Fix alps driver for multitouch function.

[Ying-Chun Liu]

We need to cherry-pick 9a54cf462d6f3c383a5a4f5fe15c020a03db44e6 for alps touchpads. Otherwise the touchpad will stop working when we put more than 3 fingers on the pad.

Please consider SRU this commit.

Impact:
  Alps driver doesn't work when users put more than 3 fingers on it.

Fix:
  Alps touchpad still works good after multitouch for more than 3 fingers.

Tested:
  The patch is tested on new Dell Inspiron laptops and works very good.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1633321

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.

[Ying-Chun Liu (paulliu)]

Thanks. Attached the patch just for a record.

[Luis Henriques (henrix)]

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-xenial' to 'verification-done-xenial'.

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!

[Po-Hsu Lin (cypressyew)]

Verified with 201610-25182, this bug can be fixed after installing the proposed kernel.
I can tap with 4-fingers and it's still working properly.

[Steve Langasek (vorlon)]

The verification of the Stable Release Update for linux-lts-xenial has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-51.72

---------------
linux (4.4.0-51.72) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1644611

  * 4.4.0-1037-snapdragon #41: kernel panic on boot (LP: #1644596)
    - Revert "dma-mapping: introduce the DMA_ATTR_NO_WARN attribute"
    - Revert "powerpc: implement the DMA_ATTR_NO_WARN attribute"
    - Revert "nvme: use the DMA_ATTR_NO_WARN attribute"

linux (4.4.0-50.71) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1644169

  * xenial 4.4.0-49.70 kernel breaks LXD userspace (LP: #1644165)
    - Revert "UBUNTU: SAUCE: (namespace) fuse: Allow user namespace mounts by
      default"
    - Revert "UBUNTU: SAUCE: (namespace) fs: Don't remove suid for CAP_FSETID for
      userns root"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Don't remove suid for
      CAP_FSETID in s_user_ns""
    - Revert "UBUNTU: SAUCE: (namespace) fs: Allow superblock owner to change
      ownership of inodes"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Allow superblock owner to
      change ownership of inodes with unmappable ids""
    - Revert "UBUNTU: SAUCE: (namespace) security/integrity: Harden against
      malformed xattrs"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: ima/evm: Allow root in s_user_ns
      to set xattrs""
    - Revert "(namespace) dquot: For now explicitly don't support filesystems
      outside of init_user_ns"
    - Revert "(namespace) quota: Handle quota data stored in s_user_ns in
      quota_setxquota"
    - Revert "(namespace) quota: Ensure qids map to the filesystem"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: quota: Convert ids relative to
      s_user_ns""
    - Revert "(namespace) Revert "UBUNTU: SAUCE: quota: Require that qids passed
      to dqget() be valid and map into s_user_ns""
    - Revert "(namespace) vfs: Don't create inodes with a uid or gid unknown to
      the vfs"
    - Revert "(namespace) vfs: Don't modify inodes with a uid or gid unknown to
      the vfs"
    - Revert "UBUNTU: SAUCE: (namespace) fuse: Translate ids in posix acl xattrs"
    - Revert "UBUNTU: SAUCE: (namespace) posix_acl: Export
      posix_acl_fix_xattr_userns() to modules"
    - Revert "(namespace) vfs: Verify acls are valid within superblock's
      s_user_ns."
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Update posix_acl support to
      handle user namespace mounts""
    - Revert "(namespace) fs: Refuse uid/gid changes which don't map into
      s_user_ns"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Refuse uid/gid changes which
      don't map into s_user_ns""
    - Revert "(namespace) mnt: Move the FS_USERNS_MOUNT check into sget_userns"

linux (4.4.0-49.70) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1640921

  * Infiniband driver (kernel module) needed for Azure (LP: #1641139)
    - SAUCE: RDMA Infiniband for Windows Azure
    - [Config] CONFIG_HYPERV_INFINIBAND_ND=m
    - SAUCE: Makefile RDMA infiniband driver for Windows Azure
    - [Config] Add hv_network_direct.ko to generic inclusion list
    - SAUCE: RDMA Infiniband for Windows Azure is dependent on amd64...