hwmon: (f75375s) Fix value range for PWM modes

Accepted value range for PWM modes was 0..4, even though only 0..3 is
subsequently used. Limit permitted value range to 0..3 to avoid unpredictable
behavior.

Cc: Riku Voipio <riku.voipio@iki.fi>
Reviewed-by: Bjoern Gerhart <oss@extracloud.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
index 316c29a0b3183130a00ac17213ace08961623c1f..777a665164f992d89500ef9cd2c91fb05d19d575 100644 (file)
--- a/drivers/hwmon/f75375s.c
+++ b/drivers/hwmon/f75375s.c
@@ -309,7 +309,7 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
        struct f75375_data *data = i2c_get_clientdata(client);
        u8 fanmode;
 
-       if (val < 0 || val > 4)
+       if (val < 0 || val > 3)
                return -EINVAL;
 
        fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);