tree 2cf93a0390dbb12e2d76eabf1a38f85dd2a37a29
parent c5b2b809cee8db018ac68566fe2114c175d79b5b
author Brent Adam <brentadamdev@gmail.com> 1434732815 -0600
committer Jiri Kosina <jkosina@suse.com> 1436347800 +0200

HID: multitouch: Fix fields from pen report ID being interpreted for multitouch

Fields like HID_DG_CONTACTCOUNT are outside of the physical collection,
but within the application collection and report ID.  Make sure to catch
those fields that are not part of the mt_report_id and return 0 so they
can be processed with the pen.  Otherwise, the wrong HID_DG_CONTACTCOUNT
will be applied to cc_index and result in dereferencing a null pointer in
mt_touch_report.

Signed-off-by: Brent Adam <brentadam@smarttech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>