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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>
This commit is contained in:
Alexander Shiyan 2012-09-24 21:12:00 +04:00 committed by Greg Kroah-Hartman
parent 93b5c032d9
commit 1685118f55
1 changed files with 10 additions and 4 deletions
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14
drivers/tty/serial/sccnxp.c
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@ -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);