[Bug 84903] [BSW] System fail to enter S3 with system hang up after load i915 driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84903

--- Comment #6 from wendy.wang at intel.com ---
Hello Ville,

I tried latest 2014_11_06 drm-intel-nightly branch kernel:
[root at x-bsw01 ~]# cat /proc/cmdline
BOOT_IMAGE=kernels//nightly_parents/2014_11_06/drm-intel-nightly/0642a51748ff46a
                                                                               
                                    205cf2a3fc45ba18cc92c9bda/bzImage_x86_64
root=/dev/sda4 hostname=x-bsw01 modules                                        
                                                                           
_path=kernels//nightly_parents/2014_11_06/drm-intel-nightly/0642a51748ff46a205cf
                                                                               
                                   
2a3fc45ba18cc92c9bda/modules_x86_64/lib/modules/3.18.0-rc3_drm-intel-nightly_064
                                                                               
                                    2a5_20141106+ acpi_rsdp=0x7b71d014
kexec_jump_back_entry=0xe84a9118

After S3 resume and call trace appear, there are some error dmesg, and cannot
do S3/reboot action again, would you pls help take a look at below  dmesg error
and attached s3dmesg.log to see if these error still due to BIOS issue? Thanks
a lot! 

[root at x-bsw01 ~]# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[    2.257951] [drm:i915_gem_init_stolen [i915]] *ERROR* conflict detected
wi                                                                             
                                       th stolen region: [0x7ce00000 -
0x7ee00000]
<4>[   54.744813] WARNING: CPU: 3 PID: 20 at
drivers/gpu/drm/i915/intel_pm.c:512                                            
                                                                        0
intel_gen6_powersave_work+0xf3/0x1049 [i915]()
<4>[   54.744848] Modules linked in: ipv6 dm_mod snd_hda_codec_hdmi iTCO_wdt
iTC                                                                            
                                        O_vendor_support snd_hda_codec_realtek
snd_hda_codec_generic serio_raw pcspkr i2                                      
                                                                             
c_i801 snd_hda_intel snd_hda_controller lpc_ich mfd_core snd_hda_codec
snd_hwdep                                                                      
                                               snd_pcm snd_timer snd soundcore
battery ac acpi_cpufreq i915 button video drm_k                                
                                                                               
    ms_helper drm cfbfillrect cfbimgblt cfbcopyarea option usb_wwan usbserial
<4>[   54.744853] CPU: 3 PID: 20 Comm: kworker/3:0 Not tainted
3.18.0-rc3_drm-in                                                              
                                                     
tel-nightly_e6b3eb_20141107+ #1270

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