[Bug 1784152] Re: i2c_hid_get_input floods system logs

I was having the same issue on a dell inspiron 15 7000, with more

i2c_hid i2c-ELAN2097:00: i2c_hid_get_input: incomplete report (67/65535)

records in my logs per second than I cared to count.


adding 'acpi_osi=' to GRUB_CMD_LINE_DEFAULT only seemed to succeed in disabling my trackpad, so i quickly undid that.

I applied rekby's solution, put the machine to sleep a few times, and so
far haven't seen the issue rear it's ugly head. If it turns out that I
need to apply lscotte's solution for this particular dell model I'll
post again to let folks know.

After deleting old logs in /var/log, truncating kern.log and syslog,
I've freed up more then 50G of my pitiful 100G partition ;)

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https://bugs.launchpad.net/bugs/1784152

Title:
i2c_hid_get_input floods system logs

Status in linux package in Ubuntu:
Confirmed

Bug description:
Ubuntu 4.15.0-29.31-generic 4.15.18

After upgrading to kernel version 4.15.0-29 from 4.15.0-23, the system
logs are flooded whenever I move the cursor with my touchpad.

It looks like this:
i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535)
i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535)
i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535)
i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535)
etc...

This problem did not occur on the previous kernel version so there
must have been a change to the "drivers/hid/i2c-hid/i2c-hid.c" file.
This seems to be fixed in a recent commit here:
https://github.com/torvalds/linux/commit/ef6eaf27274c0351f7059163918f3795da13199c

I am currently running the older kernel version but would still like
to be up to date without this flooding happening.

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