[SRU] [B/D/E/Unstable] [PATCH 0/5] Fix Goodix touchpad may drop first input event
Kai-Heng Feng
kai.heng.feng at canonical.com
Tue Aug 13 18:56:49 UTC 2019
BugLink: https://bugs.launchpad.net/bugs/1840075
[Impact]
If a touchpad is connected to Intel LPSS PCI device, sometimes the first
tap event can be dropped. Goodix touchpad has a rather small buffer so
the time its parent devices spend in resuming need to be small.
[Fix]
Remove Intel LPSS D3cold delay, which is the bottleneck of the
situation.
[Test]
Intel had tested the patch and the result is positive.
[Regression Potential]
Low. Intel internally tested this so it should be rather safe.
Kai-Heng Feng (5):
Revert "UBUNTU: SAUCE: i2c: designware: add G3 3590 into i2c quirk"
Revert "UBUNTU: SAUCE: i2c: designware: add Inpiron 7591 into i2c
quirk"
Revert "UBUNTU: SAUCE: i2c: designware: add Inpiron/Vostro 7590 into
i2c quirk"
Revert "UBUNTU: SAUCE: i2c: designware: Add disable runtime pm quirk"
mfd: intel-lpss: Remove D3cold delay
drivers/i2c/busses/i2c-designware-master.c | 72 +---------------------
drivers/mfd/intel-lpss-pci.c | 2 +
2 files changed, 4 insertions(+), 70 deletions(-)
--
2.17.1
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