On 18/03/2024 17:58, Philip Müller wrote:
> I'm currently developing on the OrangePi Neo-01, which ships with two 
> similar touchpads using the Synaptics driver. On 6.7.10 those two 
> devices get detected normally. On 6.8.1 it seems to error out.
> 
> I either get none, or at best only one of those two devices.
> 
> i2c_hid_acpi: probe of i2c-XXX0001:00 failed with error -110
> i2c_hid_acpi: probe of i2c-XXX0002:00 failed with error -110
> 
> what would be the best way to debug this?
> 

I found the regression in commit aa69d6974185e9f7a552ba982540a38e34f69690
HID: i2c-hid: Switch i2c_hid_parse() to goto style error handling

When I use the commit before I can rmmod and modprobe in a batch script 
using a loop without erroring out to -110. Attached the testing script 
and dmesg log snippets

#!/bin/bash
for ((n=0;n<5;n++))
do
sudo rmmod i2c_hid_acpi
sleep 1
sudo modprobe i2c_hid_acpi --force-vermagic
sleep 2
done

I will try to use the code of 6.8.1 and revert that commit.

-- 
Best, Philip