From e0ae2519ca004a628fa55aeef969c37edce522d3 Mon Sep 17 00:00:00 2001 From: ??? Date: Thu, 21 Jun 2018 17:15:32 -0700 Subject: [PATCH] Input: elantech - fix V4 report decoding for module with middle key 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 Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 4c52e43c9273..dd85b16dc6f8 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -799,7 +799,7 @@ static int elantech_packet_check_v4(struct psmouse *psmouse) else if (ic_version == 7 && etd->info.samples[1] == 0x2A) sanity_check = ((packet[3] & 0x1c) == 0x10); else - sanity_check = ((packet[0] & 0x0c) == 0x04 && + sanity_check = ((packet[0] & 0x08) == 0x00 && (packet[3] & 0x1c) == 0x10); if (!sanity_check) -- 2.30.2