openwrt/target/linux/bcm27xx/patches-6.6/950-0799-input-edt-ft5x06-Correct-prefix-length-in-snprintf.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

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1.2 KiB
Diff

From e4631fd5c3c3c3710636dfdf9657bdb188bec51d Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 18 Dec 2023 11:49:36 +0000
Subject: [PATCH 0799/1085] input: edt-ft5x06: Correct prefix length in
snprintf
snprintf takes the length of the array that we can print into,
and has to fit the NULL terminator in there too.
Printing the prefix is generally "12-3456 " which is 8 desired
characters (the length of EDT_NAME_PREFIX_LEN) and the NULL.
The space is therefore being truncated to fit the NULL in.
Increase the length snprintf is allowed to use.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/input/touchscreen/edt-ft5x06.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -938,7 +938,7 @@ static int edt_ft5x06_ts_identify(struct
char *model_name = tsdata->name;
char *fw_version = tsdata->fw_version;
- snprintf(model_name, EDT_NAME_PREFIX_LEN, "%s ", dev_name(&client->dev));
+ snprintf(model_name, EDT_NAME_PREFIX_LEN + 1, "%s ", dev_name(&client->dev));
model_name += strlen(model_name);
/* see what we find if we assume it is a M06 *