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Input: hynitron_cstxxx - initialize tmp to 0 to fix uninitialized variable issue 

In the very unlikely event the cst3xx_i2c_write() fails inside of the
cst3xx_bootloader_enter() function 5 times in a row, the uninitalized
value of tmp will get compared to CST3XX_BOOTLDR_CHK_VAL. Initialize
the value of tmp to 0 so that in this unlikely event we are comparing
0 instead of an uninitalized variable.

Fixes: 66603243f5 ("Input: add driver for Hynitron cstxxx touchscreens")

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/20221117195921.2291-1-macroalpha82@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Chris Morgan 2022-11-17 22:09:18 -08:00 committed by Dmitry Torokhov
parent 5e7a0af793
commit c7f43645de
1 changed files with 1 additions and 1 deletions
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2
drivers/input/touchscreen/hynitron_cstxxx.c
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@ -210,7 +210,7 @@ static int cst3xx_bootloader_enter(struct i2c_client *client)
{ {
int err; int err;
u8 retry; u8 retry;
u32 tmp; u32 tmp = 0;
unsigned char buf[3]; unsigned char buf[3];
for (retry = 0; retry < 5; retry++) { for (retry = 0; retry < 5; retry++) {