[PATCH] I2C: remove check_region usage and warning from i2c-sensor

drivers/i2c/i2c-sensor.c

@@ -50,8 +50,9 @@ int i2c_detect(struct i2c_adapter *adapter,
 		return -1;
 
 	for (addr = 0x00; addr <= (is_isa ? 0xffff : 0x7f); addr++) {
-		/* XXX: WTF is going on here??? */
-		if ((is_isa && check_region(addr, 1)) ||
+		void *region_used = request_region(addr, 1, "foo");
+		release_region(addr, 1);
+		if ((is_isa && (region_used == NULL)) ||
 		    (!is_isa && i2c_check_addr(adapter, addr)))
 			continue;