]> www.infradead.org Git - users/dwmw2/linux.git/commit
HID: wacom: generic: read HID_DG_CONTACTMAX from any feature report
authorAaron Armstrong Skomra <skomra@gmail.com>
Wed, 12 Jun 2019 21:19:29 +0000 (14:19 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 21 Sep 2019 05:18:02 +0000 (07:18 +0200)
commit41a22481ec5d450069fa688d253a540c63b2a0b3
treef0f530b0875a6e6d8f623a73faaac7136432999d
parent7902ff2b8c97277e242229af2c5bd794283c15ec
HID: wacom: generic: read HID_DG_CONTACTMAX from any feature report

commit 184eccd40389df29abefab88092c4ff33191fd0c upstream.

In the generic code path, HID_DG_CONTACTMAX was previously
only read from the second byte of report 0x23.

Another report (0x82) has the HID_DG_CONTACTMAX in the
higher nibble of the third byte. We should support reading the
value of HID_DG_CONTACTMAX no matter what report we are reading
or which position that value is in.

To do this we submit the feature report as a event report
using hid_report_raw_event(). Our modified finger event path
records the value of HID_DG_CONTACTMAX when it sees that usage.

Fixes: 8ffffd5212846 ("HID: wacom: fix timeout on probe for some wacoms")
Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hid/wacom_sys.c
drivers/hid/wacom_wac.c