Drivers: Misc: tsl2250: fix warnings, unsigned long will never < 0

  val is unsigned long which never < 0

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/tsl2550.c

@@ -204,7 +204,7 @@ static ssize_t tsl2550_store_power_state(struct device *dev,
 	unsigned long val = simple_strtoul(buf, NULL, 10);
 	int ret;
 
-	if (val < 0 || val > 1)
+	if (val > 1)
 		return -EINVAL;
 
 	mutex_lock(&data->update_lock);
@@ -236,7 +236,7 @@ static ssize_t tsl2550_store_operating_mode(struct device *dev,
 	unsigned long val = simple_strtoul(buf, NULL, 10);
 	int ret;
 
-	if (val < 0 || val > 1)
+	if (val > 1)
 		return -EINVAL;
 
 	if (data->power_state == 0)