Messages in this thread Patch in this message | | | From | KT Liao <> | Subject | [PATCH] Input: elantech - Fix V4 report decoding for module with middle key | Date | Mon, 28 May 2018 19:33:02 +0800 |
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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> --- 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 fb4d902..f39dc66 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) -- 2.7.4
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