[Bug 73037] [BYT]igt/many kms_flip subcases randomly fail with *ERROR* failed to train DP, aborting

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73037

--- Comment #28 from lu hua <huax.lu at intel.com> ---
(In reply to comment #27)
> Interesting. That's similar behavior to what I saw when the PHYs weren't
> coming up on VLV. I'd like to see the results of the two patches I've
> attached. The first one is an updated, cleaned up version of the patch I
> sent previously. The second one changes check_link_status() such that we
> don't try and configure the link when it's in a disconnected state.
> 
> Please apply, test and post the results.
> 
> -T

Apply these 2 patches, run ./kms_flip  --run-subtest
absolute-wf_vblank-interruptible crash due to bug 81320. 

./kms_flip  --run-subtest absolute-wf_vblank-interruptible
output:
IGT-Version: 1.7-g428060c (x86_64) (Linux: 3.16.0-rc5_kcloud_1f014f_20140717+
x86_64)
Using monotonic timestamps
Test assertion failure function igt_install_exit_handler, file igt_core.c:1086:
Failed assertion: exit_handler_count < MAX_EXIT_HANDLERS
kms_flip: igt_core.c:657: igt_fail: Assertion `!test_with_subtests ||
in_fixture' failed.
Aborted

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