diff options
Diffstat (limited to 'drivers/usb/serial/belkin_sa.c')
| -rw-r--r-- | drivers/usb/serial/belkin_sa.c | 82 |
1 files changed, 37 insertions, 45 deletions
diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 3b800d277c4b..86724e885704 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -255,9 +255,10 @@ static void belkin_sa_read_int_callback (struct urb *urb) struct belkin_sa_private *priv; unsigned char *data = urb->transfer_buffer; int retval; + int status = urb->status; unsigned long flags; - switch (urb->status) { + switch (status) { case 0: /* success */ break; @@ -265,10 +266,12 @@ static void belkin_sa_read_int_callback (struct urb *urb) case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); + dbg("%s - urb shutting down with status: %d", + __FUNCTION__, status); return; default: - dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); + dbg("%s - nonzero urb status received: %d", + __FUNCTION__, status); goto exit; } @@ -346,6 +349,7 @@ static void belkin_sa_set_termios (struct usb_serial_port *port, struct ktermios unsigned long flags; unsigned long control_state; int bad_flow_control; + speed_t baud; if ((!port->tty) || (!port->tty->termios)) { dbg ("%s - no tty or termios structure", __FUNCTION__); @@ -361,16 +365,8 @@ static void belkin_sa_set_termios (struct usb_serial_port *port, struct ktermios bad_flow_control = priv->bad_flow_control; spin_unlock_irqrestore(&priv->lock, flags); - /* 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_iflag = old_termios->c_iflag; - old_cflag = old_termios->c_cflag; - } + old_iflag = old_termios->c_iflag; + old_cflag = old_termios->c_cflag; /* Set the baud rate */ if( (cflag&CBAUD) != (old_cflag&CBAUD) ) { @@ -384,38 +380,34 @@ static void belkin_sa_set_termios (struct usb_serial_port *port, struct ktermios if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 1) < 0) err("Set RTS error"); } + } - switch(cflag & CBAUD) { - case B0: /* handled below */ break; - case B300: urb_value = BELKIN_SA_BAUD(300); break; - case B600: urb_value = BELKIN_SA_BAUD(600); break; - case B1200: urb_value = BELKIN_SA_BAUD(1200); break; - case B2400: urb_value = BELKIN_SA_BAUD(2400); break; - case B4800: urb_value = BELKIN_SA_BAUD(4800); break; - case B9600: urb_value = BELKIN_SA_BAUD(9600); break; - case B19200: urb_value = BELKIN_SA_BAUD(19200); break; - case B38400: urb_value = BELKIN_SA_BAUD(38400); break; - case B57600: urb_value = BELKIN_SA_BAUD(57600); break; - case B115200: urb_value = BELKIN_SA_BAUD(115200); break; - case B230400: urb_value = BELKIN_SA_BAUD(230400); break; - default: err("BELKIN USB Serial Adapter: unsupported baudrate request, using default of 9600"); - urb_value = BELKIN_SA_BAUD(9600); break; - } - if ((cflag & CBAUD) != B0 ) { - if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0) - err("Set baudrate error"); - } else { - /* Disable flow control */ - if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, BELKIN_SA_FLOW_NONE) < 0) - err("Disable flowcontrol error"); - - /* Drop RTS and DTR */ - control_state &= ~(TIOCM_DTR | TIOCM_RTS); - if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0) - err("DTR LOW error"); - if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0) - err("RTS LOW error"); - } + baud = tty_get_baud_rate(port->tty); + if (baud == 0) { + dbg("%s - tty_get_baud_rate says 0 baud", __FUNCTION__); + return; + } + urb_value = BELKIN_SA_BAUD(baud); + /* Clip to maximum speed */ + if (urb_value == 0) + urb_value = 1; + /* Turn it back into a resulting real baud rate */ + baud = BELKIN_SA_BAUD(urb_value); + /* FIXME: Once the tty updates are done then push this back to the tty */ + + if ((cflag & CBAUD) != B0 ) { + if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0) + err("Set baudrate error"); + } else { + /* Disable flow control */ + if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, BELKIN_SA_FLOW_NONE) < 0) + err("Disable flowcontrol error"); + /* Drop RTS and DTR */ + control_state &= ~(TIOCM_DTR | TIOCM_RTS); + if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0) + err("DTR LOW error"); + if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0) + err("RTS LOW error"); } /* set the parity */ @@ -435,7 +427,7 @@ static void belkin_sa_set_termios (struct usb_serial_port *port, struct ktermios case CS6: urb_value = BELKIN_SA_DATA_BITS(6); break; case CS7: urb_value = BELKIN_SA_DATA_BITS(7); break; case CS8: urb_value = BELKIN_SA_DATA_BITS(8); break; - default: err("CSIZE was not CS5-CS8, using default of 8"); + default: dbg("CSIZE was not CS5-CS8, using default of 8"); urb_value = BELKIN_SA_DATA_BITS(8); break; } |