diff options
Diffstat (limited to 'package/system/sierra-directip/src/sierra.c')
| -rw-r--r-- | package/system/sierra-directip/src/sierra.c | 1409 |
1 files changed, 0 insertions, 1409 deletions
diff --git a/package/system/sierra-directip/src/sierra.c b/package/system/sierra-directip/src/sierra.c deleted file mode 100644 index 9752d1142..000000000 --- a/package/system/sierra-directip/src/sierra.c +++ /dev/null @@ -1,1409 +0,0 @@ -/* - USB Driver for Sierra Wireless - - Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>, - - Copyright (C) 2008 - 2011 Elina Pasheva, Matthew Safar, Rory Filer - <linux@sierrawireless.com> - - IMPORTANT DISCLAIMER: This driver is not commercially supported by - Sierra Wireless. Use at your own risk. - - This driver is free software; you can redistribute it and/or modify - it under the terms of Version 2 of the GNU General Public License as - published by the Free Software Foundation. - - Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de> - Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> -*/ -/* Uncomment to log function calls */ -/*#define DEBUG*/ -/* Uncomment to force power level set to auto when attaching a device */ -/*#define POWER_LEVEL_AUTO*/ - -/* Sierra driver - kernel 3.0 */ -#define DRIVER_VERSION "v.1.7.40" -#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" -#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" - -#include <linux/kernel.h> -#include <linux/jiffies.h> -#include <linux/errno.h> -#include <linux/tty.h> -#include <linux/slab.h> -#include <linux/tty_flip.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> -#include <asm/unaligned.h> - -#define SWIMS_USB_REQUEST_SetPower 0x00 -#define SWIMS_USB_REQUEST_GetFwAttr 0x06 -#define SWIMS_USB_REQUEST_SetNmea 0x07 -#define USB_REQUEST_TYPE_CLASS 0xA1 -#define USB_REQUEST_IFACE 0x20 - -#define N_IN_URB_HM 8 -#define N_OUT_URB_HM 64 -#define N_IN_URB 4 -#define N_OUT_URB 4 -#define IN_BUFLEN 4096 - -#define MAX_TRANSFER (PAGE_SIZE - 512) -/* MAX_TRANSFER is chosen so that the VM is not stressed by - allocations > PAGE_SIZE and the number of packets in a page - is an integer 512 is the largest possible packet on EHCI */ - -#define SWI_FW_ATTR_PM_MASK 0x02 -/* PORTION_LEN defines the length of device attribute buffer */ -#define PORTION_LEN 4096 - -static int debug; -static int nmea; - -/* sysfs attributes */ -static int sierra_create_sysfs_attrs(struct usb_serial_port *port); -static int sierra_remove_sysfs_attrs(struct usb_serial_port *port); - -/* Used in interface blacklisting */ -struct sierra_iface_info { - const u32 infolen; /* number of interface numbers on blacklist */ - const u8 *ifaceinfo; /* pointer to the array holding the numbers */ -}; - -/* per interface statistics */ -struct sierra_intf_stats { - atomic_t rx_bytes; /* received bytes */ - atomic_t indat_cb_cnt; /* indat callback count */ - atomic_t indat_cb_fail; /* indat cb with error */ - - atomic_t tx_bytes; /* transmitted bytes */ - atomic_t write_cnt; /* no. of writes */ - atomic_t write_err; /* no. of failed writes */ - - atomic_t delayed_writes; /* no. of delayed writes */ - atomic_t delayed_write_err; /* no. of delayed write errs */ - - atomic_t outdat_cb_cnt; /* outdat callback count */ - atomic_t outdat_cb_fail; /* outdat cb with error */ - -}; - -struct sierra_intf_private { - spinlock_t susp_lock; - unsigned int suspended:1; - int in_flight; - - struct sierra_intf_stats stats; -}; - -static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) -{ - int result; - dev_dbg(&udev->dev, "%s\n", __func__); - result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - SWIMS_USB_REQUEST_SetPower, /* __u8 request */ - USB_TYPE_VENDOR, /* __u8 request type */ - swiState, /* __u16 value */ - 0, /* __u16 index */ - NULL, /* void *data */ - 0, /* __u16 size */ - USB_CTRL_SET_TIMEOUT); /* int timeout */ - return result; -} - -static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) -{ - int result; - dev_dbg(&udev->dev, "%s\n", __func__); - result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ - USB_TYPE_VENDOR, /* __u8 request type */ - enable, /* __u16 value */ - 0x0000, /* __u16 index */ - NULL, /* void *data */ - 0, /* __u16 size */ - USB_CTRL_SET_TIMEOUT); /* int timeout */ - return result; -} - -static int sierra_get_fw_attr(struct usb_device *udev, u16 *data) -{ - int result; - u16 *attrdata; - - dev_dbg(&udev->dev, "%s\n", __func__); - - attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL); - if (!attrdata) - return -ENOMEM; - - result = usb_control_msg(udev, - usb_rcvctrlpipe(udev, 0), - SWIMS_USB_REQUEST_GetFwAttr, /* __u8 request*/ - USB_TYPE_VENDOR | USB_DIR_IN, /* request type*/ - 0x0000, /* __u16 value */ - 0x0000, /* __u16 index */ - attrdata, /* void *data */ - sizeof(*attrdata), /* _u16 size */ - USB_CTRL_SET_TIMEOUT); /* in timeout */ - - if (result < 0) { - kfree(attrdata); - return -EIO; - } - - *data = *attrdata; - - kfree(attrdata); - return result; -} - -static int sierra_calc_num_ports(struct usb_serial *serial) -{ - int num_ports = 0; - u8 ifnum, numendpoints; - - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; - numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; - - /* Dummy interface present on some SKUs should be ignored */ - if (ifnum == 0x99) - num_ports = 0; - else if (numendpoints <= 3) - num_ports = 1; - else - num_ports = (numendpoints-1)/2; - return num_ports; -} - -static int is_blacklisted(const u8 ifnum, - const struct sierra_iface_info *blacklist) -{ - const u8 *info; - int i; - - if (blacklist) { - info = blacklist->ifaceinfo; - - for (i = 0; i < blacklist->infolen; i++) { - if (info[i] == ifnum) - return 1; - } - } - return 0; -} - -static int is_himemory(const u8 ifnum, - const struct sierra_iface_info *himemorylist) -{ - const u8 *info; - int i; - - if (himemorylist) { - info = himemorylist->ifaceinfo; - - for (i=0; i < himemorylist->infolen; i++) { - if (info[i] == ifnum) - return 1; - } - } - return 0; -} - -static int sierra_calc_interface(struct usb_serial *serial) -{ - int interface; - struct usb_interface *p_interface; - struct usb_host_interface *p_host_interface; - - /* Get the interface structure pointer from the serial struct */ - p_interface = serial->interface; - - /* Get a pointer to the host interface structure */ - p_host_interface = p_interface->cur_altsetting; - - /* read the interface descriptor for this active altsetting - * to find out the interface number we are on */ - interface = p_host_interface->desc.bInterfaceNumber; - - return interface; -} - -static int sierra_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - int result = 0; - struct usb_device *udev; - struct sierra_intf_private *intfdata; - u8 ifnum; - - udev = serial->dev; - dev_dbg(&udev->dev, "%s\n", __func__); - - ifnum = sierra_calc_interface(serial); - /* - * If this interface supports more than 1 alternate - * select the 2nd one - */ - if (serial->interface->num_altsetting == 2) { - dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n", - ifnum); - /* We know the alternate setting is for composite USB interface - * modems - */ - usb_set_interface(udev, ifnum, 1); - } - - /* ifnum could have changed - by calling usb_set_interface */ - ifnum = sierra_calc_interface(serial); - - if (is_blacklisted(ifnum, - (struct sierra_iface_info *)id->driver_info)) { - dev_dbg(&serial->dev->dev, - "Ignoring blacklisted interface #%d\n", ifnum); - return -ENODEV; - } - - intfdata = serial->private = kzalloc(sizeof(struct sierra_intf_private), - GFP_KERNEL); - if (!intfdata) - return -ENOMEM; - spin_lock_init(&intfdata->susp_lock); - - return result; -} - -/* interfaces with higher memory requirements */ -static const u8 hi_memory_typeA_ifaces[] = { 0, 2 }; -static const struct sierra_iface_info typeA_interface_list = { - .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces), - .ifaceinfo = hi_memory_typeA_ifaces, -}; - -static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 }; -static const struct sierra_iface_info typeB_interface_list = { - .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces), - .ifaceinfo = hi_memory_typeB_ifaces, -}; - -/* 'blacklist' of interfaces not served by this driver */ -static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; -static const struct sierra_iface_info direct_ip_interface_blacklist = { - .infolen = ARRAY_SIZE( direct_ip_non_serial_ifaces ), - .ifaceinfo = direct_ip_non_serial_ifaces, -}; - -static const struct usb_device_id id_table [] = { - { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ - { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */ - { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */ - { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */ - - { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ - { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ - { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ - { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ - { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ - { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */ - { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ - { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */ - { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ - { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ - { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ - { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ - { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U/3G */ - /* Sierra Wireless MC5728 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0400, 0xFF, 0xFF, 0xFF) }, - - /* Sierra Wireless C597 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, - /* Sierra Wireless T598 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, - { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */ - { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */ - { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */ - { USB_DEVICE(0x114F, 0x6000) }, /* Sierra Wireless Q26 Elite */ - - { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ - { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ - { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ - { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */ - { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */ - { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */ - { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ - { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */ - { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ - { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */ - { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ - { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ - { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */ - { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ - { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ - { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */ - { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */ - { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */ - { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */ - { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ - { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ - /* Sierra Wireless MC8790, MC8791, MC8792 Composite */ - { USB_DEVICE(0x1199, 0x683C) }, - { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */ - /* Sierra Wireless MC8790, MC8791, MC8792 */ - { USB_DEVICE(0x1199, 0x683E) }, - { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ - { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ - { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ - { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ - { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ - { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ - { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ - { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ - /* Sierra Wireless C885 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless C22/C33 */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, - /* Sierra Wireless HSPA Non-Composite Device */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, - { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */ - /* Sierra Wireless Direct IP modems */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF), - .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist - }, - /* AT&T Direct IP modems */ - { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF), - .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist - }, - /* Sierra Wireless Direct IP LTE modems */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF), - .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist - }, - /* AT&T Direct IP LTE modems */ - { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF), - .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist - }, - /* Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */ - { USB_DEVICE(0x413C, 0x8133) }, - - { } -}; -MODULE_DEVICE_TABLE(usb, id_table); - -/* per port private data */ -struct sierra_port_private { - spinlock_t lock; /* lock the structure */ - int outstanding_urbs; /* number of out urbs in flight */ - - struct usb_anchor active; - struct usb_anchor delayed; - - int num_out_urbs; - int num_in_urbs; - /* Input endpoints and buffers for this port */ - struct urb *in_urbs[N_IN_URB_HM]; - - /* Settings for the port */ - int rts_state; /* Handshaking pins (outputs) */ - int dtr_state; - int cts_state; /* Handshaking pins (inputs) */ - int dsr_state; - int dcd_state; - int ri_state; - unsigned int opened:1; -}; - -static int sierra_send_setup(struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - __u16 interface = 0; - int val = 0; - int do_send = 0; - int retval; - - dev_dbg(&port->dev, "%s\n", __func__); - - if (portdata->dtr_state) - val |= 0x01; - if (portdata->rts_state) - val |= 0x02; - - /* If composite device then properly report interface */ - if (serial->num_ports == 1) { - interface = sierra_calc_interface(serial); - /* Control message is sent only to interfaces with - * interrupt_in endpoints - */ - if (port->interrupt_in_urb) { - /* send control message */ - do_send = 1; - } - } - - /* Otherwise the need to do non-composite mapping */ - else { - if (port->bulk_out_endpointAddress == 2) - interface = 0; - else if (port->bulk_out_endpointAddress == 4) - interface = 1; - else if (port->bulk_out_endpointAddress == 5) - interface = 2; - - do_send = 1; - } - if (!do_send) - return 0; - - usb_autopm_get_interface(serial->interface); - retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT); - usb_autopm_put_interface(serial->interface); - - return retval; -} - -static void sierra_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, struct ktermios *old_termios) -{ - dev_dbg(&port->dev, "%s\n", __func__); - tty_termios_copy_hw(tty->termios, old_termios); - sierra_send_setup(port); -} - -static int sierra_tiocmget(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - unsigned int value; - struct sierra_port_private *portdata; - - dev_dbg(&port->dev, "%s\n", __func__); - portdata = usb_get_serial_port_data(port); - - value = ((portdata->rts_state) ? TIOCM_RTS : 0) | - ((portdata->dtr_state) ? TIOCM_DTR : 0) | - ((portdata->cts_state) ? TIOCM_CTS : 0) | - ((portdata->dsr_state) ? TIOCM_DSR : 0) | - ((portdata->dcd_state) ? TIOCM_CAR : 0) | - ((portdata->ri_state) ? TIOCM_RNG : 0); - - return value; -} - -static int sierra_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct usb_serial_port *port = tty->driver_data; - struct sierra_port_private *portdata; - - portdata = usb_get_serial_port_data(port); - - if (set & TIOCM_RTS) - portdata->rts_state = 1; - if (set & TIOCM_DTR) - portdata->dtr_state = 1; - - if (clear & TIOCM_RTS) - portdata->rts_state = 0; - if (clear & TIOCM_DTR) - portdata->dtr_state = 0; - return sierra_send_setup(port); -} - -static void sierra_release_urb(struct urb *urb) -{ - struct usb_serial_port *port; - if (urb) { - port = urb->context; - dev_dbg(&port->dev, "%s: %p\n", __func__, urb); - usb_free_urb(urb); - } -} - -/* Sysfs Attributes */ - -static ssize_t show_suspend_status(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct usb_serial_port *port; - struct sierra_port_private *portdata; - struct sierra_intf_private *intfdata; - unsigned long flags; - unsigned int flag_suspended = 0; - - port = to_usb_serial_port(dev); - portdata = usb_get_serial_port_data(port); - intfdata = port->serial->private; - - spin_lock_irqsave(&intfdata->susp_lock, flags); - flag_suspended = intfdata->suspended; - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - - return snprintf(buf, PORTION_LEN, "%i\n", flag_suspended); -} - -static ssize_t show_stats(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct usb_serial_port *port; - struct sierra_intf_private *intfdata; - - port = to_usb_serial_port(dev); - intfdata = port->serial->private; - - return snprintf(buf, PORTION_LEN, - "rx: %i B\tindat: %i\tindat err: %i\n" - "tx: %i B\toutdat: %i\toutdat err: %i\n" - "writes: %i\t\twrite err: %i\n" - "delayed writes: %i\tdelayed write err: %i\n", - atomic_read(&intfdata->stats.rx_bytes), atomic_read(&intfdata->stats.indat_cb_cnt), atomic_read(&intfdata->stats.indat_cb_fail), - atomic_read(&intfdata->stats.tx_bytes), atomic_read(&intfdata->stats.outdat_cb_cnt), atomic_read(&intfdata->stats.outdat_cb_fail), - atomic_read(&intfdata->stats.write_cnt), atomic_read(&intfdata->stats.write_err), - atomic_read(&intfdata->stats.delayed_writes), atomic_read(&intfdata->stats.delayed_write_err) - ); -} - -/* Read only suspend status */ -static DEVICE_ATTR(suspend_status, S_IWUSR | S_IRUGO, show_suspend_status, - NULL); - -/* Read only statistics */ -static DEVICE_ATTR(stats, S_IWUSR | S_IRUGO, show_stats, NULL); - -static int sierra_create_sysfs_attrs(struct usb_serial_port *port) -{ - int result = 0; - - result = device_create_file(&port->dev, &dev_attr_stats); - if (unlikely (result < 0)) - return result; - return device_create_file(&port->dev, &dev_attr_suspend_status); -} - -static int sierra_remove_sysfs_attrs(struct usb_serial_port *port) -{ - device_remove_file(&port->dev, &dev_attr_stats); - device_remove_file(&port->dev, &dev_attr_suspend_status); - return 0; -} - -static void sierra_outdat_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - struct sierra_intf_private *intfdata; - int status = urb->status; - - dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); - intfdata = port->serial->private; - - usb_autopm_put_interface_async(port->serial->interface); - - atomic_inc(&intfdata->stats.outdat_cb_cnt); - - if (status) { - dev_dbg(&port->dev, "%s - nonzero write bulk status " - "received: %d\n", __func__, status); - atomic_inc(&intfdata->stats.outdat_cb_fail); - } - - spin_lock(&portdata->lock); - --portdata->outstanding_urbs; - spin_unlock(&portdata->lock); - - spin_lock(&intfdata->susp_lock); - --intfdata->in_flight; - spin_unlock(&intfdata->susp_lock); - - usb_serial_port_softint(port); -} - -/* Write */ -static int sierra_write(struct tty_struct *tty, - struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - struct sierra_intf_private *intfdata; - struct usb_serial *serial = port->serial; - unsigned long flags; - unsigned char *buffer; - struct urb *urb; - size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER); - int retval = 0; - - /* verify that we actually have some data to write */ - if (count == 0) - return 0; - - dev_dbg(&port->dev, "%s: write (%zu bytes)\n", __func__, writesize); - - intfdata = serial->private; - - spin_lock_irqsave(&portdata->lock, flags); - if (portdata->outstanding_urbs > portdata->num_out_urbs) { - spin_unlock_irqrestore(&portdata->lock, flags); - dev_dbg(&port->dev, "%s - write limit hit\n", __func__); - return 0; - } - portdata->outstanding_urbs++; - spin_unlock_irqrestore(&portdata->lock, flags); - - retval = usb_autopm_get_interface_async(serial->interface); - if (unlikely(retval < 0)) { - spin_lock_irqsave(&portdata->lock, flags); - portdata->outstanding_urbs--; - spin_unlock_irqrestore(&portdata->lock, flags); - return retval; - } - - buffer = kmalloc(writesize, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "out of memory\n"); - spin_lock_irqsave(&portdata->lock, flags); - --portdata->outstanding_urbs; - spin_unlock_irqrestore(&portdata->lock, flags); - usb_autopm_put_interface_async(serial->interface); - return -ENOMEM; - } - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "no more free urbs\n"); - kfree(buffer); - spin_lock_irqsave(&portdata->lock, flags); - --portdata->outstanding_urbs; - spin_unlock_irqrestore(&portdata->lock, flags); - usb_autopm_put_interface_async(serial->interface); - return -ENOMEM; - } - - memcpy(buffer, buf, writesize); - - usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer); - - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, writesize, sierra_outdat_callback, port); - - /* Handle the need to send a zero length packet and release the - * transfer buffer - */ - urb->transfer_flags |= (URB_ZERO_PACKET | URB_FREE_BUFFER); - - spin_lock_irqsave(&intfdata->susp_lock, flags); - - if (intfdata->suspended) { - usb_anchor_urb(urb, &portdata->delayed); - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - /* release our reference to this urb, the USB core will - * eventually free it entirely */ - usb_free_urb(urb); - return writesize; - } - usb_anchor_urb(urb, &portdata->active); - - /* send it down the pipe */ - retval = usb_submit_urb(urb, GFP_ATOMIC); - if (retval) { - usb_unanchor_urb(urb); - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - - dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " - "with status = %d\n", __func__, retval); - usb_free_urb(urb); - spin_lock_irqsave(&portdata->lock, flags); - --portdata->outstanding_urbs; - spin_unlock_irqrestore(&portdata->lock, flags); - usb_autopm_put_interface_async(serial->interface); - atomic_inc(&intfdata->stats.write_err); - return retval; - } else { - intfdata->in_flight++; - spin_unlock_irqrestore(&intfdata->susp_lock, flags); - atomic_inc(&intfdata->stats.write_cnt); - atomic_add(writesize, &intfdata->stats.tx_bytes); - } - /* release our reference to this urb, the USB core will eventually - * free it entirely */ - usb_free_urb(urb); - - return writesize; -} - -static void sierra_indat_callback(struct urb *urb) -{ - int err; - int endpoint; - struct usb_serial_port *port = urb->context; - struct tty_struct *tty; - struct sierra_intf_private *intfdata; - unsigned char *data = urb->transfer_buffer; - int status = urb->status; - - endpoint = usb_pipeendpoint(urb->pipe); - - dev_dbg(&port->dev, "%s: %p\n", __func__, urb); - - intfdata = port->serial->private; - - atomic_inc(&intfdata->stats.indat_cb_cnt); /* indat calls */ - - if (status) { - dev_dbg(&port->dev, "%s: nonzero status: %d on" - " endpoint %02x\n", __func__, status, endpoint); - atomic_inc(&intfdata->stats.indat_cb_fail); /* indat fails */ - } else { - if (urb->actual_length) { - tty = tty_port_tty_get(&port->port); - if (tty) { - tty_insert_flip_string(tty, data, - urb->actual_length); - tty_flip_buffer_push(tty); - - tty_kref_put(tty); - /* tty invalid after this point */ - /* rx'd bytes */ - atomic_add(urb->actual_length, - &intfdata->stats.rx_bytes); - usb_serial_debug_data(debug, &port->dev, - __func__, urb->actual_length, data); - } - } else { - dev_dbg(&port->dev, "%s: empty read urb" - " received\n", __func__); - } - } - - /* Resubmit urb so we continue receiving */ - if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) { - usb_mark_last_busy(port->serial->dev); - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err && err != -ENODEV) - dev_err(&port->dev, "resubmit read urb failed." - "(%d)\n", err); - } - - return; -} - -static void sierra_instat_callback(struct urb *urb) -{ - int err; - int status = urb->status; - struct usb_serial_port *port = urb->context; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - - dev_dbg(&port->dev, "%s: %p\n", __func__, urb); - - if (status == 0) { - struct usb_ctrlrequest *req_pkt = - (struct usb_ctrlrequest *)urb->transfer_buffer; - - const u16 *sigp = (u16 *)(req_pkt + 1); - /* usb_ctrlrequest we parsed is followed by two bytes of data - * make sure we received that many bytes - */ - if (urb->actual_length >= sizeof(*req_pkt) + sizeof(*sigp) && - req_pkt->bRequestType == USB_REQUEST_TYPE_CLASS && - req_pkt->bRequest == USB_REQUEST_IFACE) { - int old_dcd_state; - const u16 signals = get_unaligned_le16(sigp); - struct tty_struct *tty; - - dev_dbg(&port->dev, "%s: signal 0x%x\n", __func__, - signals); - - old_dcd_state = portdata->dcd_state; - /* Note: CTS from modem is in reverse logic! */ - portdata->cts_state = ((signals & 0x100) ? 0 : 1); - portdata->dcd_state = ((signals & 0x01) ? 1 : 0); - portdata->dsr_state = ((signals & 0x02) ? 1 : 0); - portdata->ri_state = ((signals & 0x08) ? 1 : 0); - - tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty) && - old_dcd_state && !portdata->dcd_state) - tty_hangup(tty); - tty_kref_put(tty); - } else { - /* dump the data we don't understand to log */ - usb_serial_debug_data(1, &port->dev, __func__, - urb->actual_length, urb->transfer_buffer); - } - } else - dev_dbg(&port->dev, "%s: error %d\n", __func__, status); - - /* Resubmit urb so we continue receiving IRQ data */ - if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) { - usb_mark_last_busy(serial->dev); - urb->dev = serial->dev; - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err && err != -ENODEV) - dev_err(&port->dev, "%s: resubmit intr urb " - "failed. (%d)\n", __func__, err); - } -} - -static int sierra_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - unsigned long flags; - int retval; - - dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); - - /* try to give a good number back based on if we have any free urbs at - * this point in time */ - retval = MAX_TRANSFER; - - spin_lock_irqsave(&portdata->lock, flags); - if (portdata->outstanding_urbs >= portdata->num_out_urbs) { - retval = 0; - } - spin_unlock_irqrestore(&portdata->lock, flags); - - return retval; -} - -static void sierra_stop_rx_urbs(struct usb_serial_port *port) -{ - int i; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - - for (i = 0; i < portdata->num_in_urbs; i++) - usb_kill_urb(portdata->in_urbs[i]); - - usb_kill_urb(port->interrupt_in_urb); -} - -static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) -{ - int ok_cnt; - int err = -EINVAL; - int i; - struct urb *urb; - struct sierra_port_private *portdata = usb_get_serial_port_data(port); - - ok_cnt = 0; - for (i = 0; i < portdata->num_in_urbs; i++) { - urb = portdata->in_urbs[i]; - if (!urb) - continue; - urb->transfer_flags |= URB_FREE_BUFFER; - err = usb_submit_urb(urb, mem_flags); - if (err) { - dev_err(&port->dev, "%s: submit urb failed: %d\n", - __func__, err); - } else { - ok_cnt++; - } - } - - if (ok_cnt && port->interrupt_in_urb) { - err = usb_submit_urb(port->interrupt_in_urb, mem_flags); - if (err) { - dev_err(&port->dev, "%s: submit intr urb failed: %d\n", - __func__, err); - } - } - - if (ok_cnt > 0) /* at least one rx urb submitted */ - return 0; - else - return err; -} - -static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, - int dir, void *ctx, int len, - gfp_t mem_flags, - usb_complete_t callback) -{ - struct urb *urb; - u8 *buf; - - if (endpoint == -1) - return NULL; - - urb = usb_alloc_urb(0, mem_flags); - if (urb == NULL) { - dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n", - __func__, endpoint); - return NULL; - } - - buf = kmalloc(len, mem_flags); - if (buf) { - /* Fill URB using supplied data */ - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, endpoint) | dir, - buf, len, callback, ctx); - - /* debug */ - dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__, - dir == USB_DIR_IN ? 'i' : 'o', urb, buf); - } else { - dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__, - dir == USB_DIR_IN ? 'i' : 'o', urb, buf); - - sierra_release_urb(urb); - urb = NULL; - } - - return urb; -} -static void sierra_close(struct usb_serial_port *port) -{ - int i; - struct urb *urb; - struct usb_serial *serial = port->serial; - struct sierra_port_private *portdata; - struct sierra_intf_private *intfdata = port->serial->private; - - dev_dbg(&port->dev, "%s\n", __func__); - portdata = usb_get_serial_port_data(port); - - portdata->rts_state = 0; - portdata->dtr_state = 0; - - usb_autopm_get_interface(serial->interface); - - if (serial->dev) { - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - sierra_send_setup(port); - mutex_unlock(&serial->disc_mutex); - spin_lock_irq(&intfdata->susp_lock); - portdata->opened = 0; - spin_unlock_irq(&intfdata->susp_lock); - - /* Stop reading urbs */ - sierra_stop_rx_urbs(port); - /* .. and release them */ - for (i = 0; i < portdata->num_in_urbs; i++) { - sierra_release_urb(portdata->in_urbs[i]); - portdata->in_urbs[i] = NULL; - } - while((urb = usb_get_from_anchor(&portdata->delayed))) { - sierra_release_urb(urb); - usb_autopm_put_interface(serial->interface); - } - /* wait for active to finish */ - usb_wait_anchor_empty_timeout(&portdata->active, 500); - usb_kill_anchored_urbs(&portdata->active); - - } -} - -static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port) -{ - struct sierra_port_private *portdata; - struct usb_serial *serial = port->serial; - struct sierra_intf_private *intfdata = serial->private; - int i; - int err; - int endpoint; - struct urb *urb; - - portdata = usb_get_serial_port_data(port); - - dev_dbg(&port->dev, "%s\n", __func__); - - /* Set some sane defaults */ - portdata->rts_state = 1; - portdata->dtr_state = 1; - - - endpoint = port->bulk_in_endpointAddress; - for (i = 0; i < portdata->num_in_urbs; i++) { - urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, - IN_BUFLEN, GFP_KERNEL, - sierra_indat_callback); - portdata->in_urbs[i] = urb; - } - /* clear halt condition */ - usb_clear_halt(serial->dev, - usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN); - - /* reset outstanding out urbs counter */ - spin_lock_irq(&portdata->lock); - portdata->outstanding_urbs = 0; - spin_unlock_irq(&portdata->lock); - - err = sierra_submit_rx_urbs(port, GFP_KERNEL); - if (err) { - /* do everything as in close() but do not call close() because - * usbserial calls sierra_open() with mutex taken; - * then if we call sierra_close() inside sierra_open() we - * violate 'no nested mutexes' kernel condition - */ - portdata->rts_state = 0; - portdata->dtr_state = 0; - usb_autopm_get_interface(serial->interface); - /* Stop reading urbs */ - sierra_stop_rx_urbs(port); - /* .. and release them */ - for (i = 0; i < portdata->num_in_urbs; i++) { - sierra_release_urb(portdata->in_urbs[i]); - portdata->in_urbs[i] = NULL; - } - while((urb = usb_get_from_anchor(&portdata->delayed))) { - sierra_release_urb(urb); - usb_autopm_put_interface(serial->interface); - } - /* wait for active to finish */ - usb_wait_anchor_empty_timeout(&portdata->active, 500); - usb_kill_anchored_urbs(&portdata->active); - /* restore balance for autopm */ - usb_autopm_put_interface(serial->interface); - return err; - } - sierra_send_setup(port); - - spin_lock_irq(&intfdata->susp_lock); - portdata->opened = 1; - spin_unlock_irq(&intfdata->susp_lock); - usb_autopm_put_interface(serial->interface); - - return 0; -} - -static void sierra_dtr_rts(struct usb_serial_port *port, int on) -{ - struct usb_serial *serial = port->serial; - struct sierra_port_private *portdata; - - portdata = usb_get_serial_port_data(port); - portdata->rts_state = on; - portdata->dtr_state = on; - - if (serial->dev) { - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - sierra_send_setup(port); - mutex_unlock(&serial->disc_mutex); - } -} - -static int sierra_startup(struct usb_serial *serial) -{ - struct usb_serial_port *port = NULL; - struct sierra_port_private *portdata = NULL; - struct sierra_iface_info *himemoryp = NULL; - int i; - u8 ifnum; - u16 fw_attr; - int result; - - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - /* Set Device mode to D0 */ - sierra_set_power_state(serial->dev, 0x0000); - - /* Check NMEA and set */ - if (nmea) - sierra_vsc_set_nmea(serial->dev, 1); - - if (serial->num_ports) { - /* Note: One big piece of memory is allocated for all ports - * private data in one shot. This memory is split into equal - * pieces for each port. - */ - portdata = (struct sierra_port_private *)kzalloc - (sizeof(*portdata) * serial->num_ports, GFP_KERNEL); - if (!portdata) { - dev_dbg(&serial->dev->dev, "%s: No memory!\n", __func__); - return -ENOMEM; - } - } - - /* Now setup per port private data */ - for (i = 0; i < serial->num_ports; i++, portdata++) { - port = serial->port[i]; - /* Initialize selected members of private data because these - * may be referred to right away */ - spin_lock_init(&portdata->lock); - init_usb_anchor(&portdata->active); - init_usb_anchor(&portdata->delayed); - - portdata->cts_state = 1; - - ifnum = i; - /* Assume low memory requirements */ - portdata->num_out_urbs = N_OUT_URB; - portdata->num_in_urbs = N_IN_URB; - - /* Determine actual memory requirements */ - if (serial->num_ports == 1) { - /* Get interface number for composite device */ - ifnum = sierra_calc_interface(serial); - himemoryp = - (struct sierra_iface_info *)&typeB_interface_list; - if (is_himemory(ifnum, himemoryp)) { - portdata->num_out_urbs = N_OUT_URB_HM; - portdata->num_in_urbs = N_IN_URB_HM; - } - } - else { - himemoryp = - (struct sierra_iface_info *)&typeA_interface_list; - if (is_himemory(i, himemoryp)) { - portdata->num_out_urbs = N_OUT_URB_HM; - portdata->num_in_urbs = N_IN_URB_HM; - } - } - dev_dbg(&serial->dev->dev, - "Memory usage (urbs) interface #%d, in=%d, out=%d\n", - ifnum,portdata->num_in_urbs, portdata->num_out_urbs ); - /* Set the port private data pointer */ - usb_set_serial_port_data(port, portdata); - } - serial->interface->needs_remote_wakeup = 1; - - result = sierra_get_fw_attr(serial->dev, &fw_attr); - if (result == sizeof(fw_attr) && (fw_attr & SWI_FW_ATTR_PM_MASK) ) { - dev_info(&serial->dev->dev, - "APM supported, enabling autosuspend.\n"); -/******************************************************************************* - * If you want the default /sys/bus/usb/devices/.../.../power/level to be forced - * to auto, the following needs to be compiled in. - */ -#ifdef POWER_LEVEL_AUTO - /* make power level default be 'auto' */ - usb_enable_autosuspend(serial->dev); -#endif - } else { - usb_disable_autosuspend(serial->dev); - } - - return 0; -} - -static void sierra_release(struct usb_serial *serial) -{ - int i; - struct usb_serial_port *port; - struct sierra_intf_private *intfdata = serial->private; - - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - if (serial->num_ports > 0) { - port = serial->port[0]; - if (port) - /* Note: The entire piece of memory that was allocated - * in the startup routine can be released by passing - * a pointer to the beginning of the piece. - * This address corresponds to the address of the chunk - * that was given to port 0. - */ - kfree(usb_get_serial_port_data(port)); - } - - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - if (!port) - continue; - usb_set_serial_port_data(port, NULL); - } - kfree(intfdata); -} - -#ifdef CONFIG_PM -static void stop_read_write_urbs(struct usb_serial *serial) -{ - int i; - struct usb_serial_port *port; - struct sierra_port_private *portdata; - - /* Stop reading/writing urbs */ - for (i = 0; i < serial->num_ports; ++i) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - sierra_stop_rx_urbs(port); - usb_kill_anchored_urbs(&portdata->active); - } -} - -static int sierra_suspend(struct usb_serial *serial, pm_message_t message) -{ - struct sierra_intf_private *intfdata; - - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - intfdata = serial->private; - spin_lock_irq(&intfdata->susp_lock); - - if (message.event & PM_EVENT_AUTO) { - if (intfdata->in_flight) { - spin_unlock_irq(&intfdata->susp_lock); - return -EBUSY; - } - } - intfdata->suspended = 1; - spin_unlock_irq(&intfdata->susp_lock); - - stop_read_write_urbs(serial); - - return 0; -} - -static int sierra_resume(struct usb_serial *serial) -{ - struct usb_serial_port *port; - struct sierra_intf_private *intfdata = serial->private; - struct sierra_port_private *portdata; - struct urb *urb; - int ec = 0; - int i, err; - int len; - int failed_submits; - - dev_dbg(&serial->dev->dev, "%s\n", __func__); - - spin_lock_irq(&intfdata->susp_lock); - for (i = 0; i < serial->num_ports; i++) { - port = serial->port[i]; - portdata = usb_get_serial_port_data(port); - failed_submits = 0; - while ((urb = usb_get_from_anchor(&portdata->delayed))) { - usb_anchor_urb(urb, &portdata->active); - intfdata->in_flight++; - len = urb->transfer_buffer_length; - err = usb_submit_urb(urb, GFP_ATOMIC); - if (err < 0) { - intfdata->in_flight--; - usb_unanchor_urb(urb); - failed_submits++; - atomic_inc(&intfdata->stats.delayed_write_err); - /* fix pm_usage_cnt */ - usb_autopm_put_interface_async( - port->serial->interface); - } else { - atomic_inc(&intfdata->stats.delayed_writes); - atomic_add(len, &intfdata->stats.tx_bytes); - } - /* release urb - usb_get_from_anchor increased kref */ - usb_free_urb(urb); - } - - if (portdata->opened) { - err = sierra_submit_rx_urbs(port, GFP_ATOMIC); - if (err) - ec++; - } - if (failed_submits) { - /* fix outstanding_urbs counter */ - spin_lock(&portdata->lock); /* assuming irq disabled */ - portdata->outstanding_urbs -= failed_submits; - spin_unlock(&portdata->lock); - /* unblock a writer */ - usb_serial_port_softint(port); - } - } - intfdata->suspended = 0; - spin_unlock_irq(&intfdata->susp_lock); - - return ec ? -EIO : 0; -} -#else -#define sierra_suspend NULL -#define sierra_resume NULL -#endif - -static int sierra_reset_resume(struct usb_interface *intf) -{ - struct usb_serial *serial = usb_get_intfdata(intf); - dev_err(&serial->dev->dev, "%s\n", __func__); - return usb_serial_resume(intf); -} - -static struct usb_driver sierra_driver = { - .name = "sierra", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .suspend = usb_serial_suspend, - .resume = usb_serial_resume, - .reset_resume = sierra_reset_resume, - .id_table = id_table, - - .no_dynamic_id = 1, - .supports_autosuspend = 1, -}; - - -static struct usb_serial_driver sierra_device = { - .driver = { - .owner = THIS_MODULE, - .name = "sierra", - }, - .description = "Sierra USB modem", - .id_table = id_table, - .usb_driver = &sierra_driver, - .calc_num_ports = sierra_calc_num_ports, - .probe = sierra_probe, - .open = sierra_open, - .close = sierra_close, - .dtr_rts = sierra_dtr_rts, - .write = sierra_write, - .write_room = sierra_write_room, - .set_termios = sierra_set_termios, - .tiocmget = sierra_tiocmget, - .tiocmset = sierra_tiocmset, - .attach = sierra_startup, - .release = sierra_release, - .port_probe = sierra_create_sysfs_attrs, - .port_remove = sierra_remove_sysfs_attrs, - .suspend = sierra_suspend, - .resume = sierra_resume, - .read_int_callback = sierra_instat_callback, - -}; - -/* Functions used by new usb-serial code. */ -static int __init sierra_init(void) -{ - int retval; - retval = usb_serial_register(&sierra_device); - if (retval) - goto failed_device_register; - - retval = usb_register(&sierra_driver); - if (retval) - goto failed_driver_register; - - printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" - DRIVER_DESC "\n"); - - return 0; - -failed_driver_register: - usb_serial_deregister(&sierra_device); -failed_device_register: - return retval; -} - -static void __exit sierra_exit(void) -{ - usb_deregister(&sierra_driver); - usb_serial_deregister(&sierra_device); -} - -module_init(sierra_init); -module_exit(sierra_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); - -module_param(nmea, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(nmea, "NMEA streaming"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug messages"); |