diff options
Diffstat (limited to 'drivers/usb/serial/generic.c')
| -rw-r--r-- | drivers/usb/serial/generic.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 5cdf180cda23..757f0a586ddb 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -63,7 +63,6 @@ static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, static struct usb_serial_driver usb_serial_generic_device = { .driver = { - .owner = THIS_MODULE, .name = "generic", }, .id_table = generic_device_ids, @@ -230,11 +229,11 @@ int usb_serial_generic_write(struct tty_struct *tty, } EXPORT_SYMBOL_GPL(usb_serial_generic_write); -int usb_serial_generic_write_room(struct tty_struct *tty) +unsigned int usb_serial_generic_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned long flags; - int room; + unsigned int room; if (!port->bulk_out_size) return 0; @@ -243,15 +242,15 @@ int usb_serial_generic_write_room(struct tty_struct *tty) room = kfifo_avail(&port->write_fifo); spin_unlock_irqrestore(&port->lock, flags); - dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); + dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); return room; } -int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) +unsigned int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned long flags; - int chars; + unsigned int chars; if (!port->bulk_out_size) return 0; @@ -260,7 +259,7 @@ int usb_serial_generic_chars_in_buffer(struct tty_struct *tty) chars = kfifo_len(&port->write_fifo) + port->tx_bytes; spin_unlock_irqrestore(&port->lock, flags); - dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); + dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); return chars; } EXPORT_SYMBOL_GPL(usb_serial_generic_chars_in_buffer); @@ -345,7 +344,7 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_submit_read_urbs); void usb_serial_generic_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - char *ch = (char *)urb->transfer_buffer; + char *ch = urb->transfer_buffer; int i; if (!urb->actual_length) @@ -355,13 +354,13 @@ void usb_serial_generic_process_read_urb(struct urb *urb) * stuff like 3G modems, so shortcircuit it in the 99.9999999% of * cases where the USB serial is not a console anyway. */ - if (!port->port.console || !port->sysrq) { - tty_insert_flip_string(&port->port, ch, urb->actual_length); - } else { + if (port->sysrq) { for (i = 0; i < urb->actual_length; i++, ch++) { if (!usb_serial_handle_sysrq_char(port, *ch)) tty_insert_flip_char(&port->port, *ch, TTY_NORMAL); } + } else { + tty_insert_flip_string(&port->port, ch, urb->actual_length); } tty_flip_buffer_push(&port->port); } @@ -571,10 +570,10 @@ int usb_serial_generic_get_icount(struct tty_struct *tty, } EXPORT_SYMBOL_GPL(usb_serial_generic_get_icount); -#ifdef CONFIG_MAGIC_SYSRQ +#if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) { - if (port->sysrq && port->port.console) { + if (port->sysrq) { if (ch && time_before(jiffies, port->sysrq)) { handle_sysrq(ch); port->sysrq = 0; @@ -584,16 +583,13 @@ int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) } return 0; } -#else -int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) -{ - return 0; -} -#endif EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); int usb_serial_handle_break(struct usb_serial_port *port) { + if (!port->port.console) + return 0; + if (!port->sysrq) { port->sysrq = jiffies + HZ*5; return 1; @@ -602,6 +598,7 @@ int usb_serial_handle_break(struct usb_serial_port *port) return 0; } EXPORT_SYMBOL_GPL(usb_serial_handle_break); +#endif /** * usb_serial_handle_dcd_change - handle a change of carrier detect state |