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[Bug 1685133] Re: Fix RX fail issue on Exar USB serial driver after resume from S3/S4

 

This bug was fixed in the package linux - 4.4.0-77.98

---------------
linux (4.4.0-77.98) xenial; urgency=low

  * linux: 4.4.0-77.98 -proposed tracker (LP: #1686040)

  * [Hyper-V][SAUCE] pci-hyperv: Use only 16 bit integer for PCI domain
    (LP: #1684971)
    - SAUCE: pci-hyperv: Use only 16 bit integer for PCI domain

  * Upgrade Redpine WLAN/BT driver to ver. 1.2.RC4 (LP: #1669672)
    - SAUCE: sdhci: use PCI ID to identify Dell IoT gateways
    - SAUCE: Redpine: Upgrade to ver. 1.2.RC4
    - [Config] Update CONFIG_VEN_RSI_* configs
    - SAUCE: Redpine: add copyright to kernel packages

  * Fix RX fail issue on Exar USB serial driver after resume from S3/S4
    (LP: #1685133)
    - SAUCE: xr-usb-serial: Update driver for Exar USB serial ports

  * Miscellaneous Ubuntu changes
    - [Config] updating configs to match redpine driver changes

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Tue, 25 Apr
2017 19:32:01 +0200

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1685133

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

Status in HWE Next:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Xenial:
  Fix Released

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.

  Changelog:
      
  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:
          XR21V1410/1412/1414
          XR21B1411
          XR21B1420/1422/1424
          XR22801/802/804

  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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