diff options
Diffstat (limited to 'drivers/usb/serial/f81232.c')
| -rw-r--r-- | drivers/usb/serial/f81232.c | 88 |
1 files changed, 21 insertions, 67 deletions
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 6e4eb57d017..c5dc233db2d 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -12,7 +12,6 @@ #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> @@ -47,7 +46,6 @@ MODULE_DEVICE_TABLE(usb, id_table); struct f81232_private { spinlock_t lock; - wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; }; @@ -56,6 +54,13 @@ static void f81232_update_line_status(struct usb_serial_port *port, unsigned char *data, unsigned int actual_length) { + /* + * FIXME: Update port->icount, and call + * + * wake_up_interruptible(&port->port.delta_msr_wait); + * + * on MSR changes. + */ } static void f81232_read_int_callback(struct urb *urb) @@ -100,7 +105,6 @@ static void f81232_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; struct f81232_private *priv = usb_get_serial_port_data(port); - struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; char tty_flag = TTY_NORMAL; unsigned long flags; @@ -112,15 +116,10 @@ static void f81232_process_read_urb(struct urb *urb) line_status = priv->line_status; priv->line_status &= ~UART_STATE_TRANSIENT_MASK; spin_unlock_irqrestore(&priv->lock, flags); - wake_up_interruptible(&priv->delta_msr_wait); if (!urb->actual_length) return; - tty = tty_port_tty_get(&port->port); - if (!tty) - return; - /* break takes precedence over parity, */ /* which takes precedence over framing errors */ if (line_status & UART_BREAK_ERROR) @@ -133,19 +132,19 @@ static void f81232_process_read_urb(struct urb *urb) /* overrun is special, not associated with a char */ if (line_status & UART_OVERRUN_ERROR) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); + tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); if (port->port.console && port->sysrq) { for (i = 0; i < urb->actual_length; ++i) if (!usb_serial_handle_sysrq_char(port, data[i])) - tty_insert_flip_char(tty, data[i], tty_flag); + tty_insert_flip_char(&port->port, data[i], + tty_flag); } else { - tty_insert_flip_string_fixed_flag(tty, data, tty_flag, + tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, urb->actual_length); } - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(&port->port); } static int set_control_lines(struct usb_device *dev, u8 value) @@ -171,11 +170,12 @@ static void f81232_set_termios(struct tty_struct *tty, /* FIXME - Stubbed out for now */ /* Don't change anything if nothing has changed */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* Do the real work here... */ - tty_termios_copy_hw(&tty->termios, old_termios); + if (old_termios) + tty_termios_copy_hw(&tty->termios, old_termios); } static int f81232_tiocmget(struct tty_struct *tty) @@ -193,12 +193,11 @@ static int f81232_tiocmset(struct tty_struct *tty, static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; int result; /* Setup termios */ if (tty) - f81232_set_termios(tty, port, &tmp_termios); + f81232_set_termios(tty, port, NULL); result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { @@ -213,7 +212,6 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port) return result; } - port->port.drain_delay = 256; return 0; } @@ -248,71 +246,25 @@ static int f81232_carrier_raised(struct usb_serial_port *port) return 0; } -static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) -{ - struct f81232_private *priv = usb_get_serial_port_data(port); - unsigned long flags; - unsigned int prevstatus; - unsigned int status; - unsigned int changed; - - spin_lock_irqsave(&priv->lock, flags); - prevstatus = priv->line_status; - spin_unlock_irqrestore(&priv->lock, flags); - - while (1) { - interruptible_sleep_on(&priv->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - - spin_lock_irqsave(&priv->lock, flags); - status = priv->line_status; - spin_unlock_irqrestore(&priv->lock, flags); - - changed = prevstatus ^ status; - - if (((arg & TIOCM_RNG) && (changed & UART_RING)) || - ((arg & TIOCM_DSR) && (changed & UART_DSR)) || - ((arg & TIOCM_CD) && (changed & UART_DCD)) || - ((arg & TIOCM_CTS) && (changed & UART_CTS))) { - return 0; - } - prevstatus = status; - } - /* NOTREACHED */ - return 0; -} - static int f81232_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct serial_struct ser; struct usb_serial_port *port = tty->driver_data; - dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__, - port->number, cmd); - switch (cmd) { case TIOCGSERIAL: memset(&ser, 0, sizeof ser); ser.type = PORT_16654; - ser.line = port->serial->minor; - ser.port = port->number; + ser.line = port->minor; + ser.port = port->port_number; ser.baud_base = 460800; if (copy_to_user((void __user *)arg, &ser, sizeof ser)) return -EFAULT; return 0; - - case TIOCMIWAIT: - dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, - port->number); - return wait_modem_info(port, arg); default: - dev_dbg(&port->dev, "%s not supported = 0x%04x\n", - __func__, cmd); break; } return -ENOIOCTLCMD; @@ -327,10 +279,11 @@ static int f81232_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->delta_msr_wait); usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } @@ -362,6 +315,7 @@ static struct usb_serial_driver f81232_device = { .set_termios = f81232_set_termios, .tiocmget = f81232_tiocmget, .tiocmset = f81232_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, .process_read_urb = f81232_process_read_urb, .read_int_callback = f81232_read_int_callback, .port_probe = f81232_port_probe, |