Fix "incomplete report" noise after S3

[Kai-Heng Feng]

[Impact]
I2C HID devices may keep spewing out error "i2c_hid_get_input:
incomplete report (30/2)" after system S3.

[Fix]
It a regression caused by commit ac75a041048b, backport commmit
ef6eaf27274c to fix it. Input report length 2 is a valid length.

[Test]
With the fix the issue can no longer be observed on Alps touchpads.

[Regression Potential]
None. Input report lenght 2 is valid per spec.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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 1802813

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.

[AceLan Kao (acelankao)]

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-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

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!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem - 4.15.0-1030.35

---------------
linux-oem (4.15.0-1030.35) bionic; urgency=medium

  * linux-oem: 4.15.0-1030.35 -proposed tracker (LP: #1806663)

  * Add HMS CAN driver for Dell Edge Gateways (LP: #1807339)
    - SAUCE: (no-up) add IXXAT USB-to-CAN driver

  * Add support for 0cf3:535b QCA_ROME device (LP: #1807333)
    - Bluetooth: btusb: Add support for 0cf3:535b QCA_ROME device

  * Add support for Dell DW5821e WWAN/GPS module (LP: #1807342)
    - qmi_wwan: add support for the Dell Wireless 5821e module
    - qmi_wwan: fix interface number for DW5821e production firmware
    - USB: option: add support for DW5821e

  * Fix Terminus USB hub that may breaks connected USB devices after S3
    (LP: #1806850)
    - USB: Wait for extra delay time after USB_PORT_FEAT_RESET for quirky hub

  * The line-out on the Dell Dock station can't work (LP: #1806532)
    - ALSA: usb-audio: Allow to override the longname string
    - ALSA: usb-audio: Give proper vendor/product name for Dell WD15 Dock
    - ALSA: usb-audio: Add vendor and product name for Dell WD19 Dock

  * Enable new Realtek card reader (LP: #1806335)
    - USB: usb-storage: Add new IDs to ums-realtek
    - SAUCE: (noup) USB: usb-storage: Make MMC support optional on ums-realtek

  [ Ubuntu: 4.15.0-43.46 ]

  * linux: 4.15.0-43.46 -proposed tracker (LP: #1806659)
  * System randomly hangs during suspend when mei_wdt is loaded (LP: #1803942)
    - SAUCE: base/dd: limit release function changes to vfio driver only
  * Workaround CSS timeout on AMD SNPS 3.0 xHC (LP: #1806838)
    - xhci: Allow more than 32 quirks
    - xhci: workaround CSS timeout on AMD SNPS 3.0 xHC
  * linux-buildinfo: pull out ABI information into its own package
    (LP: #1806380)
    - [Packaging] limit preparation to linux-libc-dev in headers
    - [Packaging] commonise debhelper invocation
    - [Packaging] ABI -- accumulate abi information at the end of the build
    - [Packaging] buildinfo -- add basic build information
    - [Packaging] buildinfo -- add firmware information to the flavour ABI
    - [Packaging] buildinfo -- add compiler information to the flavour ABI
    - [Packaging] buildinfo -- add buildinfo support to getabis
    - [Config] buildinfo -- add retpoline version markers
  * linux packages should own /usr/lib/linux/triggers (LP: #1770256)
    - [Packaging] own /usr/lib/linux/triggers
  * CVE-2018-12896
    - posix-timers: Sanitize overrun handling
  * CVE-2018-16276
    - USB: yurex: fix out-of-bounds uaccess in read handler
  * CVE-2018-10902
    - ALSA: rawmidi: Change resized buffers atomically
  * CVE-2018-18710
    - cdrom: fix improper type cast, which can leat to information leak.
  * CVE-2018-18690
    - xfs: don't fail when converting shortform attr to long form during
      ATTR_REPLACE
  * CVE-2018-14734
    - infiniband: fix a possible use-after-free bug
  * CVE-2018-18445
    - bpf: 32-bit RSH verification must truncate input before the ALU op
  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

 -- Chia-Lin Kao (AceLan) <email address hidden> Sat, 08 Dec 2018 11:02:54 +0800

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kleber Sacilotto de Souza (kleber-souza)]

This fix has already been applied to Bionic as part of bug 1808399.