[Bug 80703] [BSW]The infomation read from RC6 status register is wrong

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80703

--- Comment #7 from Guo Jinxian <jinxianx.guo at intel.com> ---
Created attachment 102467
  --> https://bugs.freedesktop.org/attachment.cgi?id=102467&action=edit
dmesg

(In reply to comment #6)
> Created attachment 102446 [details] [review]
> drm/i915/chv: calculate rc6 residency correctly
> 
> Updated patch, please test with pm_rc6_residency

The test was passed with this patch.
Output:
[root at x-bsw01 tests]# ./pm_rc6_residency
IGT-Version: 1.7-g8d60b82 (x86_64) (Linux: 3.16.0-rc4_kcloud_7df4e1_20140709+
x86_64)
Subtest rc6-residency-check: SUCCESS
This machine doesn't support rc6pp
This machine doesn't support rc6p
The residency counter: 1.000000
This machine entry rc6 state.
Subtest rc6-residency-counter: SUCCESS

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