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serial: sh-sci: Preserve SCIFA/SCIFB bit rate config for serial console

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SCIFA and SCIFB have additional bit rate config bits in the Serial Mode
Register.  Don't touch them when using the port as a serial console, as
we rely on the boot loader to have configured the serial port config.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2016-01-04 14:45:19 +01:00 committed by Greg Kroah-Hartman
parent 95ee05c7ad
commit 3a964abe1e
1 changed files with 2 additions and 1 deletions
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3
drivers/tty/serial/sh-sci.c
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@ -2202,7 +2202,8 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
} else {
/* Don't touch the bit rate configuration */
scr_val = s->cfg->scscr & (SCSCR_CKE1 | SCSCR_CKE0);
smr_val |= serial_port_in(port, SCSMR) & SCSMR_CKS;
smr_val |= serial_port_in(port, SCSMR) &
(SCSMR_CKEDG | SCSMR_SRC_MASK | SCSMR_CKS);
dev_dbg(port->dev, "SCR 0x%x SMR 0x%x\n", scr_val, smr_val);
serial_port_out(port, SCSCR, scr_val);
serial_port_out(port, SCSMR, smr_val);