APPLIED(D)/cmt: [PATCH v2 0/1][D][OEM-OSP1-B]Sometimes touchpad automatically trigger double click

[Khaled Elmously]

Applied to Disco - but thd bug was already set to "Fix committed" for Disco.


On 2019-06-20 13:06:58 , AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1833484
> 
> [Impact]
> Dell machines which uses goodix touchpad IC emit double click event
> while touching the touchpad if designware i2c adapter is in runtime
> suspend.
> 
> Goodix re-assert the interrupt if host doesn't read the data within
> 100ms and designware takes a longer time to wake up from runtime
> suspend. In the case, it got a second interrupt during resuming, so
> it thinks it's a double click.
> 
> [Fix]
> There is no simple way to fix this, it's a firmware issue and goodix
> agrees to fix this in their firmware on next release, but this issue is
> still affects the machines that don't come with an updated firmware. So,
> add a quirk to mark those machines and avoid the designware from entering
> runtime suspend.
> 
> [Regression Potential]
> Low, it only affects the listed machines, and prevent designware from
> entering runtime suspend impacts the power consumption little or none
> during short or long idle.
> 
> [MISC]
> This patch contains on going product name, so set it as SAUCE patch,
> will submit it to upstream and to Bionic kernel later.
> 
> AceLan Kao (1):
>   UBUNTU: SAUCE: i2c: designware: Add disable runtime pm quirk
> 
>  drivers/i2c/busses/i2c-designware-master.c | 44 +++++++++++++++++++++-
>  1 file changed, 42 insertions(+), 2 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
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