serial: sccnxp: Report actual baudrate back to core

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 10 insertions, 4 deletions

diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index 05d767cf82a7..a7a6659b96ef 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -213,7 +213,7 @@ const struct baud_table baud_std[] = {
         { 0, 0, 0, 0 }
 };
 
-static void sccnxp_set_baud(struct uart_port *port, int baud)
+static int sccnxp_set_baud(struct uart_port *port, int baud)
 {
         struct sccnxp_port *s = dev_get_drvdata(port->dev);
         int div_std, tmp_baud, bestbaud = baud, besterr = -1;
@@ -244,8 +244,11 @@ static void sccnxp_set_baud(struct uart_port *port, int baud)
         sccnxp_port_write(port, SCCNXP_ACR_REG, acr | ACR_TIMER_MODE);
         sccnxp_port_write(port, SCCNXP_CSR_REG, (csr << 4) | csr);
 
-        dev_dbg(port->dev, "Baudrate desired: %i, calculated: %i\n",
-                baud, bestbaud);
+        if (baud != bestbaud)
+                dev_dbg(port->dev, "Baudrate desired: %i, calculated: %i\n",
+                        baud, bestbaud);
+
+        return bestbaud;
 }
 
 static void sccnxp_enable_irq(struct uart_port *port, int mask)
@@ -587,11 +590,14 @@ static void sccnxp_set_termios(struct uart_port *port,
         baud = uart_get_baud_rate(port, termios, old, 50,
                                   (s->flags & SCCNXP_HAVE_MR0) ?
                                   230400 : 38400);
-        sccnxp_set_baud(port, baud);
+        baud = sccnxp_set_baud(port, baud);
 
         /* Update timeout according to new baud rate */
         uart_update_timeout(port, termios->c_cflag, baud);
 
+        if (tty_termios_baud_rate(termios))
+                tty_termios_encode_baud_rate(termios, baud, baud);
+
         /* Enable RX & TX */
         sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_ENABLE | CR_TX_ENABLE);