From: Zephaniah E. Hull Date: Fri, 15 May 2009 05:02:33 +0000 (-0700) Subject: Input: psmouse - ESD workaround fix for OLPC XO touchpad X-Git-Tag: firefly_0821_release~12966^2~41 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=535650fd7008caffad29f001bcda43f56bafea8e;p=firefly-linux-kernel-4.4.55.git Input: psmouse - ESD workaround fix for OLPC XO touchpad It appears that when the XO touchpad unit resets from ESD, it sends AA AA instead of AA 00, the psmouse-base code handles the case of AA 00 by triggering a serio reconnect for the port, causing a full reprobe of the device. Testing with OFW shows that this is likely to solve the problem, so the attached patch simply expands the existing test to also catch AA AA. Signed-off-by: Andres Salomon Signed-off-by: Deepak Saxena Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index f8f86de694bb..b407b355dceb 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -327,7 +327,9 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, goto out; } - if (psmouse->packet[1] == PSMOUSE_RET_ID) { + if (psmouse->packet[1] == PSMOUSE_RET_ID || + (psmouse->type == PSMOUSE_HGPK && + psmouse->packet[1] == PSMOUSE_RET_BAT)) { __psmouse_set_state(psmouse, PSMOUSE_IGNORE); serio_reconnect(serio); goto out;