On Mon, May 23, 2016 at 08:04:27PM -0700, Ping Cheng wrote: > ThinkPad X60 Tablet PC (pen only device) sometime posts > packets that are larger than W8001_PKTLEN_TPCPEN. > > Reported-by: Chris J Arges <christopherarges@xxxxxxxxx> > Tested-by: Chris J Arges <christopherarges@xxxxxxxxx> > Signed-off-by: Ping Cheng <pingc@xxxxxxxxx> Reviewed-by: Peter Hutterer <peter.hutterer@xxxxxxxxx> Cheers, Peter > --- > drivers/input/touchscreen/wacom_w8001.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c > index b1b4127..d5dcda2 100644 > --- a/drivers/input/touchscreen/wacom_w8001.c > +++ b/drivers/input/touchscreen/wacom_w8001.c > @@ -339,6 +339,15 @@ static irqreturn_t w8001_interrupt(struct serio *serio, > w8001->idx = 0; > parse_multi_touch(w8001); > break; > + > + default: > + /* > + * ThinkPad X60 Tablet PC (pen only device) sometime sends > + * invalid data packets that are larger than W8001_PKTLEN_TPCPEN. > + * Let's start over again. > + */ > + if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1) > + w8001->idx = 0; > } > > return IRQ_HANDLED; > -- > 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
