[Bug 87086] [BSW]S3 causes "WARNING: CPU: 1 PID: 4478 at drivers/gpu/drm/i915/i915_drv.c:1185 vlv_force_gfx_clock+0x41/0x1eb [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87086

--- Comment #8 from Ding Heng <hengx.ding at intel.com> ---
Created attachment 114068
  --> https://bugs.freedesktop.org/attachment.cgi?id=114068&action=edit
dmesg after patch

Latest nightly branch had fixed the boot issue. I installed your patch in
comment 6 on latest nightly branch. Still some warning in dmesg.

root at x-bsw01:~# dmesg -r | egrep "<[1-4]>" |grep drm
<4>[  338.174625] WARNING: CPU: 2 PID: 24 at
drivers/gpu/drm/i915/i915_gem.c:4626 i915_gem_suspend+0xbb/0xd3 [i915]()
<4>[  338.174734] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic serio_raw
pcspkr snd_hda_intel snd_hda_controller i2c_i801 snd_hda_codec snd_hwdep
snd_pcm snd_timer lpc_ich mfd_core snd soundcore battery joydev ac acpi_cpufreq
i915 button video dr _kms_helper drm
<4>[  338.175191]  [<ffffffffa0079784>] ? i915_drm_suspend+0x59/0x1a1 [i915]

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