Driver for Exar USB UART

This bug was fixed in the package linux - 4.9.0-11.12

---------------
linux (4.9.0-11.12) zesty; urgency=low

  * Miscellaneous Ubuntu changes
    - UBUNTU: SAUCE: Add '-fno-pie -no-pie' to cflags for x86 selftests
    - UBUNTU: SAUCE: (no-up) aufs: for v4.9-rc1, support setattr_prepare()

  [ Upstream Kernel Changes ]

  * rebase to v4.9

 -- Tim Gardner <email address hidden> Mon, 12 Dec 2016 06:40:40 -0700

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-yakkety' to 'verification-done-yakkety'. If the problem still exists, change the tag 'verification-needed-yakkety' to 'verification-failed-yakkety'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 4.8.0-34.36

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linux (4.8.0-34.36) yakkety; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1651800

  * Miscellaneous Ubuntu changes
    - SAUCE: Do not build the xr-usb-serial driver for s390

linux (4.8.0-33.35) yakkety; urgency=low

  [ Thadeu Lima de Souza Cascardo ]

  * Release Tracking Bug
    - LP: #1651721

  [ Luis Henriques ]

  * crypto : tolerate new crypto hardware for z Systems (LP: #1644557)
    - s390/zcrypt: Introduce CEX6 toleration

  * Several new Asus laptops are missing touchpad support (LP: #1650895)
    - HID: asus: Add i2c touchpad support

  * Acer, Inc ID 5986:055a is useless after 14.04.2 installed. (LP: #1433906)
    - uvcvideo: uvc_scan_fallback() for webcams with broken chain

  * cdc_ether fills kernel log (LP: #1626371)
    - cdc_ether: Fix handling connection notification

  * Kernel Fixes to get TCMU File Backed Optical to work (LP: #1646204)
    - SAUCE: target/user: Fix use-after-free of tcmu_cmds if they are expired

  * CVE-2016-9756
    - KVM: x86: drop error recovery in em_jmp_far and em_ret_far

  * On boot excessive number of kworker threads are running (LP: #1649905)
    - slub: move synchronize_sched out of slab_mutex on shrink

  * Ethernet not work after upgrade from kernel 3.19 to 4.4 [10ec:8168]
    (LP: #1648279)
    - ACPI / blacklist: Make Dell Latitude 3350 ethernet work

  * Ubuntu 16.10 netboot install fails with "Oops: Exception in kernel mode,
    sig: 5 [#1] " (lpfc) (LP: #1648873)
    - scsi: lpfc: fix oops/BUG in lpfc_sli_ringtxcmpl_put()

  * CVE-2016-9793
    - net: avoid signed overflows for SO_{SND|RCV}BUFFORCE

  * [Hyper-V] Kernel panic not functional on 32bit Ubuntu 14.10, 15.04, and
    15.10 (LP: #1400319)
    - Drivers: hv: avoid vfree() on crash

  * d-i is missing usb support for platforms that use the xhci-platform driver
    (LP: #1625222)
    - d-i initrd needs additional usb modules to support the merlin platform

  * overlayfs no longer supports nested overlayfs mounts, but there is a fix
    upstream (LP: #1647007)
    - ovl: fix d_real() for stacked fs

  * Yakkety: arm64: CONFIG_ARM64_ERRATUM_845719 isn't enabled (LP: #1647793)
    - [Config] CONFIG_ARM64_ERRATUM_845719=y

  * Ubuntu16.10 - EEH on BELL3 adapter fails to recover (serial/tty)
    (LP: #1646857)
    - serial: 8250_pci: Detach low-level driver during PCI error recovery

  * Driver for Exar USB UART (LP: #1645591)
    - SAUCE: xr-usb-serial: Driver for Exar USB serial ports
    - SAUCE: xr-usb-serial: interface for switching modes
    - SAUCE: cdc-acm: Exclude Exar USB serial ports

  * [Bug] (Purley) x86/hpet: Reduce HPET counter read contention (LP: #1645928)
    - x86/hpet: Reduce HPET counter read contention

  * Need Alps upstream their new touchpad driver (LP: #1571530)
    - Input: ALPS - add touchstick support for SS5 hardware
    - Input: ALPS - handle 0-pressure 1F events
    - Input: ALPS - allow touchsticks to report pressure
    - Input: ALPS - set DualPoint flag for 74 03 28 devices

  * CONFIG_NR_CPUS=256 is too low (LP: #1579205)
    - [Config] Increase the NR_CPUS to 512 for amd64 to support systems with a...

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1645591

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Is there any way to re-enable the cdc-acm driver for these devices without compiling my own kernel?

It looks like the xr-usb-serial driver is (by default) compiled for x86 only but I want to use them on a raspberry pi.