| From: ??? <kt.liao@emc.com.tw> |
| Date: Thu, 21 Jun 2018 17:15:32 -0700 |
| Subject: Input: elantech - fix V4 report decoding for module with middle key |
| |
| commit e0ae2519ca004a628fa55aeef969c37edce522d3 upstream. |
| |
| Some touchpad has middle key and it will be indicated in bit 2 of packet[0]. |
| We need to fix V4 formation's byte mask to prevent error decoding. |
| |
| Signed-off-by: KT Liao <kt.liao@emc.com.tw> |
| Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| drivers/input/mouse/elantech.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/input/mouse/elantech.c |
| +++ b/drivers/input/mouse/elantech.c |
| @@ -737,7 +737,7 @@ static int elantech_packet_check_v4(stru |
| if (etd->crc_enabled) |
| sanity_check = ((packet[3] & 0x08) == 0x00); |
| else |
| - sanity_check = ((packet[0] & 0x0c) == 0x04 && |
| + sanity_check = ((packet[0] & 0x08) == 0x00 && |
| (packet[3] & 0x1c) == 0x10); |
| |
| if (!sanity_check) |
