[SRU] [Unstable/OEM-5.6] [PATCH 0/1] Fix non-working Goodix touchpad after system sleep
Kai-Heng Feng
kai.heng.feng at canonical.com
Tue Aug 18 08:43:08 UTC 2020
BugLink: https://bugs.launchpad.net/bugs/1891998
[Impact]
After system sleep, Goodix touchpad doesn't work anymore.
[Fix]
Add a delay after issuing SET_POWER_ON command.
[Test]
With the patch applied, Goodix touchpad still works after system sleep.
[Regression Potential]
The original delay between SET_POWER_ON and RESET was increaed to 60ms,
so the the driver becomes much more forgiving on power management. Hence
I am not seeing any major potential regression risk here.
Hans de Goede (1):
HID: i2c-hid: Always sleep 60ms after I2C_HID_PWR_ON commands
drivers/hid/i2c-hid/i2c-hid-core.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
--
2.17.1
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