** Changed in: linux (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Disco)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1835150

Title:
  Sometimes touchpad detected as mouse(i2c designware fails to get
  adapter number)

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Invalid
Status in linux-oem-osp1 package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  In Progress
Status in linux-oem-osp1 source package in Bionic:
  Fix Committed
Status in linux source package in Disco:
  In Progress
Status in linux-oem-osp1 source package in Disco:
  In Progress

Bug description:
  [Impact]
  I2C designware fails to get its adapter number, and this may lead to fail to 
access touchpad through I2C bus.
  [ 6.476367] WARNING: CPU: 9 PID: 567 at 
/build/linux-oem-osp1-bkWHJC/linux-oem-osp1-5.0.0/drivers/i2c/i2c-core-base.c:1322
 i2c_add_numbered_adapter+0x81/0x90

  [Fix]
  The 2 commits from v5.1-rc1 fix this issue.
     cd86d1403bb4 i2c: i2c-designware-platdrv: Always use a dynamic adapter 
number
     77f3381a83c2 i2c: i2c-designware-platdrv: Cleanup setting of the adapter 
number

  [Test]
  Verified on Dell machine which had this issue.

  [Regression Potential]
  Low, the 2 commits make it always use dynamic adapter-numbers which does not 
make any difference in most cases and in the one case where it does make a 
difference the behavior change is desirable because the old behavior caused an 
oops.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1835150/+subscriptions

-- 
Mailing list: https://launchpad.net/~kernel-packages
Post to     : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to