From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/drivers/input/mouse/elantech.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/kernel/drivers/input/mouse/elantech.c b/kernel/drivers/input/mouse/elantech.c
index 2e53ea2..598fcb9 100644
--- a/kernel/drivers/input/mouse/elantech.c
+++ b/kernel/drivers/input/mouse/elantech.c
@@ -674,10 +674,11 @@
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
- int id = ((packet[3] & 0xe0) >> 5) - 1;
+ int id;
int pres, traces;
- if (id < 0)
+ id = ((packet[3] & 0xe0) >> 5) - 1;
+ if (id < 0 || id >= ETP_MAX_FINGERS)
return;
etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2];
@@ -707,7 +708,7 @@
int id, sid;
id = ((packet[0] & 0xe0) >> 5) - 1;
- if (id < 0)
+ if (id < 0 || id >= ETP_MAX_FINGERS)
return;
sid = ((packet[3] & 0xe0) >> 5) - 1;
@@ -728,7 +729,7 @@
input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x);
input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y);
- if (sid >= 0) {
+ if (sid >= 0 && sid < ETP_MAX_FINGERS) {
etd->mt[sid].x += delta_x2 * weight;
etd->mt[sid].y -= delta_y2 * weight;
input_mt_slot(dev, sid);
--
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