--- zzzz-none-000/linux-3.10.107/drivers/net/usb/hso.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/net/usb/hso.c 2021-02-04 17:41:59.000000000 +0000 @@ -58,7 +58,6 @@ #include #include #include -#include #include #include #include @@ -154,6 +153,7 @@ struct hso_device *parent; struct net_device *net; struct rfkill *rfkill; + char name[24]; struct usb_endpoint_descriptor *in_endp; struct usb_endpoint_descriptor *out_endp; @@ -185,7 +185,6 @@ #define BM_REQUEST_TYPE (0xa1) #define B_NOTIFICATION (0x20) #define W_VALUE (0x0) -#define W_INDEX (0x2) #define W_LENGTH (0x2) #define B_OVERRUN (0x1<<6) @@ -259,10 +258,8 @@ * so as not to drop characters on the floor. */ int curr_rx_urb_idx; - u16 curr_rx_urb_offset; u8 rx_urb_filled[MAX_RX_URBS]; struct tasklet_struct unthrottle_tasklet; - struct work_struct retry_unthrottle_workqueue; }; struct hso_device { @@ -277,7 +274,6 @@ u8 usb_gone; struct work_struct async_get_intf; struct work_struct async_put_intf; - struct work_struct reset_device; struct usb_device *usb; struct usb_interface *interface; @@ -343,7 +339,6 @@ static int hso_put_activity(struct hso_device *hso_dev); static int hso_get_activity(struct hso_device *hso_dev); static void tiocmget_intr_callback(struct urb *urb); -static void reset_device(struct work_struct *data); /*****************************************************************************/ /* Helping functions */ /*****************************************************************************/ @@ -470,6 +465,8 @@ {USB_DEVICE(0x0af0, 0x8800)}, {USB_DEVICE(0x0af0, 0x8900)}, {USB_DEVICE(0x0af0, 0x9000)}, + {USB_DEVICE(0x0af0, 0x9200)}, /* Option GTM671WFS */ + {USB_DEVICE(0x0af0, 0x9300)}, /* GTM 66xxWFS */ {USB_DEVICE(0x0af0, 0xd035)}, {USB_DEVICE(0x0af0, 0xd055)}, {USB_DEVICE(0x0af0, 0xd155)}, @@ -535,6 +532,13 @@ } static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); +static struct attribute *hso_serial_dev_attrs[] = { + &dev_attr_hsotype.attr, + NULL +}; + +ATTRIBUTE_GROUPS(hso_serial_dev); + static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) { int idx; @@ -698,7 +702,7 @@ case -ETIMEDOUT: explanation = "protocol error"; if (hso_dev) - schedule_work(&hso_dev->reset_device); + usb_queue_reset_device(hso_dev->interface); break; default: explanation = "unknown status"; @@ -911,7 +915,7 @@ /* We got no receive buffer. */ D1("could not allocate memory"); odev->rx_parse_state = WAIT_SYNC; - return; + continue; } /* Copy what we got so far. make room for iphdr @@ -1202,16 +1206,18 @@ struct hso_serial *serial = urb->context; int status = urb->status; + D4("\n--- Got serial_read_bulk callback %02x ---", status); + /* sanity check */ if (!serial) { D1("serial == NULL"); return; - } else if (status) { + } + if (status) { handle_usb_error(status, __func__, serial->parent); return; } - D4("\n--- Got serial_read_bulk callback %02x ---", status); D1("Actual length = %d\n", urb->actual_length); DUMP1(urb->transfer_buffer, urb->actual_length); @@ -1219,25 +1225,13 @@ if (serial->port.count == 0) return; - if (status == 0) { - if (serial->parent->port_spec & HSO_INFO_CRC_BUG) - fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); - /* Valid data, handle RX data */ - spin_lock(&serial->serial_lock); - serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; - put_rxbuf_data_and_resubmit_bulk_urb(serial); - spin_unlock(&serial->serial_lock); - } else if (status == -ENOENT || status == -ECONNRESET) { - /* Unlinked - check for throttled port. */ - D2("Port %d, successfully unlinked urb", serial->minor); - spin_lock(&serial->serial_lock); - serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; - hso_resubmit_rx_bulk_urb(serial, urb); - spin_unlock(&serial->serial_lock); - } else { - D2("Port %d, status = %d for read urb", serial->minor, status); - return; - } + if (serial->parent->port_spec & HSO_INFO_CRC_BUG) + fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); + /* Valid data, handle RX data */ + spin_lock(&serial->serial_lock); + serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; + put_rxbuf_data_and_resubmit_bulk_urb(serial); + spin_unlock(&serial->serial_lock); } /* @@ -1263,14 +1257,6 @@ tasklet_hi_schedule(&serial->unthrottle_tasklet); } -static void hso_unthrottle_workfunc(struct work_struct *work) -{ - struct hso_serial *serial = - container_of(work, struct hso_serial, - retry_unthrottle_workqueue); - hso_unthrottle_tasklet(serial); -} - /* open the requested serial port */ static int hso_serial_open(struct tty_struct *tty, struct file *filp) { @@ -1291,7 +1277,6 @@ goto err_out; D1("Opening %d", serial->minor); - kref_get(&serial->parent->ref); /* setup */ tty->driver_data = serial; @@ -1306,13 +1291,12 @@ tasklet_init(&serial->unthrottle_tasklet, (void (*)(unsigned long))hso_unthrottle_tasklet, (unsigned long)serial); - INIT_WORK(&serial->retry_unthrottle_workqueue, - hso_unthrottle_workfunc); result = hso_start_serial_device(serial->parent, GFP_KERNEL); if (result) { hso_stop_serial_device(serial->parent); serial->port.count--; - kref_put(&serial->parent->ref, hso_serial_ref_free); + } else { + kref_get(&serial->parent->ref); } } else { D1("Port was already open"); @@ -1356,15 +1340,12 @@ if (!usb_gone) hso_stop_serial_device(serial->parent); tasklet_kill(&serial->unthrottle_tasklet); - cancel_work_sync(&serial->retry_unthrottle_workqueue); } if (!usb_gone) usb_autopm_put_interface(serial->parent->interface); mutex_unlock(&serial->parent->mutex); - - kref_put(&serial->parent->ref, hso_serial_ref_free); } /* close the requested serial port */ @@ -1415,6 +1396,16 @@ return room; } +static void hso_serial_cleanup(struct tty_struct *tty) +{ + struct hso_serial *serial = tty->driver_data; + + if (!serial) + return; + + kref_put(&serial->parent->ref, hso_serial_ref_free); +} + /* setup the term */ static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) { @@ -1487,6 +1478,8 @@ struct uart_icount *icount; struct hso_serial_state_notification *serial_state_notification; struct usb_device *usb; + struct usb_interface *interface; + int if_num; /* Sanity checks */ if (!serial) @@ -1495,15 +1488,26 @@ handle_usb_error(status, __func__, serial->parent); return; } + + /* tiocmget is only supported on HSO_PORT_MODEM */ tiocmget = serial->tiocmget; if (!tiocmget) return; + BUG_ON((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM); + usb = serial->parent->usb; + interface = serial->parent->interface; + + if_num = interface->cur_altsetting->desc.bInterfaceNumber; + + /* wIndex should be the USB interface number of the port to which the + * notification applies, which should always be the Modem port. + */ serial_state_notification = &tiocmget->serial_state_notification; if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || serial_state_notification->bNotification != B_NOTIFICATION || le16_to_cpu(serial_state_notification->wValue) != W_VALUE || - le16_to_cpu(serial_state_notification->wIndex) != W_INDEX || + le16_to_cpu(serial_state_notification->wIndex) != if_num || le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { dev_warn(&usb->dev, "hso received invalid serial state notification\n"); @@ -1594,7 +1598,7 @@ } cprev = cnow; } - current->state = TASK_RUNNING; + __set_current_state(TASK_RUNNING); remove_wait_queue(&tiocmget->waitq, &wait); return ret; @@ -1675,6 +1679,7 @@ unsigned long flags; int if_num; struct hso_serial *serial = tty->driver_data; + struct usb_interface *interface; /* sanity check */ if (!serial) { @@ -1685,7 +1690,8 @@ if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) return -EINVAL; - if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; + interface = serial->parent->interface; + if_num = interface->cur_altsetting->desc.bInterfaceNumber; spin_lock_irqsave(&serial->serial_lock, flags); if (set & TIOCM_RTS) @@ -2014,8 +2020,7 @@ static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) { struct tty_struct *tty; - int write_length_remaining = 0; - int curr_write_len; + int count; /* Sanity check */ if (urb == NULL || serial == NULL) { @@ -2025,29 +2030,28 @@ tty = tty_port_tty_get(&serial->port); + if (tty && test_bit(TTY_THROTTLED, &tty->flags)) { + tty_kref_put(tty); + return -1; + } + /* Push data to tty */ - write_length_remaining = urb->actual_length - - serial->curr_rx_urb_offset; D1("data to push to tty"); - while (write_length_remaining) { - if (tty && test_bit(TTY_THROTTLED, &tty->flags)) { - tty_kref_put(tty); - return -1; - } - curr_write_len = tty_insert_flip_string(&serial->port, - urb->transfer_buffer + serial->curr_rx_urb_offset, - write_length_remaining); - serial->curr_rx_urb_offset += curr_write_len; - write_length_remaining -= curr_write_len; + count = tty_buffer_request_room(&serial->port, urb->actual_length); + if (count >= urb->actual_length) { + tty_insert_flip_string(&serial->port, urb->transfer_buffer, + urb->actual_length); tty_flip_buffer_push(&serial->port); + } else { + dev_warn(&serial->parent->usb->dev, + "dropping data, %d bytes lost\n", urb->actual_length); } + tty_kref_put(tty); - if (write_length_remaining == 0) { - serial->curr_rx_urb_offset = 0; - serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; - } - return write_length_remaining; + serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; + + return 0; } @@ -2213,12 +2217,11 @@ for (i = 0; i < serial->num_rx_urbs; i++) { if (serial->rx_urb[i]) { - usb_kill_urb(serial->rx_urb[i]); - serial->rx_urb_filled[i] = 0; + usb_kill_urb(serial->rx_urb[i]); + serial->rx_urb_filled[i] = 0; } } serial->curr_rx_urb_idx = 0; - serial->curr_rx_urb_offset = 0; if (serial->tx_urb) usb_kill_urb(serial->tx_urb); @@ -2244,15 +2247,15 @@ return 0; } +static void hso_serial_tty_unregister(struct hso_serial *serial) +{ + tty_unregister_device(tty_drv, serial->minor); +} + static void hso_serial_common_free(struct hso_serial *serial) { int i; - if (serial->parent->dev) - device_remove_file(serial->parent->dev, &dev_attr_hsotype); - - tty_unregister_device(tty_drv, serial->minor); - for (i = 0; i < serial->num_rx_urbs; i++) { /* unlink and free RX URB */ usb_free_urb(serial->rx_urb[i]); @@ -2262,6 +2265,7 @@ /* unlink and free TX URB */ usb_free_urb(serial->tx_urb); + kfree(serial->tx_buffer); kfree(serial->tx_data); tty_port_destroy(&serial->port); } @@ -2280,11 +2284,10 @@ goto exit; /* register our minor number */ - serial->parent->dev = tty_port_register_device(&serial->port, tty_drv, - minor, &serial->parent->interface->dev); + serial->parent->dev = tty_port_register_device_attr(&serial->port, + tty_drv, minor, &serial->parent->interface->dev, + serial->parent, hso_serial_dev_groups); dev = serial->parent->dev; - dev_set_drvdata(dev, serial->parent); - i = device_create_file(dev, &dev_attr_hsotype); /* fill in specific data for later use */ serial->minor = minor; @@ -2332,6 +2335,7 @@ return 0; exit: + hso_serial_tty_unregister(serial); hso_serial_common_free(serial); return -1; } @@ -2354,7 +2358,6 @@ INIT_WORK(&hso_dev->async_get_intf, async_get_intf); INIT_WORK(&hso_dev->async_put_intf, async_put_intf); - INIT_WORK(&hso_dev->reset_device, reset_device); return hso_dev; } @@ -2426,7 +2429,7 @@ net->type = ARPHRD_NONE; net->mtu = DEFAULT_MTU - 14; net->tx_queue_len = 10; - SET_ETHTOOL_OPS(net, &ops); + net->ethtool_ops = &ops; /* and initialize the semaphore */ spin_lock_init(&hso_net->net_lock); @@ -2475,27 +2478,21 @@ { struct hso_net *hso_net = dev2net(hso_dev); struct device *dev = &hso_net->net->dev; - char *rfkn; - - rfkn = kzalloc(20, GFP_KERNEL); - if (!rfkn) - dev_err(dev, "%s - Out of memory\n", __func__); + static u32 rfkill_counter; - snprintf(rfkn, 20, "hso-%d", - interface->altsetting->desc.bInterfaceNumber); + snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d", + rfkill_counter++); - hso_net->rfkill = rfkill_alloc(rfkn, + hso_net->rfkill = rfkill_alloc(hso_net->name, &interface_to_usbdev(interface)->dev, RFKILL_TYPE_WWAN, &hso_rfkill_ops, hso_dev); if (!hso_net->rfkill) { dev_err(dev, "%s - Out of memory\n", __func__); - kfree(rfkn); return; } if (rfkill_register(hso_net->rfkill) < 0) { rfkill_destroy(hso_net->rfkill); - kfree(rfkn); hso_net->rfkill = NULL; dev_err(dev, "%s - Failed to register rfkill\n", __func__); return; @@ -2521,7 +2518,8 @@ /* allocate our network device, then we can put in our private data */ /* call hso_net_init to do the basic initialization */ - net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); + net = alloc_netdev(sizeof(struct hso_net), "hso%d", NET_NAME_UNKNOWN, + hso_net_init); if (!net) { dev_err(&interface->dev, "Unable to create ethernet device\n"); goto exit; @@ -2609,7 +2607,6 @@ if (!serial) return; - set_serial_by_index(serial->minor, NULL); hso_serial_common_free(serial); @@ -2699,6 +2696,7 @@ return hso_dev; exit2: + hso_serial_tty_unregister(serial); hso_serial_common_free(serial); exit: hso_free_tiomget(serial); @@ -2761,8 +2759,7 @@ tty_unregister_device(tty_drv, serial->minor); kfree(serial); } - if (hso_dev) - kfree(hso_dev); + kfree(hso_dev); return NULL; } @@ -2816,13 +2813,16 @@ static int hso_get_config_data(struct usb_interface *interface) { struct usb_device *usbdev = interface_to_usbdev(interface); - u8 config_data[17]; - u32 if_num = interface->altsetting->desc.bInterfaceNumber; + u8 *config_data = kmalloc(17, GFP_KERNEL); + u32 if_num = interface->cur_altsetting->desc.bInterfaceNumber; s32 result; + if (!config_data) + return -ENOMEM; if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x86, 0xC0, 0, 0, config_data, 17, USB_CTRL_SET_TIMEOUT) != 0x11) { + kfree(config_data); return -EIO; } @@ -2873,6 +2873,7 @@ if (config_data[16] & 0x1) result |= HSO_INFO_CRC_BUG; + kfree(config_data); return result; } @@ -2886,7 +2887,12 @@ struct hso_shared_int *shared_int; struct hso_device *tmp_dev = NULL; - if_num = interface->altsetting->desc.bInterfaceNumber; + if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { + dev_err(&interface->dev, "Not our interface\n"); + return -ENODEV; + } + + if_num = interface->cur_altsetting->desc.bInterfaceNumber; /* Get the interface/port specification from either driver_info or from * the device itself */ @@ -2895,10 +2901,6 @@ else port_spec = hso_get_config_data(interface); - if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { - dev_err(&interface->dev, "Not our interface\n"); - return -ENODEV; - } /* Check if we need to switch to alt interfaces prior to port * configuration */ if (interface->num_altsetting > 1) @@ -3094,26 +3096,6 @@ return result; } -static void reset_device(struct work_struct *data) -{ - struct hso_device *hso_dev = - container_of(data, struct hso_device, reset_device); - struct usb_device *usb = hso_dev->usb; - int result; - - if (hso_dev->usb_gone) { - D1("No reset during disconnect\n"); - } else { - result = usb_lock_device_for_reset(usb, hso_dev->interface); - if (result < 0) - D1("unable to lock device for reset: %d\n", result); - else { - usb_reset_device(usb); - usb_unlock_device(usb); - } - } -} - static void hso_serial_ref_free(struct kref *ref) { struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); @@ -3123,18 +3105,22 @@ static void hso_free_interface(struct usb_interface *interface) { - struct hso_serial *hso_dev; + struct hso_serial *serial; int i; for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { if (serial_table[i] && (serial_table[i]->interface == interface)) { - hso_dev = dev2ser(serial_table[i]); - tty_port_tty_hangup(&hso_dev->port, false); - mutex_lock(&hso_dev->parent->mutex); - hso_dev->parent->usb_gone = 1; - mutex_unlock(&hso_dev->parent->mutex); + serial = dev2ser(serial_table[i]); + tty_port_tty_hangup(&serial->port, false); + mutex_lock(&serial->parent->mutex); + serial->parent->usb_gone = 1; + mutex_unlock(&serial->parent->mutex); + cancel_work_sync(&serial_table[i]->async_put_intf); + cancel_work_sync(&serial_table[i]->async_get_intf); + hso_serial_tty_unregister(serial); kref_put(&serial_table[i]->ref, hso_serial_ref_free); + set_serial_by_index(i, NULL); } } @@ -3226,6 +3212,7 @@ .close = hso_serial_close, .write = hso_serial_write, .write_room = hso_serial_write_room, + .cleanup = hso_serial_cleanup, .ioctl = hso_serial_ioctl, .set_termios = hso_serial_set_termios, .chars_in_buffer = hso_serial_chars_in_buffer,