diff options
Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 400 |
1 files changed, 214 insertions, 186 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 0cb0d77dc429..8c2d531eedea 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -12,7 +12,8 @@ * This driver was originally based on the ACM driver by Armin Fuerst (which was * based on a driver by Brad Keryan) * - * See Documentation/usb/usb-serial.txt for more information on using this driver + * See Documentation/usb/usb-serial.txt for more information on using this + * driver * */ @@ -28,7 +29,7 @@ #include <linux/spinlock.h> #include <linux/mutex.h> #include <linux/list.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include "pl2303.h" @@ -59,7 +60,8 @@ static struct usb_driver usb_serial_driver = { */ static int debug; -static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */ +/* initially all NULL */ +static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; static DEFINE_MUTEX(table_lock); static LIST_HEAD(usb_serial_driver_list); @@ -76,7 +78,8 @@ struct usb_serial *usb_serial_get_by_index(unsigned index) return serial; } -static struct usb_serial *get_free_serial (struct usb_serial *serial, int num_ports, unsigned int *minor) +static struct usb_serial *get_free_serial(struct usb_serial *serial, + int num_ports, unsigned int *minor) { unsigned int i, j; int good_spot; @@ -122,9 +125,8 @@ static void return_serial(struct usb_serial *serial) if (serial == NULL) return; - for (i = 0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) serial_table[serial->minor + i] = NULL; - } } static void destroy_serial(struct kref *kref) @@ -143,7 +145,7 @@ static void destroy_serial(struct kref *kref) return_serial(serial); for (i = 0; i < serial->num_ports; ++i) - serial->port[i]->open_count = 0; + serial->port[i]->port.count = 0; /* the ports are cleaned up and released in port_release() */ for (i = 0; i < serial->num_ports; ++i) @@ -156,7 +158,8 @@ static void destroy_serial(struct kref *kref) * not get cleaned up in port_release() as it was never registered with * the driver core */ if (serial->num_ports < serial->num_port_pointers) { - for (i = serial->num_ports; i < serial->num_port_pointers; ++i) { + for (i = serial->num_ports; + i < serial->num_port_pointers; ++i) { port = serial->port[i]; if (!port) continue; @@ -167,7 +170,7 @@ static void destroy_serial(struct kref *kref) usb_put_dev(serial->dev); /* free up any memory that we allocated */ - kfree (serial); + kfree(serial); } void usb_serial_put(struct usb_serial *serial) @@ -180,13 +183,13 @@ void usb_serial_put(struct usb_serial *serial) /***************************************************************************** * Driver tty interface functions *****************************************************************************/ -static int serial_open (struct tty_struct *tty, struct file * filp) +static int serial_open (struct tty_struct *tty, struct file *filp) { struct usb_serial *serial; struct usb_serial_port *port; unsigned int portNumber; int retval; - + dbg("%s", __func__); /* get the serial object associated with this tty pointer */ @@ -207,15 +210,15 @@ static int serial_open (struct tty_struct *tty, struct file * filp) retval = -ERESTARTSYS; goto bailout_kref_put; } - - ++port->open_count; + + ++port->port.count; /* set up our port structure making the tty driver * remember our port object, and us it */ tty->driver_data = port; - port->tty = tty; + port->port.tty = tty; - if (port->open_count == 1) { + if (port->port.count == 1) { /* lock this module before we call it * this may fail, which means we must bail out, @@ -228,9 +231,9 @@ static int serial_open (struct tty_struct *tty, struct file * filp) retval = usb_autopm_get_interface(serial->interface); if (retval) goto bailout_module_put; - /* only call the device specific open if this + /* only call the device specific open if this * is the first time the port is opened */ - retval = serial->type->open(port, filp); + retval = serial->type->open(tty, port, filp); if (retval) goto bailout_interface_put; } @@ -243,16 +246,16 @@ bailout_interface_put: bailout_module_put: module_put(serial->type->driver.owner); bailout_mutex_unlock: - port->open_count = 0; + port->port.count = 0; tty->driver_data = NULL; - port->tty = NULL; + port->port.tty = NULL; mutex_unlock(&port->mutex); bailout_kref_put: usb_serial_put(serial); return retval; } -static void serial_close(struct tty_struct *tty, struct file * filp) +static void serial_close(struct tty_struct *tty, struct file *filp) { struct usb_serial_port *port = tty->driver_data; @@ -263,27 +266,30 @@ static void serial_close(struct tty_struct *tty, struct file * filp) mutex_lock(&port->mutex); - if (port->open_count == 0) { + if (port->port.count == 0) { mutex_unlock(&port->mutex); return; } - --port->open_count; - if (port->open_count == 0) - /* only call the device specific close if this + --port->port.count; + if (port->port.count == 0) + /* only call the device specific close if this * port is being closed by the last owner */ - port->serial->type->close(port, filp); + port->serial->type->close(tty, port, filp); - if (port->open_count == (port->console? 1 : 0)) { - if (port->tty) { - if (port->tty->driver_data) - port->tty->driver_data = NULL; - port->tty = NULL; + if (port->port.count == (port->console? 1 : 0)) { + if (port->port.tty) { + if (port->port.tty->driver_data) + port->port.tty->driver_data = NULL; + port->port.tty = NULL; } } - if (port->open_count == 0) { - usb_autopm_put_interface(port->serial->interface); + if (port->port.count == 0) { + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + usb_autopm_put_interface(port->serial->interface); + mutex_unlock(&port->serial->disc_mutex); module_put(port->serial->type->driver.owner); } @@ -291,7 +297,8 @@ static void serial_close(struct tty_struct *tty, struct file * filp) usb_serial_put(port->serial); } -static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count) +static int serial_write(struct tty_struct *tty, const unsigned char *buf, + int count) { struct usb_serial_port *port = tty->driver_data; int retval = -ENODEV; @@ -301,107 +308,112 @@ static int serial_write (struct tty_struct * tty, const unsigned char *buf, int dbg("%s - port %d, %d byte(s)", __func__, port->number, count); - /* open_count is managed under the mutex lock for the tty so cannot - drop to zero until after the last close completes */ - WARN_ON(!port->open_count); + /* count is managed under the mutex lock for the tty so cannot + drop to zero until after the last close completes */ + WARN_ON(!port->port.count); /* pass on to the driver specific version of this function */ - retval = port->serial->type->write(port, buf, count); + retval = port->serial->type->write(tty, port, buf, count); exit: return retval; } -static int serial_write_room (struct tty_struct *tty) +static int serial_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); /* pass on to the driver specific version of this function */ - return port->serial->type->write_room(port); + return port->serial->type->write_room(tty); } -static int serial_chars_in_buffer (struct tty_struct *tty) +static int serial_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; dbg("%s = port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); /* pass on to the driver specific version of this function */ - return port->serial->type->chars_in_buffer(port); + return port->serial->type->chars_in_buffer(tty); } -static void serial_throttle (struct tty_struct * tty) +static void serial_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); /* pass on to the driver specific version of this function */ if (port->serial->type->throttle) - port->serial->type->throttle(port); + port->serial->type->throttle(tty); } -static void serial_unthrottle (struct tty_struct * tty) +static void serial_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); /* pass on to the driver specific version of this function */ if (port->serial->type->unthrottle) - port->serial->type->unthrottle(port); + port->serial->type->unthrottle(tty); } -static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) +static int serial_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; int retval = -ENODEV; dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); - /* pass on to the driver specific version of this function if it is available */ + /* pass on to the driver specific version of this function + if it is available */ if (port->serial->type->ioctl) { lock_kernel(); - retval = port->serial->type->ioctl(port, file, cmd, arg); + retval = port->serial->type->ioctl(tty, file, cmd, arg); unlock_kernel(); - } - else + } else retval = -ENOIOCTLCMD; return retval; } -static void serial_set_termios (struct tty_struct *tty, struct ktermios * old) +static void serial_set_termios(struct tty_struct *tty, struct ktermios *old) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); - /* pass on to the driver specific version of this function if it is available */ + WARN_ON(!port->port.count); + /* pass on to the driver specific version of this function + if it is available */ if (port->serial->type->set_termios) - port->serial->type->set_termios(port, old); + port->serial->type->set_termios(tty, port, old); else tty_termios_copy_hw(tty->termios, old); } -static void serial_break (struct tty_struct *tty, int break_state) +static int serial_break(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); - /* pass on to the driver specific version of this function if it is available */ + WARN_ON(!port->port.count); + /* pass on to the driver specific version of this function + if it is available */ if (port->serial->type->break_ctl) { lock_kernel(); - port->serial->type->break_ctl(port, break_state); + port->serial->type->break_ctl(tty, break_state); unlock_kernel(); } + return 0; } -static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data) +static int serial_read_proc(char *page, char **start, off_t off, int count, + int *eof, void *data) { struct usb_serial *serial; int length = 0; @@ -410,26 +422,29 @@ static int serial_read_proc (char *page, char **start, off_t off, int count, int char tmp[40]; dbg("%s", __func__); - length += sprintf (page, "usbserinfo:1.0 driver:2.0\n"); + length += sprintf(page, "usbserinfo:1.0 driver:2.0\n"); for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { serial = usb_serial_get_by_index(i); if (serial == NULL) continue; - length += sprintf (page+length, "%d:", i); + length += sprintf(page+length, "%d:", i); if (serial->type->driver.owner) - length += sprintf (page+length, " module:%s", module_name(serial->type->driver.owner)); - length += sprintf (page+length, " name:\"%s\"", serial->type->description); - length += sprintf (page+length, " vendor:%04x product:%04x", - le16_to_cpu(serial->dev->descriptor.idVendor), - le16_to_cpu(serial->dev->descriptor.idProduct)); - length += sprintf (page+length, " num_ports:%d", serial->num_ports); - length += sprintf (page+length, " port:%d", i - serial->minor + 1); - + length += sprintf(page+length, " module:%s", + module_name(serial->type->driver.owner)); + length += sprintf(page+length, " name:\"%s\"", + serial->type->description); + length += sprintf(page+length, " vendor:%04x product:%04x", + le16_to_cpu(serial->dev->descriptor.idVendor), + le16_to_cpu(serial->dev->descriptor.idProduct)); + length += sprintf(page+length, " num_ports:%d", + serial->num_ports); + length += sprintf(page+length, " port:%d", + i - serial->minor + 1); usb_make_path(serial->dev, tmp, sizeof(tmp)); - length += sprintf (page+length, " path:%s", tmp); - - length += sprintf (page+length, "\n"); + length += sprintf(page+length, " path:%s", tmp); + + length += sprintf(page+length, "\n"); if ((length + begin) > (off + count)) { usb_serial_put(serial); goto done; @@ -445,31 +460,31 @@ done: if (off >= (length + begin)) return 0; *start = page + (off-begin); - return ((count < begin+length-off) ? count : begin+length-off); + return (count < begin+length-off) ? count : begin+length-off; } -static int serial_tiocmget (struct tty_struct *tty, struct file *file) +static int serial_tiocmget(struct tty_struct *tty, struct file *file) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); if (port->serial->type->tiocmget) - return port->serial->type->tiocmget(port, file); + return port->serial->type->tiocmget(tty, file); return -EINVAL; } -static int serial_tiocmset (struct tty_struct *tty, struct file *file, +static int serial_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); - WARN_ON(!port->open_count); + WARN_ON(!port->port.count); if (port->serial->type->tiocmset) - return port->serial->type->tiocmset(port, file, set, clear); + return port->serial->type->tiocmset(tty, file, set, clear); return -EINVAL; } @@ -482,6 +497,7 @@ void usb_serial_port_softint(struct usb_serial_port *port) { schedule_work(&port->work); } +EXPORT_SYMBOL_GPL(usb_serial_port_softint); static void usb_serial_port_work(struct work_struct *work) { @@ -490,11 +506,11 @@ static void usb_serial_port_work(struct work_struct *work) struct tty_struct *tty; dbg("%s - port %d", __func__, port->number); - + if (!port) return; - tty = port->tty; + tty = port->port.tty; if (!tty) return; @@ -505,7 +521,7 @@ static void port_release(struct device *dev) { struct usb_serial_port *port = to_usb_serial_port(dev); - dbg ("%s - %s", __func__, dev->bus_id); + dbg ("%s - %s", __func__, dev_name(dev)); port_free(port); } @@ -543,9 +559,9 @@ static void port_free(struct usb_serial_port *port) kfree(port); } -static struct usb_serial * create_serial (struct usb_device *dev, - struct usb_interface *interface, - struct usb_serial_driver *driver) +static struct usb_serial *create_serial(struct usb_device *dev, + struct usb_interface *interface, + struct usb_serial_driver *driver) { struct usb_serial *serial; @@ -564,7 +580,7 @@ static struct usb_serial * create_serial (struct usb_device *dev, } static const struct usb_device_id *match_dynamic_id(struct usb_interface *intf, - struct usb_serial_driver *drv) + struct usb_serial_driver *drv) { struct usb_dynid *dynid; @@ -596,7 +612,8 @@ exit: return id; } -static struct usb_serial_driver *search_serial_device(struct usb_interface *iface) +static struct usb_serial_driver *search_serial_device( + struct usb_interface *iface) { const struct usb_device_id *id; struct usb_serial_driver *drv; @@ -614,7 +631,7 @@ static struct usb_serial_driver *search_serial_device(struct usb_interface *ifac int usb_serial_probe(struct usb_interface *interface, const struct usb_device_id *id) { - struct usb_device *dev = interface_to_usbdev (interface); + struct usb_device *dev = interface_to_usbdev(interface); struct usb_serial *serial = NULL; struct usb_serial_port *port; struct usb_host_interface *iface_desc; @@ -625,7 +642,7 @@ int usb_serial_probe(struct usb_interface *interface, struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS]; struct usb_serial_driver *type = NULL; int retval; - int minor; + unsigned int minor; int buffer_size; int i; int num_interrupt_in = 0; @@ -643,7 +660,7 @@ int usb_serial_probe(struct usb_interface *interface, return -ENODEV; } - serial = create_serial (dev, interface, type); + serial = create_serial(dev, interface, type); if (!serial) { unlock_kernel(); dev_err(&interface->dev, "%s - out of memory\n", __func__); @@ -656,8 +673,9 @@ int usb_serial_probe(struct usb_interface *interface, if (!try_module_get(type->driver.owner)) { unlock_kernel(); - dev_err(&interface->dev, "module get failed, exiting\n"); - kfree (serial); + dev_err(&interface->dev, + "module get failed, exiting\n"); + kfree(serial); return -EIO; } @@ -667,8 +685,8 @@ int usb_serial_probe(struct usb_interface *interface, if (retval) { unlock_kernel(); - dbg ("sub driver rejected device"); - kfree (serial); + dbg("sub driver rejected device"); + kfree(serial); return retval; } } @@ -709,7 +727,7 @@ int usb_serial_probe(struct usb_interface *interface, } #if defined(CONFIG_USB_SERIAL_PL2303) || defined(CONFIG_USB_SERIAL_PL2303_MODULE) - /* BEGIN HORRIBLE HACK FOR PL2303 */ + /* BEGIN HORRIBLE HACK FOR PL2303 */ /* this is needed due to the looney way its endpoints are set up */ if (((le16_to_cpu(dev->descriptor.idVendor) == PL2303_VENDOR_ID) && (le16_to_cpu(dev->descriptor.idProduct) == PL2303_PRODUCT_ID)) || @@ -738,7 +756,7 @@ int usb_serial_probe(struct usb_interface *interface, if (num_bulk_in == 0 || num_bulk_out == 0) { unlock_kernel(); dev_info(&interface->dev, "PL-2303 hack: descriptors matched but endpoints did not\n"); - kfree (serial); + kfree(serial); return -ENODEV; } } @@ -750,8 +768,9 @@ int usb_serial_probe(struct usb_interface *interface, num_ports = num_bulk_out; if (num_ports == 0) { unlock_kernel(); - dev_err(&interface->dev, "Generic device with no bulk out, not allowed.\n"); - kfree (serial); + dev_err(&interface->dev, + "Generic device with no bulk out, not allowed.\n"); + kfree(serial); return -EIO; } } @@ -761,11 +780,12 @@ int usb_serial_probe(struct usb_interface *interface, if (type->calc_num_ports) { if (!try_module_get(type->driver.owner)) { unlock_kernel(); - dev_err(&interface->dev, "module get failed, exiting\n"); - kfree (serial); + dev_err(&interface->dev, + "module get failed, exiting\n"); + kfree(serial); return -EIO; } - num_ports = type->calc_num_ports (serial); + num_ports = type->calc_num_ports(serial); module_put(type->driver.owner); } if (!num_ports) @@ -783,7 +803,8 @@ int usb_serial_probe(struct usb_interface *interface, type->description); /* create our ports, we need as many as the max endpoints */ - /* we don't use num_ports here cauz some devices have more endpoint pairs than ports */ + /* we don't use num_ports here because some devices have more + endpoint pairs than ports */ max_endpoints = max(num_bulk_in, num_bulk_out); max_endpoints = max(max_endpoints, num_interrupt_in); max_endpoints = max(max_endpoints, num_interrupt_out); @@ -791,7 +812,8 @@ int usb_serial_probe(struct usb_interface *interface, serial->num_port_pointers = max_endpoints; unlock_kernel(); - dbg("%s - setting up %d port structures for this device", __func__, max_endpoints); + dbg("%s - setting up %d port structures for this device", + __func__, max_endpoints); for (i = 0; i < max_endpoints; ++i) { port = kzalloc(sizeof(struct usb_serial_port), GFP_KERNEL); if (!port) @@ -807,7 +829,7 @@ int usb_serial_probe(struct usb_interface *interface, for (i = 0; i < num_bulk_in; ++i) { endpoint = bulk_in_endpoint[i]; port = serial->port[i]; - port->read_urb = usb_alloc_urb (0, GFP_KERNEL); + port->read_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->read_urb) { dev_err(&interface->dev, "No free urbs available\n"); goto probe_error; @@ -815,17 +837,17 @@ int usb_serial_probe(struct usb_interface *interface, buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); port->bulk_in_size = buffer_size; port->bulk_in_endpointAddress = endpoint->bEndpointAddress; - port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); + port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!port->bulk_in_buffer) { - dev_err(&interface->dev, "Couldn't allocate bulk_in_buffer\n"); + dev_err(&interface->dev, + "Couldn't allocate bulk_in_buffer\n"); goto probe_error; } - usb_fill_bulk_urb (port->read_urb, dev, - usb_rcvbulkpipe (dev, - endpoint->bEndpointAddress), - port->bulk_in_buffer, buffer_size, - serial->type->read_bulk_callback, - port); + usb_fill_bulk_urb(port->read_urb, dev, + usb_rcvbulkpipe(dev, + endpoint->bEndpointAddress), + port->bulk_in_buffer, buffer_size, + serial->type->read_bulk_callback, port); } for (i = 0; i < num_bulk_out; ++i) { @@ -839,17 +861,17 @@ int usb_serial_probe(struct usb_interface *interface, buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); port->bulk_out_size = buffer_size; port->bulk_out_endpointAddress = endpoint->bEndpointAddress; - port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL); + port->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!port->bulk_out_buffer) { - dev_err(&interface->dev, "Couldn't allocate bulk_out_buffer\n"); + dev_err(&interface->dev, + "Couldn't allocate bulk_out_buffer\n"); goto probe_error; } - usb_fill_bulk_urb (port->write_urb, dev, - usb_sndbulkpipe (dev, - endpoint->bEndpointAddress), - port->bulk_out_buffer, buffer_size, - serial->type->write_bulk_callback, - port); + usb_fill_bulk_urb(port->write_urb, dev, + usb_sndbulkpipe(dev, + endpoint->bEndpointAddress), + port->bulk_out_buffer, buffer_size, + serial->type->write_bulk_callback, port); } if (serial->type->read_int_callback) { @@ -858,73 +880,82 @@ int usb_serial_probe(struct usb_interface *interface, port = serial->port[i]; port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->interrupt_in_urb) { - dev_err(&interface->dev, "No free urbs available\n"); + dev_err(&interface->dev, + "No free urbs available\n"); goto probe_error; } buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); - port->interrupt_in_endpointAddress = endpoint->bEndpointAddress; - port->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL); + port->interrupt_in_endpointAddress = + endpoint->bEndpointAddress; + port->interrupt_in_buffer = kmalloc(buffer_size, + GFP_KERNEL); if (!port->interrupt_in_buffer) { - dev_err(&interface->dev, "Couldn't allocate interrupt_in_buffer\n"); + dev_err(&interface->dev, + "Couldn't allocate interrupt_in_buffer\n"); goto probe_error; } - usb_fill_int_urb (port->interrupt_in_urb, dev, - usb_rcvintpipe (dev, - endpoint->bEndpointAddress), - port->interrupt_in_buffer, buffer_size, - serial->type->read_int_callback, port, - endpoint->bInterval); + usb_fill_int_urb(port->interrupt_in_urb, dev, + usb_rcvintpipe(dev, + endpoint->bEndpointAddress), + port->interrupt_in_buffer, buffer_size, + serial->type->read_int_callback, port, + endpoint->bInterval); } } else if (num_interrupt_in) { dbg("the device claims to support interrupt in transfers, but read_int_callback is not defined"); } - + if (serial->type->write_int_callback) { for (i = 0; i < num_interrupt_out; ++i) { endpoint = interrupt_out_endpoint[i]; port = serial->port[i]; port->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->interrupt_out_urb) { - dev_err(&interface->dev, "No free urbs available\n"); + dev_err(&interface->dev, + "No free urbs available\n"); goto probe_error; } buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); port->interrupt_out_size = buffer_size; - port->interrupt_out_endpointAddress = endpoint->bEndpointAddress; - port->interrupt_out_buffer = kmalloc (buffer_size, GFP_KERNEL); + port->interrupt_out_endpointAddress = + endpoint->bEndpointAddress; + port->interrupt_out_buffer = kmalloc(buffer_size, + GFP_KERNEL); if (!port->interrupt_out_buffer) { - dev_err(&interface->dev, "Couldn't allocate interrupt_out_buffer\n"); + dev_err(&interface->dev, + "Couldn't allocate interrupt_out_buffer\n"); goto probe_error; } - usb_fill_int_urb (port->interrupt_out_urb, dev, - usb_sndintpipe (dev, - endpoint->bEndpointAddress), - port->interrupt_out_buffer, buffer_size, - serial->type->write_int_callback, port, - endpoint->bInterval); + usb_fill_int_urb(port->interrupt_out_urb, dev, + usb_sndintpipe(dev, + endpoint->bEndpointAddress), + port->interrupt_out_buffer, buffer_size, + serial->type->write_int_callback, port, + endpoint->bInterval); } } else if (num_interrupt_out) { dbg("the device claims to support interrupt out transfers, but write_int_callback is not defined"); } - + /* if this device type has an attach function, call it */ if (type->attach) { if (!try_module_get(type->driver.owner)) { - dev_err(&interface->dev, "module get failed, exiting\n"); + dev_err(&interface->dev, + "module get failed, exiting\n"); goto probe_error; } - retval = type->attach (serial); + retval = type->attach(serial); module_put(type->driver.owner); if (retval < 0) goto probe_error; if (retval > 0) { - /* quietly accept this device, but don't bind to a serial port - * as it's about to disappear */ + /* quietly accept this device, but don't bind to a + serial port as it's about to disappear */ goto exit; } } - if (get_free_serial (serial, num_ports, &minor) == NULL) { + if (get_free_serial(serial, num_ports, &minor) == NULL) { dev_err(&interface->dev, "No more free serial devices\n"); goto probe_error; } @@ -938,19 +969,19 @@ int usb_serial_probe(struct usb_interface *interface, port->dev.bus = &usb_serial_bus_type; port->dev.release = &port_release; - snprintf (&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number); - dbg ("%s - registering %s", __func__, port->dev.bus_id); + dev_set_name(&port->dev, "ttyUSB%d", port->number); + dbg ("%s - registering %s", __func__, dev_name(&port->dev)); retval = device_register(&port->dev); if (retval) dev_err(&port->dev, "Error registering port device, " "continuing\n"); } - usb_serial_console_init (debug, minor); + usb_serial_console_init(debug, minor); exit: /* success */ - usb_set_intfdata (interface, serial); + usb_set_intfdata(interface, serial); return 0; probe_error: @@ -986,29 +1017,30 @@ probe_error: /* free up any memory that we allocated */ for (i = 0; i < serial->num_port_pointers; ++i) kfree(serial->port[i]); - kfree (serial); + kfree(serial); return -EIO; } +EXPORT_SYMBOL_GPL(usb_serial_probe); void usb_serial_disconnect(struct usb_interface *interface) { int i; - struct usb_serial *serial = usb_get_intfdata (interface); + struct usb_serial *serial = usb_get_intfdata(interface); struct device *dev = &interface->dev; struct usb_serial_port *port; usb_serial_console_disconnect(serial); - dbg ("%s", __func__); + dbg("%s", __func__); mutex_lock(&serial->disc_mutex); - usb_set_intfdata (interface, NULL); + usb_set_intfdata(interface, NULL); /* must set a flag, to signal subdrivers */ serial->disconnected = 1; for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; if (port) { - if (port->tty) - tty_hangup(port->tty); + if (port->port.tty) + tty_hangup(port->port.tty); kill_traffic(port); } } @@ -1018,6 +1050,7 @@ void usb_serial_disconnect(struct usb_interface *interface) usb_serial_put(serial); dev_info(dev, "device disconnected\n"); } +EXPORT_SYMBOL_GPL(usb_serial_disconnect); int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) { @@ -1076,9 +1109,8 @@ static int __init usb_serial_init(void) return -ENOMEM; /* Initialize our global data */ - for (i = 0; i < SERIAL_TTY_MINORS; ++i) { + for (i = 0; i < SERIAL_TTY_MINORS; ++i) serial_table[i] = NULL; - } result = bus_register(&usb_serial_bus_type); if (result) { @@ -1093,9 +1125,11 @@ static int __init usb_serial_init(void) usb_serial_tty_driver->minor_start = 0; usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; - usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + usb_serial_tty_driver->flags = TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV; usb_serial_tty_driver->init_termios = tty_std_termios; - usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD + | HUPCL | CLOCAL; usb_serial_tty_driver->init_termios.c_ispeed = 9600; usb_serial_tty_driver->init_termios.c_ospeed = 9600; tty_set_operations(usb_serial_tty_driver, &serial_ops); @@ -1133,7 +1167,7 @@ exit_reg_driver: bus_unregister(&usb_serial_bus_type); exit_bus: - err ("%s - returning with error %d", __func__, result); + err("%s - returning with error %d", __func__, result); put_tty_driver(usb_serial_tty_driver); return result; } @@ -1160,7 +1194,7 @@ module_exit(usb_serial_exit); if (!type->function) { \ type->function = usb_serial_generic_##function; \ dbg("Had to override the " #function \ - " usb serial operation with the generic one.");\ + " usb serial operation with the generic one.");\ } \ } while (0) @@ -1177,8 +1211,9 @@ static void fixup_generic(struct usb_serial_driver *device) set_to_generic_if_null(device, resume); } -int usb_serial_register(struct usb_serial_driver *driver) /* must be called with BKL held */ +int usb_serial_register(struct usb_serial_driver *driver) { + /* must be called with BKL held */ int retval; fixup_generic(driver); @@ -1191,37 +1226,30 @@ int usb_serial_register(struct usb_serial_driver *driver) /* must be called with retval = usb_serial_bus_register(driver); if (retval) { - err("problem %d when registering driver %s", retval, driver->description); + err("problem %d when registering driver %s", + retval, driver->description); list_del(&driver->driver_list); - } - else - info("USB Serial support registered for %s", driver->description); + } else + info("USB Serial support registered for %s", + driver->description); return retval; } +EXPORT_SYMBOL_GPL(usb_serial_register); -void usb_serial_deregister(struct usb_serial_driver *device) /* must be called with BKL held */ +void usb_serial_deregister(struct usb_serial_driver *device) { + /* must be called with BKL held */ info("USB Serial deregistering driver %s", device->description); list_del(&device->driver_list); usb_serial_bus_deregister(device); } - - - -/* If the usb-serial core is built into the core, the usb-serial drivers - need these symbols to load properly as modules. */ -EXPORT_SYMBOL_GPL(usb_serial_register); EXPORT_SYMBOL_GPL(usb_serial_deregister); -EXPORT_SYMBOL_GPL(usb_serial_probe); -EXPORT_SYMBOL_GPL(usb_serial_disconnect); -EXPORT_SYMBOL_GPL(usb_serial_port_softint); - /* Module information */ -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); |