diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 2acfcea403ce..777392914819 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -219,7 +219,7 @@ struct cdns_platform_data {
 	u32 quirks;
 };
 
-struct serial_rs485 cdns_rs485_supported = {
+static struct serial_rs485 cdns_rs485_supported = {
 	.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND |
 		 SER_RS485_RTS_AFTER_SEND,
 	.delay_rts_before_send = 1,