[Bug 90209] New: [BDW] igt/igt/kms_universal_plane subcase disable-primary-vs-flip-pipe-A causes WARNING: CPU: 0 PID: 29343 at drivers/gpu/drm/i915/intel_display.c:1359 hsw_disable_ips+0x34/0x162 [i915]()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90209

            Bug ID: 90209
           Summary: [BDW] igt/igt/kms_universal_plane subcase
                    disable-primary-vs-flip-pipe-A causes WARNING: CPU: 0
                    PID: 29343 at
                    drivers/gpu/drm/i915/intel_display.c:1359
                    hsw_disable_ips+0x34/0x162 [i915]()
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115390
  --> https://bugs.freedesktop.org/attachment.cgi?id=115390&action=edit
dmesg info

==System Environment==       
-----------------------------------------------------
Regression: not sure
Non-working platforms: BDW

==Kernel==
--------------------------------------------------
commit 92bb36c80e561f82b1f4b63cc269a71833137841
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Fri Apr 24 00:26:53 2015 +0300

    drm-intel-nightly: 2015y-04m-23d-21h-26m-24s UTC integration manifest


==Bug detailed description==
--------------------------------------------------
igt/igt/kms_universal_plane subcase disable-primary-vs-flip-pipe-A causes
WARNING: CPU: 0 PID: 29343 at drivers/gpu/drm/i915/intel_display.c:1359
hsw_disable_ips+0x34/0x162[i915]()

==Output==
--------------------------------------
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./kms_universal_plane --run-subtest disable-primary-vs-flip-pipe-A
IGT-Version: 1.10-gfc69bb0 (x86_64) (Linux:
4.0.0_drm-intel-nightly_92bb36_20150424+ x86_64)
Subtest disable-primary-vs-flip-pipe-A: SUCCESS (0.461s)

==Output dmesg info==
-------------------------------------------------------------------
[ 9291.963111] ------------[ cut here ]------------
[ 9291.963122] WARNING: CPU: 0 PID: 29343 at
drivers/gpu/drm/i915/intel_display.c:1359 hsw_disable_ips+0x34/0x162 [i915]()
[ 9291.963124] plane A assertion failure (expected on, current off)
[ 9291.963125] Modules linked in: ipv6 dm_mod iTCO_wdt iTCO_vendor_support
ppdev snd_hda_codec_hdmi pcspkr i2c_i801 snd_hda_intel snd_hda_controller
snd_hda_codec snd_hda_core snd_hwdep snd_pcm lpc_ich snd_timer mfd_core snd
soundcore battery parport_pc parport ac acpi_cpufreq i915 button video
drm_kms_helper drm
[ 9291.963138] CPU: 0 PID: 29343 Comm: kms_universal_p Tainted: G        W     
 4.0.0_drm-intel-nightly_92bb36_20150424+ #38
[ 9291.963139]  0000000000000000 0000000000000009 ffffffff81795847
ffff8800028e7de8
[ 9291.963141]  ffffffff8103bd5a ffff8801445a6400 ffffffffa00d17d9
ffff8800028e7e08
[ 9291.963143]  ffff880002d20000 ffff880144bc9000 ffff8800a7e14800
ffff880002d20000
[ 9291.963145] Call Trace:
[ 9291.963148]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
[ 9291.963150]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[ 9291.963161]  [<ffffffffa00d17d9>] ? hsw_disable_ips+0x34/0x162 [i915]
[ 9291.963164]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[ 9291.963175]  [<ffffffffa00d17d9>] ? hsw_disable_ips+0x34/0x162 [i915]
[ 9291.963185]  [<ffffffffa009115f>] ? display_crc_ctl_write+0x5d9/0x907 [i915]
[ 9291.963188]  [<ffffffff8111100a>] ? __sb_start_write+0xa5/0xd5
[ 9291.963190]  [<ffffffff8110f29d>] ? vfs_write+0xb0/0x186
[ 9291.963193]  [<ffffffff8110fc0c>] ? SyS_write+0x41/0x84
[ 9291.963195]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
[ 9291.963196] ---[ end trace ddf8f1b5d46177e9 ]---
==Reproduce steps==
----------------------------
1, ./kms_universal_plane --run-subtest disable-primary-vs-flip-pipe-A

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