[Bug 73643] [HSW] I2C subtest fail in intel-gpu-tools' pm_pc8 case

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73643

--- Comment #4 from wendy.wang at intel.com ---
Retest the intel-gpu-tools' pm_pc8 test on harris beach, and got below
messages:
kernel:Linux x-hswu32 3.13.0-rc3_drm-intel-next-queued_ffb646_20140117+ 

1.  
[root at x-hswu32 tests]# ./pm_pc8 --run-subtest i2c
IGT-Version: 1.5-g5e278c8 (x86_64) (Linux:
3.13.0-rc3_drm-intel-next-queued_ffb6                                          
                                                                         
46_20140117+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Test assertion failure function test_i2c, file pm_pc8.c:636:
Last errno: 6, No such device or address
Failed assertion: i2c_edids == drm_edids
Subtest i2c: FAIL

2. Trace log for i2c subtest has been attached after executed " strace ./pm_pc8
--run-subtest i2c"

3. The full test result of pm_pc8(note: external display did not attached, so
there are some skip subtests)
[root at x-hswu32 tests]# ./pm_pc8
IGT-Version: 1.5-g5e278c8 (x86_64) (Linux:
3.13.0-rc3_drm-intel-next-queued_ffb646_20140117+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Subtest rte: SUCCESS
Subtest drm-resources-equal: SUCCESS
Subtest modeset-lpsp: SUCCESS
Test requirement not met in function modeset_subtest, file pm_pc8.c:835:
Last errno: 2, No such file or directory
Test requirement: (!(enable_one_screen_with_type(&ms_data, type)))
Subtest modeset-non-lpsp: SKIP
Subtest gem-mmap-cpu: SUCCESS
Subtest gem-mmap-gtt: SUCCESS
Subtest gem-pread: SUCCESS
Subtest gem-execbuf: SUCCESS
Test assertion failure function test_i2c, file pm_pc8.c:636:
Last errno: 6, No such device or address
Failed assertion: i2c_edids == drm_edids
Subtest i2c: FAIL
Subtest pc8-residency: SUCCESS
Subtest debugfs-read: SUCCESS
Subtest debugfs-forcewake-user: SUCCESS
Subtest sysfs-read: SUCCESS
Subtest modeset-lpsp-stress: SUCCESS
Test requirement not met in function modeset_subtest, file pm_pc8.c:835:
Last errno: 5, Input/output error
Test requirement: (!(enable_one_screen_with_type(&ms_data, type)))
Subtest modeset-non-lpsp-stress: SKIP
Subtest modeset-lpsp-stress-no-wait: SUCCESS
Test requirement not met in function modeset_subtest, file pm_pc8.c:835:
Last errno: 5, Input/output error
Test requirement: (!(enable_one_screen_with_type(&ms_data, type)))
Subtest modeset-non-lpsp-stress-no-wait: SKIP

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