Signed-off-by: Bart Hartgers --- Index: linux-2.6.32-rc4/drivers/usb/serial/ark3116.c =================================================================== --- linux-2.6.32-rc4.orig/drivers/usb/serial/ark3116.c 2009-10-18 16:20:02.000000000 +0200 +++ linux-2.6.32-rc4/drivers/usb/serial/ark3116.c 2009-10-18 16:20:13.000000000 +0200 @@ -526,32 +526,21 @@ static int ark3116_ioctl(struct tty_stru static int ark3116_tiocmget(struct tty_struct *tty, struct file *file) { struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; - char *buf; - char temp; - - /* seems like serial port status info (RTS, CTS, ...) is stored - * in reg(?) 0x0006 - * pcb connection point 11 = GND -> sets bit4 of response - * pcb connection point 7 = GND -> sets bit6 of response - */ - - buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - dbg("error kmalloc"); - return -ENOMEM; - } - - /* read register */ - ARK3116_RCV_QUIET(serial, 0xFE, 0xC0, 0x0000, 0x0006, buf); - temp = buf[0]; - kfree(buf); - - /* i do not really know if bit4=CTS and bit6=DSR... just a - * quick guess! - */ - return (temp & (1<<4) ? TIOCM_CTS : 0) - | (temp & (1<<6) ? TIOCM_DSR : 0); + struct ark3116_private *priv = usb_get_serial_port_data(port); + + /* read modem status */ + unsigned status = atomic_read(&priv->msr); + /* modem control is output */ + unsigned ctrl = atomic_read(&priv->mcr); + + return (status & UART_MSR_DSR ? TIOCM_DSR : 0) | + (status & UART_MSR_CTS ? TIOCM_CTS : 0) | + (status & UART_MSR_RI ? TIOCM_RI : 0) | + (status & UART_MSR_DCD ? TIOCM_CD : 0) | + (ctrl & UART_MCR_DTR ? TIOCM_DTR : 0) | + (ctrl & UART_MCR_RTS ? TIOCM_RTS : 0) | + (ctrl & UART_MCR_OUT1 ? TIOCM_OUT1 : 0) | + (ctrl & UART_MCR_OUT2 ? TIOCM_OUT2 : 0); } static struct usb_driver ark3116_driver = { -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/