Input: synaptics - fix touchpad not working after S2R on Vostro V13
authorDmitry Torokhov <dmitry.torokhov@gmail.com>
Mon, 12 Dec 2011 08:05:53 +0000 (00:05 -0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 6 Jan 2012 22:17:00 +0000 (14:17 -0800)
commit8246905d452b12e1ce535705c746c3ff66660e09
treef76f6df12d8298cae653e9f5d38ef694fb058bee
parentcc9894300313f95acc1f44580d96f7b4cb81afa3
Input: synaptics - fix touchpad not working after S2R on Vostro V13

commit 8521478f67e95ada4e87970c7b41e504c724b2cf upstream.

Synaptics touchpads on several Dell laptops, particularly Vostro V13
systems, may not respond properly to PS/2 commands and queries immediately
after resuming from suspend to RAM. This leads to unresponsive touchpad
after suspend/resume cycle.

Adding a 1-second delay after resetting the device allows touchpad to
finish initializing (calibrating?) and start reacting properly.

Reported-by: Daniel Manrique <daniel.manrique@canonical.com>
Tested-by: Daniel Manrique <daniel.manrique@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/input/mouse/synaptics.c