linux-kernel - [drm/i915] WARNING: CPU: 1 PID: 4249 at drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not

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Message-ID: <20141009020549.GB7968@wfg-t540p.sh.intel.com>
Date:	Thu, 9 Oct 2014 10:05:49 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Paulo Zanoni <paulo.r.zanoni@...el.com>
Cc:	Daniel Vetter <daniel.vetter@...ll.ch>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [drm/i915] WARNING: CPU: 1 PID: 4249 at
 drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not_suspended+0x43/0x50
 [i915]()

Hi Paulo,

FYI, we noticed the below changes on

commit 9a952a0d42ff089945ea3f5b3f690e45218d073f ("drm/i915: add SNB runtime PM support")

testbox/testcase/testparams: snb-drag/piglit/igt-007

97bea20794f600ae  9a952a0d42ff089945ea3f5b3f
----------------  --------------------------
       fail:runs  %reproduction    fail:runs
           |            |              |
           :1          100%           5:5     dmesg.WARNING:at_drivers/gpu/drm/i915/intel_uncore.c:assert_device_not_suspended_i915()
           :1          100%           5:5     dmesg.WARNING:at_drivers/gpu/drm/i915/intel_display.c:intel_modeset_check_state_i915()
           :1          100%           5:5     dmesg.WARNING:at_drivers/gpu/drm/i915/intel_display.c:check_crtc_state_i915()
           :1          100%           5:5     last_state.is_incomplete_run
           :1          100%           5:5     last_state.running

<3>[   89.395967] bmc-watchdog:1682 map pfn expected mapping type uncached-minus for [mem 0xbac69000-0xbac69fff], got write-back
<3>[   89.395973] bmc-watchdog:1682 map pfn expected mapping type uncached-minus for [mem 0xbac69000-0xbac69fff], got write-back
<4>[  171.693289] ------------[ cut here ]------------
<4>[  171.697936] WARNING: CPU: 1 PID: 4249 at drivers/gpu/drm/i915/intel_uncore.c:47 assert_device_not_suspended+0x43/0x50 [i915]()
<4>[  171.711305] Device suspended
<4>[  171.714192] Modules linked in: ipmi_watchdog ipmi_msghandler nfsd auth_rpcgss dm_mod fuse btrfs xor raid6_pq sg sd_mod crct10dif_generic crct10dif_pclmul crc_t10dif crct10dif_common snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ata_generic pata_acpi snd_hda_intel snd_hda_controller eeepc_wmi snd_hda_codec asus_wmi ata_piix sparse_keymap pata_via i2c_i801 rfkill pcspkr snd_hwdep libata serio_raw i915 snd_pcm snd_timer parport_pc drm_kms_helper tpm_infineon snd parport soundcore drm video wmi
<4>[  171.759962] CPU: 1 PID: 4249 Comm: pm_rpm Not tainted 3.16.0-rc1-00315-g401c58f #1
<4>[  171.767518] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 1002 04/01/2011
<4>[  171.776634]  0000000000000009 ffff88019828fb00 ffffffff81844cfd ffff88019828fb48
<4>[  171.784102]  ffff88019828fb38 ffffffff8106de6d ffff880198400000 00000000000e1100
<4>[  171.791549]  ffff880198400000 ffff880198400080 0000000000000001 ffff88019828fb98
<4>[  171.798997] Call Trace:
<4>[  171.801449]  [<ffffffff81844cfd>] dump_stack+0x4d/0x66
<4>[  171.806579]  [<ffffffff8106de6d>] warn_slowpath_common+0x7d/0xa0
<4>[  171.812580]  [<ffffffff8106dedc>] warn_slowpath_fmt+0x4c/0x50
<4>[  171.818328]  [<ffffffffa012b8c3>] assert_device_not_suspended+0x43/0x50 [i915]
<4>[  171.826159]  [<ffffffffa012d235>] gen6_read32+0x35/0x120 [i915]
<4>[  171.832078]  [<ffffffffa00f8745>] ? intel_display_power_enabled+0xc5/0xe0 [i915]
<4>[  171.839470]  [<ffffffffa0155f3f>] intel_crt_get_hw_state+0x5f/0xa0 [i915]
<4>[  171.846256]  [<ffffffffa0142fc8>] intel_connector_get_hw_state+0x28/0x30 [i915]
<4>[  171.853567]  [<ffffffffa0146da5>] intel_modeset_check_state+0x55/0x7c0 [i915]
<4>[  171.860697]  [<ffffffffa01475a5>] intel_set_mode+0x25/0x30 [i915]
<4>[  171.866786]  [<ffffffffa014861a>] intel_crtc_set_config+0xa4a/0xda0 [i915]
<4>[  171.873662]  [<ffffffffa00404f1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
<4>[  171.880884]  [<ffffffffa0044093>] drm_mode_setcrtc+0x283/0x580 [drm]
<4>[  171.887234]  [<ffffffffa0034a10>] drm_ioctl+0x1e0/0x5f0 [drm]
<4>[  171.892978]  [<ffffffffa0043e10>] ? drm_mode_setplane+0x470/0x470 [drm]
<4>[  171.899580]  [<ffffffff811e71c0>] do_vfs_ioctl+0x2f0/0x4f0
<4>[  171.905063]  [<ffffffff81385246>] ? file_has_perm+0x86/0xa0
<4>[  171.910629]  [<ffffffff811e7441>] SyS_ioctl+0x81/0xa0
<4>[  171.915679]  [<ffffffff8184d8a9>] system_call_fastpath+0x16/0x1b
<4>[  171.921677] ---[ end trace 3b79dbaad8e668ef ]---
<4>[  171.926287] ------------[ cut here ]------------


Thanks,
Fengguang

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