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-rw-r--r--drivers/serial/sh-sci.c4
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)