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| author | Chris Morgan <macromorgan@hotmail.com> | 2022-11-17 22:09:18 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-11-17 22:14:43 -0800 |
| commit | c7f43645de7895a8e90cb267a9b3c46e989d8ca6 (patch) | |
| tree | 1a35cf76e2d6bb0df31848e9d659ff2a6f7a2a1d /drivers | |
| parent | 5e7a0af793ce7ed528117145f856224deb81b7a7 (diff) | |
| download | linux-stable-c7f43645de7895a8e90cb267a9b3c46e989d8ca6.tar.gz linux-stable-c7f43645de7895a8e90cb267a9b3c46e989d8ca6.tar.bz2 linux-stable-c7f43645de7895a8e90cb267a9b3c46e989d8ca6.zip | |
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: 66603243f528 ("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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/hynitron_cstxxx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/hynitron_cstxxx.c b/drivers/input/touchscreen/hynitron_cstxxx.c index 0b9a99c6f221..e86c85addb38 100644 --- a/drivers/input/touchscreen/hynitron_cstxxx.c +++ b/drivers/input/touchscreen/hynitron_cstxxx.c @@ -210,7 +210,7 @@ static int cst3xx_bootloader_enter(struct i2c_client *client) { int err; u8 retry; - u32 tmp; + u32 tmp = 0; unsigned char buf[3]; for (retry = 0; retry < 5; retry++) { |