diff options
Diffstat (limited to 'drivers/tty/serial/lantiq.c')
| -rw-r--r-- | drivers/tty/serial/lantiq.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c index 6637b3caa6b7..6da1b7496c6c 100644 --- a/drivers/tty/serial/lantiq.c +++ b/drivers/tty/serial/lantiq.c @@ -139,6 +139,13 @@ lqasc_stop_tx(struct uart_port *port) return; } +static bool lqasc_tx_ready(struct uart_port *port) +{ + u32 fstat = __raw_readl(port->membase + LTQ_ASC_FSTAT); + + return (fstat & ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF; +} + static void lqasc_start_tx(struct uart_port *port) { @@ -228,8 +235,7 @@ lqasc_tx_chars(struct uart_port *port) return; } - while (((__raw_readl(port->membase + LTQ_ASC_FSTAT) & - ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF) != 0) { + while (lqasc_tx_ready(port)) { if (port->x_char) { writeb(port->x_char, port->membase + LTQ_ASC_TBUF); port->icount.tx++; |