still need to send this for bionic kernel

** Also affects: linux (Ubuntu Bionic)
   Importance: Critical
     Assignee: Shrirang Bagul (shrirang-bagul)
       Status: Fix Released

** Also affects: linux-oem (Ubuntu Bionic)
   Importance: Undecided
     Assignee: Shrirang Bagul (shrirang-bagul)
       Status: Confirmed

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

** Changed in: linux-oem (Ubuntu Bionic)
       Status: Confirmed => Fix Committed

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  Fix RX fail issue on Exar USB serial driver after resume from S3/S4

Status in HWE Next:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released
Status in linux-oem source package in Xenial:
Status in linux source package in Bionic:
  Fix Released
Status in linux-oem source package in Bionic:
  Fix Committed

Bug description:
  Resolution of LP: #1645591 added support for Exar USB UART devices in
  Ubuntu Xenial kernel. However, the devices fail to RX data after
  system resumes from suspend-to-ram(S3) and suspend-to-disk(S4). This
  bug is to track the integration of the driver released by the vendor
  to fix this issue.

  Version 1B, 11/6/2015
  Fixed Bug: The conditional logic to support kernel 3.9 was incorrect(line 396 
in xr_usb_serial_common.c).
  Version 1A, 1/9/2015
  This driver will work with any USB UART function in these Exar devices:

  Exar serial devices are typically enuremated as /dev/ttyXRUSB[0-3]

  This bug is used for tracking purposes, please do not triage.

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