check u32 < 0 in hwmon/fscpos.c

hi,

yet another check < 0. Since data->pwm is u8 i removed the check. Maybe v should be u8 and simple_strtoul() casted to u8, so we can remove both checks. If this is the case, i would create a patch to convert all those cases in the file.

@@ -229,7 +229,6 @@ static ssize_t set_pwm(struct i2c_client
 	unsigned long v = simple_strtoul(buf, NULL, 10);
 
 	/* Range: 0..255 */
-	if (v < 0) v = 0;
 	if (v > 255) v = 255;
 
 	down(&data->update_lock);

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