diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index c2759dbfdfd2..671fe5efabf3 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -608,7 +608,7 @@ static int sdio_uart_startup(struct sdio_uart_port *port)
 		if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS))
 			tty->hw_stopped = 1;
 
-	clear_bit(TTY_IO_ERROR, &port->tty->flags);
+	clear_bit(TTY_IO_ERROR, &tty->flags);
 
 	/* Kick the IRQ handler once while we're still holding the host lock */
 	sdio_uart_irq(port->func);