serial/imx: fix custom-baudrate handling

It was not possible to set custom-baudrates like 62500.

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 5bce53655c00..79d1943c2e79 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1028,6 +1028,11 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
                  */
                 div = 1;
         } else {
+                /* custom-baudrate handling */
+                div = sport->port.uartclk / (baud * 16);
+                if (baud == 38400 && quot != div)
+                        baud = sport->port.uartclk / (quot * 16);
+
                 div = sport->port.uartclk / (baud * 16);
                 if (div > 7)
                         div = 7;