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cp2101: Remove broken termios optimisation, use proper speed API

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I've also enabled the commented out support for 7200, 14400, 55854,
127117 and 3686400 baud as you can now set such rates in the kernel.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2007-07-26 18:54:12 +01:00 committed by Greg Kroah-Hartman
parent 67f5dde3d4
commit 01e96d282a
1 changed files with 27 additions and 42 deletions
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69
drivers/usb/serial/cp2101.c
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@ -356,7 +356,7 @@ static void cp2101_get_termios (struct usb_serial_port *port)
dbg("%s - port %d", __FUNCTION__, port->number);
if ((!port->tty) || (!port->tty->termios)) {
if (!port->tty || !port->tty->termios) {
dbg("%s - no tty structures", __FUNCTION__);
return;
}
@ -526,50 +526,35 @@ static void cp2101_set_termios (struct usb_serial_port *port,
return;
}
cflag = port->tty->termios->c_cflag;
/* Check that they really want us to change something */
if (old_termios) {
if ((cflag == old_termios->c_cflag) &&
(RELEVANT_IFLAG(port->tty->termios->c_iflag)
== RELEVANT_IFLAG(old_termios->c_iflag))) {
dbg("%s - nothing to change...", __FUNCTION__);
return;
}
old_cflag = old_termios->c_cflag;
}
old_cflag = old_termios->c_cflag;
baud = tty_get_baud_rate(port->tty);
/* If the baud rate is to be updated*/
if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
switch (cflag & CBAUD) {
/*
* The baud rates which are commented out below
* appear to be supported by the device
* but are non-standard
*/
case B0: baud = 0; break;
case B600: baud = 600; break;
case B1200: baud = 1200; break;
case B1800: baud = 1800; break;
case B2400: baud = 2400; break;
case B4800: baud = 4800; break;
/*case B7200: baud = 7200; break;*/
case B9600: baud = 9600; break;
/*ase B14400: baud = 14400; break;*/
case B19200: baud = 19200; break;
/*case B28800: baud = 28800; break;*/
case B38400: baud = 38400; break;
/*case B55854: baud = 55054; break;*/
case B57600: baud = 57600; break;
case B115200: baud = 115200; break;
/*case B127117: baud = 127117; break;*/
case B230400: baud = 230400; break;
case B460800: baud = 460800; break;
case B921600: baud = 921600; break;
/*case B3686400: baud = 3686400; break;*/
if (baud != tty_termios_baud_rate(old_termios)) {
switch (baud) {
case 0:
case 600:
case 1200:
case 1800:
case 2400:
case 4800:
case 7200:
case 9600:
case 14400:
case 19200:
case 28800:
case 38400:
case 55854:
case 57600:
case 115200:
case 127117:
case 230400:
case 460800:
case 921600:
case 3686400:
break;
default:
dev_err(&port->dev, "cp2101 driver does not "
"support the baudrate requested\n");
baud = 9600;
break;
}