[Bug 81704] [BYT Regression]igt/kms_pipe_crc_basic causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81704

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
f8bf63fdcb1f82459dae7a3f22ee5ce92f3ea727 is the first bad commit 
commit f8bf63fdcb1f82459dae7a3f22ee5ce92f3ea727 
Author: Ville Syrjälä <ville.syrjala at linux.intel.com> 
AuthorDate: Fri Jun 13 13:37:54 2014 +0300 
Commit: Daniel Vetter <daniel.vetter at ffwll.ch> 
CommitDate: Mon Jul 7 11:27:52 2014 +0200 

drm/i915: Kill duplicated cdclk readout code from i2c 

We have a slightly different way of readoing out the cdclk in 
gmbus_set_freq(). Kill that and just call .get_display_clock_speed(). 

Also need to remove the GMBUSFREQ update from intel_i2c_reset() since 
that gets called way too early. Let's do it in intel_modeset_init_hw() 
instead, and also pull the initial vlv_cdclk_freq update there from 
init_clock gating. 

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com> 
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org> 
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> 

:040000 040000 8929124f54d2ca2c16d6f179e288e22ba360b895
3e32e9591f25ba2264d38d3de38ed5230e9b1e30 M drivers 

The parents commit 7d007f40596670c8fddfae583952b091b02cf0eb doesn't causes
system hang.

But revert the bad commit base on latest commit
(f68d697eaf3278200a7fc3c8b1d95d72837b84d8), the test still causes system hang

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140804/0e3abc20/attachment-0001.html>