USB: pl2303: remove bogus checks and fix speed support to use tty_get_baud_rate()

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 32 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 4348c1feab4e..f9f85f56f0db 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -484,15 +484,6 @@ static void pl2303_set_termios(struct usb_serial_port *port,
         spin_unlock_irqrestore(&priv->lock, flags);
 
         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;
-                }
-        }
 
         buf = kzalloc(7, GFP_KERNEL);
         if (!buf) {
@@ -517,29 +508,7 @@ static void pl2303_set_termios(struct usb_serial_port *port,
                 dbg("%s - data bits = %d", __FUNCTION__, buf[6]);
         }
 
-        baud = 0;
-        switch (cflag & CBAUD) {
-                case B0:        baud = 0;       break;
-                case B75:       baud = 75;      break;
-                case B150:      baud = 150;     break;
-                case B300:      baud = 300;     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 B9600:     baud = 9600;    break;
-                case B19200:    baud = 19200;   break;
-                case B38400:    baud = 38400;   break;
-                case B57600:    baud = 57600;   break;
-                case B115200:   baud = 115200;  break;
-                case B230400:   baud = 230400;  break;
-                case B460800:   baud = 460800;  break;
-                default:
-                        dev_err(&port->dev, "pl2303 driver does not support"
-                                " the baudrate requested (fix it)\n");
-                        break;
-        }
+        baud = tty_get_baud_rate(port->tty);;
         dbg("%s - baud = %d", __FUNCTION__, baud);
         if (baud) {
                 buf[0] = baud & 0xff;