serial: sh-sci: Fix up PORT_SCI console output ordering.

Fix SCI transmission sequence in console output function.

This reorders the write sequence to match the SH-3 manual, and corrects
a console corruption bug observed on SH-3 SCI.

Signed-off-by: Toshinobu Sugioka <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index fa4d52a6c032aade904b030f753a84b752fb1e87..a4cf1079b3129e4892fb711b5f95276055552458 100644 (file)
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -151,9 +151,8 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
                status = sci_in(port, SCxSR);
        } while (!(status & SCxSR_TDxE(port)));
 
-       sci_in(port, SCxSR);            /* Dummy read */
-       sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
        sci_out(port, SCxTDR, c);
+       sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
 }
 #endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */