Input: xen-kbdfront - fix mouse getting stuck after save/restore
authorIgor Mammedov <imammedo@redhat.com>
Mon, 18 Apr 2011 17:17:17 +0000 (10:17 -0700)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Mon, 18 Apr 2011 17:17:45 +0000 (10:17 -0700)
commitc36b58e8a9112017c2bcc322cc98e71241814303
tree64a4a1b7d7719ef40451493a2c049b3b1ddfd5bb
parent80b4895aa4578e9372d76cd4063f82d0c3994d77
Input: xen-kbdfront - fix mouse getting stuck after save/restore

Mouse gets "stuck" after restore of PV guest but buttons are in working
condition.

If driver has been configured for ABS coordinates at start it will get
XENKBD_TYPE_POS events and then suddenly after restore it'll start getting
XENKBD_TYPE_MOTION events, that will be dropped later and they won't get
into user-space.

Regression was introduced by hunk 5 and 6 of
5ea5254aa0ad269cfbd2875c973ef25ab5b5e9db
("Input: xen-kbdfront - advertise either absolute or relative
coordinates").

Driver on restore should ask xen for request-abs-pointer again if it is
available. So restore parts that did it before 5ea5254.

Acked-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
[v1: Expanded the commit description]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
drivers/input/misc/xen-kbdfront.c