[Bug 88911] [ILK]igt/drv_suspend/sysfs-reader cause dmesg warn.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88911

Ding Heng <hengx.ding at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|VERIFIED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #8 from Ding Heng <hengx.ding at intel.com> ---
When test with DP monitor, I will get following dmesg every time.
dmesg -r|egrep "<[1-4]>"|grep drm
<4>[   42.560904] WARNING: CPU: 3 PID: 4124 at drivers/gpu/drm/drm_irq.c:1129
drm_wait_one_vblank+0x2c/0x131 [drm]()
<4>[   42.560928] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_idt
snd_hda_codec_generic iTCO_wdt iTCO_vendor_support dm_mod ppdev dcdbas i8k
pcspkr i2c_i801 lpc_ich mfd_core firewire_ohci snd_hda_intel snd_hda_controller
snd_hda_codec bcma snd_hwdep snd_pcm firewire_core snd_timer crc_itu_t snd
soundcore wmi battery parport_pc parport tpm_tis tpm ac acpi_cpufreq joydev
i915 button video drm_kms_helper drm
<4>[   42.560978]  [<f804d313>] ? drm_wait_one_vblank+0x2c/0x131 [drm]
<4>[   42.560993]  [<f804d313>] ? drm_wait_one_vblank+0x2c/0x131 [drm]
<4>[   42.561218]  [<f856f751>] ? i915_drm_suspend+0xb5/0x188 [i915]
<4>[   97.100640] WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/drm_irq.c:1129
drm_wait_one_vblank+0x2c/0x131 [drm]()
<4>[   97.100666] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_idt
snd_hda_codec_generic iTCO_wdt iTCO_vendor_support dm_mod ppdev dcdbas i8k
pcspkr i2c_i801 lpc_ich mfd_core firewire_ohci snd_hda_intel snd_hda_controller
snd_hda_codec bcma snd_hwdep snd_pcm firewire_core snd_timer crc_itu_t snd
soundcore wmi battery parport_pc parport tpm_tis tpm ac acpi_cpufreq joydev
i915 button video drm_kms_helper drm
<4>[   97.100700]  [<f804d313>] ? drm_wait_one_vblank+0x2c/0x131 [drm]
<4>[   97.100709]  [<f804d313>] ? drm_wait_one_vblank+0x2c/0x131 [drm]
<4>[   97.100850]  [<f856f751>] ? i915_drm_suspend+0xb5/0x188 [i915]

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