[Bug 80702] New: [IVB]igt pm_rps/reset reset GPU fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80702

          Priority: medium
            Bug ID: 80702
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB]igt pm_rps/reset reset GPU fail
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 101996
  --> https://bugs.freedesktop.org/attachment.cgi?id=101996&action=edit
dmesg

System Environment:
--------------------------
Platform: Ivybridge
kernel:   (drm-intel-nightly)1087d4bf01e79523898c6c31615bf0c369e0039a

Bug detailed description:
----------------------------
It happens on Ivybridge with -nightly, -queued and -nightly kernel. Run earlier
kernel, it also has this issue.
Run pm_rps/reset, the output info shows pass, but run other cases via piglit,
they will fail and show:
Test Environment check: other drm clients running!
[0/1]  Running Test(s): 0
[1/1] fail: 1

pm_rps/reset output:
IGT-Version: 1.7-g67e29a3 (x86_64) (Linux:
3.16.0-rc2_drm-intel-nightly_1087d4_20140630_debug+ x86_64)
Subtest reset: SUCCESS

lsmod
Module                  Size  Used by
iTCO_wdt                5868  0
iTCO_vendor_support     2570  1 iTCO_wdt
dm_mod                 82540  0
dcdbas                  6449  0
snd_hda_codec_hdmi     35584  1
snd_hda_codec_realtek    56868  1
snd_hda_codec_generic    45260  1 snd_hda_codec_realtek
pcspkr                  1982  0
serio_raw               4730  0
snd_hda_intel          19640  1
snd_hda_controller     19769  1 snd_hda_intel
snd_hda_codec          98988  5
snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep               6419  1 snd_hda_codec
snd_pcm                86551  4
snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
snd_timer              18765  1 snd_pcm
i2c_i801                9231  0
snd                    65260  10
snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
soundcore               6075  2 snd,snd_hda_codec
lpc_ich                13765  0
mfd_core                3294  1 lpc_ich
battery                14862  0
tpm_tis                 8457  0
tpm                    24508  1 tpm_tis
acpi_cpufreq            7229  0
i915                  814411  1
video                  14226  1 i915
button                  5467  1 i915
drm_kms_helper         38704  1 i915
drm                   264801  3 i915,drm_kms_helper

Reproduce steps:
---------------------------- 
1. ./pm_rps --run-subtest reset
2. lsmod

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