Public bug reported:

[Impact]
Several issues have been fixed upstream in the hisi_sas driver:
 - Driver may configure the wrong signal attenuation setting
 - Driver may not negotiate the correct max link rate supported by the phy
 - phy must be disabled before trying to change its link rate
 - Internal abort timeout doesn't take into account link negotiation time
 - Driver returns incorrect values to upper levels

[Test Case]
Regression testing on D05 and D06 systems, which have different versions of 
this controller.

[Regression Risk]
Code changes are restricted to the hisi_sas driver, and the HisSilicon D05 and 
D06 are the only two boards Ubuntu supports that use this driver. Explicit 
testing on these two boards should mitigate the regression risk.

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: dann frazier (dannf)
         Status: In Progress

** Affects: linux (Ubuntu Bionic)
     Importance: Undecided
     Assignee: dann frazier (dannf)
         Status: In Progress

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux (Ubuntu Bionic)
     Assignee: (unassigned) => dann frazier (dannf)

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https://bugs.launchpad.net/bugs/1768974

Title:
  Several hisi_sas bug fixes

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