USB: serial: cypress_m8: clean up initial-termios handling

Now that init_termios() is only called on first use, we can clean up the
cypress_m8 initial-termios handling.

Note that only the earthmate chip type used settings different from the
defaults provided by USB serial core, and that the chip type is indeed
known when init_termios is called at tty-install time.

Signed-off-by: Johan Hovold <johan@kernel.org>

diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index f9bbbdd..72d3ae1 100644 (file)
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -98,7 +98,6 @@ struct cypress_private {
        int write_urb_interval;            /* interval to use for write urb */
        int read_urb_interval;             /* interval to use for read urb */
        int comm_is_ok;                    /* true if communication is (still) ok */
-       int termios_initialized;
        __u8 line_control;                 /* holds dtr / rts value */
        __u8 current_status;               /* received from last read - info on dsr,cts,cd,ri,etc */
        __u8 current_config;               /* stores the current configuration byte */
@@ -122,6 +121,7 @@ static int  cypress_write(struct tty_struct *tty, struct usb_serial_port *port,
                        const unsigned char *buf, int count);
 static void cypress_send(struct usb_serial_port *port);
 static int  cypress_write_room(struct tty_struct *tty);
+static void cypress_earthmate_init_termios(struct tty_struct *tty);
 static void cypress_set_termios(struct tty_struct *tty,
                        struct usb_serial_port *port, struct ktermios *old);
 static int  cypress_tiocmget(struct tty_struct *tty);
@@ -149,6 +149,7 @@ static struct usb_serial_driver cypress_earthmate_device = {
        .dtr_rts =                      cypress_dtr_rts,
        .write =                        cypress_write,
        .write_room =                   cypress_write_room,
+       .init_termios =                 cypress_earthmate_init_termios,
        .set_termios =                  cypress_set_termios,
        .tiocmget =                     cypress_tiocmget,
        .tiocmset =                     cypress_tiocmset,
@@ -463,7 +464,6 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
 
        priv->cmd_ctrl = 0;
        priv->line_control = 0;
-       priv->termios_initialized = 0;
        priv->rx_flags = 0;
        /* Default packet format setting is determined by packet size.
           Anything with a size larger then 9 must have a separate
@@ -853,6 +853,11 @@ static int cypress_tiocmset(struct tty_struct *tty,
        return cypress_write(tty, port, NULL, 0);
 }
 
+static void cypress_earthmate_init_termios(struct tty_struct *tty)
+{
+       tty_encode_baud_rate(tty, 4800, 4800);
+}
+
 static void cypress_set_termios(struct tty_struct *tty,
        struct usb_serial_port *port, struct ktermios *old_termios)
 {
@@ -864,33 +869,6 @@ static void cypress_set_termios(struct tty_struct *tty,
        __u8 oldlines;
        int linechange = 0;
 
-       spin_lock_irqsave(&priv->lock, flags);
-       /* We can't clean this one up as we don't know the device type
-          early enough */
-       if (!priv->termios_initialized) {
-               if (priv->chiptype == CT_EARTHMATE) {
-                       tty->termios = tty_std_termios;
-                       tty->termios.c_cflag = B4800 | CS8 | CREAD | HUPCL |
-                               CLOCAL;
-                       tty->termios.c_ispeed = 4800;
-                       tty->termios.c_ospeed = 4800;
-               } else if (priv->chiptype == CT_CYPHIDCOM) {
-                       tty->termios = tty_std_termios;
-                       tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
-                               CLOCAL;
-                       tty->termios.c_ispeed = 9600;
-                       tty->termios.c_ospeed = 9600;
-               } else if (priv->chiptype == CT_CA42V2) {
-                       tty->termios = tty_std_termios;
-                       tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
-                               CLOCAL;
-                       tty->termios.c_ispeed = 9600;
-                       tty->termios.c_ospeed = 9600;
-               }
-               priv->termios_initialized = 1;
-       }
-       spin_unlock_irqrestore(&priv->lock, flags);
-
        /* Unsupported features need clearing */
        tty->termios.c_cflag &= ~(CMSPAR|CRTSCTS);