[Bug 75693] New: [HSW]igt/pm_pc8/reg-read-ioctl fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75693

          Priority: medium
            Bug ID: 75693
                CC: intel-gfx-bugs at lists.freedesktop.org,
                    wendy.wang at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW]igt/pm_pc8/reg-read-ioctl fails
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 95002
  --> https://bugs.freedesktop.org/attachment.cgi?id=95002&action=edit
dmesg

System Environment:
--------------------------
Platform: Haswell
kernel    (drm-intel-fixes)e20ec540c7796a46107da2ec51c702fcd9af8e17

Bug detailed description:
-----------------------------
New case pm_pc8/reg-read-ioctl fails on Haswell with -fixes, -queued and
-nihglty kernel.

output:
IGT-Version: 1.5-g072d358 (x86_64) (Linux:
3.13.0-rc8_drm-intel-fixes_e20ec5_201                                          
                                                      40303+ x86_64)
Runtime PM support: 1
PC8 residency support: 0
Test assertion failure function reg_read_ioctl_subtest, file pm_pc8.c:1409:
Last errno: 5, Input/output error
Failed assertion: wait_for_suspended()
Subtest reg-read-ioctl: FAIL


Reproduce steps:
-------------------------
1. ./pm_pc8 --run-subtest reg-read-ioctl

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