc_power_domains+0xf2/0x150 [i915]
[   12.313678]  [<ffffffffa0237bae>] snb_modeset_global_resources+0xe/0x10 [i915]
[   12.313689]  [<ffffffffa0238ed8>] __intel_set_mode+0x5d8/0xab0 [i915]
[   12.313701]  [<ffffffffa0240d76>] intel_set_mode+0x16/0x30 [i915]
[   12.313712]  [<ffffffffa0241ccc>] intel_crtc_set_config+0x92c/0xe60 [i915]
[   12.313723]  [<ffffffffa00f51b4>] drm_mode_set_config_internal+0x64/0xf0 [drm]
[   12.313727]  [<ffffffffa01aa803>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
[   12.313730]  [<ffffffffa01aa853>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
[   12.313733]  [<ffffffffa01ac418>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
[   12.313747]  [<ffffffffa024b58a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[   12.313749]  [<ffffffff8143aa64>] fbcon_init+0x4f4/0x580
[   12.313751]  [<ffffffff814b1e48>] visual_init+0xb8/0x120
[   12.313753]  [<ffffffff814b4343>] do_bind_con_driver+0x163/0x330
[   12.313755]  [<ffffffff814b4ac4>] do_take_over_console+0x114/0x1c0
[   12.313756]  [<ffffffff814361b3>] do_fbcon_takeover+0x63/0xd0
[   12.313757]  [<ffffffff8143b50d>] fbcon_event_notify+0x68d/0x7e0
[   12.313759]  [<ffffffff8109523c>] notifier_call_chain+0x4c/0x70
[   12.313761]  [<ffffffff810955ad>] __blocking_notifier_call_chain+0x4d/0x70
[   12.313762]  [<ffffffff810955e6>] blocking_notifier_call_chain+0x16/0x20
[   12.313764]  [<ffffffff81441a4b>] fb_notifier_call_chain+0x1b/0x20
[   12.313765]  [<ffffffff81443c76>] register_framebuffer+0x1e6/0x320
[   12.313768]  [<ffffffffa01ac75e>] drm_fb_helper_initial_config+0x2fe/0x4b0 [drm_kms_helper]
[   12.313780]  [<ffffffffa02241da>] ? gen6_write32+0x6a/0x120 [i915]
[   12.313793]  [<ffffffffa024c71f>] intel_fbdev_initial_config+0x1f/0x30 [i915]
[   12.313808]  [<ffffffffa027101d>] i915_driver_load+0xfbd/0x1050 [i915]
[   12.313810]  [<ffffffff813e13d8>] ? kobject_uevent_env+0x178/0x690
[   12.313811]  [<ffffffff814e2687>] ? get_device+0x17/0x30
[   12.313813]  [<ffffffff814e7d15>] ? klist_class_dev_get+0x15/0x20
[   12.313815]  [<ffffffff8182490a>] ? klist_add_tail+0x3a/0x40
[   12.313816]  [<ffffffff814e3db9>] ? device_add+0x1f9/0x610
[   12.313823]  [<ffffffffa00f3156>] ? drm_sysfs_device_add+0xd6/0x120 [drm]
[   12.313830]  [<ffffffffa00ef77d>] drm_dev_register+0xad/0x100 [drm]
[   12.313835]  [<ffffffffa00f224f>] drm_get_pci_dev+0x8f/0x1f0 [drm]
[   12.313847]  [<ffffffffa01e059b>] i915_pci_probe+0x3b/0x60 [i915]
[   12.313850]  [<ffffffff81415ca5>] local_pci_probe+0x45/0xa0
[   12.313851]  [<ffffffff81416e35>] ? pci_match_device+0xe5/0x110
[   12.313852]  [<ffffffff81416f71>] pci_device_probe+0xd1/0x130
[   12.313854]  [<ffffffff814e6e50>] driver_probe_device+0x90/0x3c0
[   12.313855]  [<ffffffff814e7253>] __driver_attach+0x93/0xa0
[   12.313856]  [<ffffffff814e71c0>] ? __device_attach+0x40/0x40
[   12.313857]  [<ffffffff814e4ed3>] bus_for_each_dev+0x63/0xa0
[   12.313859]  [<ffffffff814e68ee>] driver_attach+0x1e/0x20
[   12.313860]  [<ffffffff814e6500>] bus_add_driver+0x180/0x250
[   12.313861]  [<ffffffff814e7a24>] driver_register+0x64/0xf0
[   12.313863]  [<ffffffff8141563c>] __pci_register_driver+0x4c/0x50
[   12.313869]  [<ffffffffa00f24ba>] drm_pci_init+0x10a/0x140 [drm]
[   12.313870]  [<ffffffffa02c8000>] ? 0xffffffffa02c7fff
[   12.313881]  [<ffffffffa02c8089>] i915_init+0x89/0x90 [i915]
[   12.313883]  [<ffffffff8100212c>] do_one_initcall+0xbc/0x1f0
[   12.313885]  [<ffffffff81190c82>] ? __vunmap+0xb2/0x100
[   12.313887]  [<ffffffff810ecf3c>] load_module+0x15fc/0x1a30
[   12.313889]  [<ffffffff810e8ad0>] ? store_uevent+0x40/0x40
[   12.313891]  [<ffffffff8119103c>] ? __vmalloc_node_range+0xbc/0x270
[   12.313893]  [<ffffffff810ed431>] SyS_init_module+0xc1/0x110
[   12.313895]  [<ffffffff8183ee29>] system_call_fastpath+0x16/0x1b
[   12.313895] ---[ end trace 6f8134c1b1b0a071 ]---
[   12.415667] [drm:vlv_set_power_well] *ERROR* timout setting power well state 00000c00 (00000000)



Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.


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