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)