diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index eeea84c309e..78ad48718ab 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -885,12 +885,14 @@ static void sdio_uart_set_termios(struct tty_struct *tty, struct ktermios *old_t
 	sdio_uart_release_func(port);
 }
 
-static void sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
+static int sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
 {
 	struct sdio_uart_port *port = tty->driver_data;
+	int result;
 
-	if (sdio_uart_claim_func(port) != 0)
-		return;
+	result = sdio_uart_claim_func(port);
+	if (result != 0)
+		return result;
 
 	if (break_state == -1)
 		port->lcr |= UART_LCR_SBC;
@@ -899,6 +901,7 @@ static void sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
 	sdio_out(port, UART_LCR, port->lcr);
 
 	sdio_uart_release_func(port);
+	return 0;
 }
 
 static int sdio_uart_tiocmget(struct tty_struct *tty, struct file *file)