diff options
Diffstat (limited to 'drivers/serial/sh-sci.c')
| -rw-r--r-- | drivers/serial/sh-sci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 972fca0a3ef1..ff38dbdb5c6e 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -799,8 +799,8 @@ static void sci_free_irq(struct sci_port *port) static unsigned int sci_tx_empty(struct uart_port *port) { - /* Can't detect */ - return TIOCSER_TEMT; + unsigned short status = sci_in(port, SCxSR); + return status & SCxSR_TEND(port) ? TIOCSER_TEMT : 0; } static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl) |