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Input: psmouse - ESD workaround fix for OLPC XO touchpad

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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 <dilinger@debian.org>
Signed-off-by: Deepak Saxena <dsaxena@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Zephaniah E. Hull 2009-05-14 22:02:33 -07:00 committed by Dmitry Torokhov
parent 78f7f36711
commit 535650fd70
1 changed files with 3 additions and 1 deletions
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4
drivers/input/mouse/psmouse-base.c
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@ -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;