diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index d552de683110..eeea84c309e6 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -386,7 +386,7 @@ static void sdio_uart_stop_rx(struct sdio_uart_port *port)
 	sdio_out(port, UART_IER, port->ier);
 }
 
-static void sdio_uart_receive_chars(struct sdio_uart_port *port, int *status)
+static void sdio_uart_receive_chars(struct sdio_uart_port *port, unsigned int *status)
 {
 	struct tty_struct *tty = port->tty;
 	unsigned int ch, flag;