HID: rmi: Check for additional ACM registers appended to F11 data report
authorAndrew Duggan <aduggan@synaptics.com>
Mon, 8 Dec 2014 23:01:59 +0000 (15:01 -0800)
committerJiri Kosina <jkosina@suse.cz>
Fri, 12 Dec 2014 10:14:46 +0000 (11:14 +0100)
commit8414947a2018a98cf3adc975dc279f41ba30ab11
treef9414212e77c6a4a40b7ed0efe3950aa746c7940
parent6b07974af9698225766d42175470b1a5d7bf9f48
HID: rmi: Check for additional ACM registers appended to F11 data report

If a touchpad reports the F11 data40 register then this indicates that the touchpad reports
additional ACM (Accidental Contact Mitigation) data after the F11 data in the HID attention
report. These additional bytes shift the position of the F30 button data causing the driver
to incorrectly report button state when this functionality is present. This patch accounts
for the additional data in the report.

Fixes:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1398533

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/hid-rmi.c