Public bug reported:

[Impact]
PS/2 ports on PS/2 Serial add-in card do not work after S3.

[Fix]
The i8042 controller selftest fails while resuming, adding retry fix this issue.

[Test]
Verified on the target machine, the ps/2 keyboard keeps working after S3 test 
30 times.

[Regression Potential]
Low, there is a retry logic in controller selftest, but it returns directly if 
it fails to communicate with the controller. This commit make it retry 5 times 
before return fails.

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: In Progress

** Affects: linux-oem-osp1 (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: linux-oem-osp1 (Ubuntu Bionic)
     Importance: Undecided
         Status: In Progress

** Affects: linux (Ubuntu Focal)
     Importance: Undecided
         Status: In Progress


** Tags: oem-priority originate-from-1859935 somerville

** Patch added: "0001-Input-i8042-Fix-the-selftest-retry-logic.patch"
   
https://bugs.launchpad.net/bugs/1866734/+attachment/5335048/+files/0001-Input-i8042-Fix-the-selftest-retry-logic.patch

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

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

** Also affects: linux-oem-osp1 (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: linux (Ubuntu Bionic)

** No longer affects: linux-oem-osp1 (Ubuntu Focal)

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

** Changed in: linux-oem-osp1 (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux-oem-osp1 (Ubuntu)
       Status: New => Invalid

** Tags added: oem-priority originate-from-1859935 somerville

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https://bugs.launchpad.net/bugs/1866734

Title:
  All PS/2 ports on PS/2 Serial add-in bracket are not working after S3

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-osp1 package in Ubuntu:
  Invalid
Status in linux-oem-osp1 source package in Bionic:
  In Progress
Status in linux source package in Focal:
  In Progress

Bug description:
  [Impact]
  PS/2 ports on PS/2 Serial add-in card do not work after S3.

  [Fix]
  The i8042 controller selftest fails while resuming, adding retry fix this 
issue.

  [Test]
  Verified on the target machine, the ps/2 keyboard keeps working after S3 test 
30 times.

  [Regression Potential]
  Low, there is a retry logic in controller selftest, but it returns directly 
if it fails to communicate with the controller. This commit make it retry 5 
times before return fails.

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