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SubjectRe: [PATCH] HID: i2c-hid: Disable runtime PM on Goodix touchpad
On Mon, 14 Jan 2019, Kai-Heng Feng wrote:

> A Goodix touchpad doesn't work. Touching the touchpad can trigger IRQ
> but there's no input event from HID subsystem.
> Turns out it reports some invalid data:
> [ 22.136630] i2c_hid i2c-DELL091F:00: input: 0b 00 01 00 00 00 00 00 00 00 00
> After some trial and error, it's another device that doesn't work well
> with ON/SLEEP commands. Disable runtime PM to fix the issue.

Thanks, I've now applied the patch to for-5.0/upstream-fixes. I am
wondering though we are we seeing these at all - do other OSes not do the
runtime PM on i2c at all?

Jiri Kosina

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