Lines Matching defs:acm
3 * cdc-acm.c
41 #include "cdc-acm.h"
64 static struct acm *acm_get_by_minor(unsigned int minor)
66 struct acm *acm;
69 acm = idr_find(&acm_minors, minor);
70 if (acm) {
71 mutex_lock(&acm->mutex);
72 if (acm->disconnected) {
73 mutex_unlock(&acm->mutex);
74 acm = NULL;
76 tty_port_get(&acm->port);
77 mutex_unlock(&acm->mutex);
81 return acm;
85 * Try to find an available minor number and if found, associate it with 'acm'.
87 static int acm_alloc_minor(struct acm *acm)
92 minor = idr_alloc(&acm_minors, acm, 0, ACM_TTY_MINORS, GFP_KERNEL);
98 /* Release the minor number associated with 'acm'. */
99 static void acm_release_minor(struct acm *acm)
102 idr_remove(&acm_minors, acm->minor);
110 static int acm_ctrl_msg(struct acm *acm, int request, int value,
115 retval = usb_autopm_get_interface(acm->control);
119 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
121 acm->control->altsetting[0].desc.bInterfaceNumber,
124 dev_dbg(&acm->control->dev,
128 usb_autopm_put_interface(acm->control);
134 * the cdc acm descriptor tells whether they do...
136 static inline int acm_set_control(struct acm *acm, int control)
138 if (acm->quirks & QUIRK_CONTROL_LINE_STATE)
141 return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE,
145 #define acm_set_line(acm, line) \
146 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
147 #define acm_send_break(acm, ms) \
148 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
150 static void acm_poison_urbs(struct acm *acm)
154 usb_poison_urb(acm->ctrlurb);
156 usb_poison_urb(acm->wb[i].urb);
157 for (i = 0; i < acm->rx_buflimit; i++)
158 usb_poison_urb(acm->read_urbs[i]);
161 static void acm_unpoison_urbs(struct acm *acm)
165 for (i = 0; i < acm->rx_buflimit; i++)
166 usb_unpoison_urb(acm->read_urbs[i]);
168 usb_unpoison_urb(acm->wb[i].urb);
169 usb_unpoison_urb(acm->ctrlurb);
178 static int acm_wb_alloc(struct acm *acm)
186 wb = &acm->wb[wbn];
198 static int acm_wb_is_avail(struct acm *acm)
204 spin_lock_irqsave(&acm->write_lock, flags);
206 if(acm->wb[i].use)
208 spin_unlock_irqrestore(&acm->write_lock, flags);
213 * Finish write. Caller must hold acm->write_lock
215 static void acm_write_done(struct acm *acm, struct acm_wb *wb)
218 acm->transmitting--;
219 usb_autopm_put_interface_async(acm->control);
228 static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
232 acm->transmitting++;
237 wb->urb->dev = acm->dev;
242 dev_err(&acm->data->dev,
245 acm_write_done(acm, wb);
257 struct acm *acm = usb_get_intfdata(intf);
259 return sprintf(buf, "%d", acm->ctrl_caps);
267 struct acm *acm = usb_get_intfdata(intf);
269 memcpy(buf, acm->country_codes, acm->country_code_size);
270 return acm->country_code_size;
279 struct acm *acm = usb_get_intfdata(intf);
281 return sprintf(buf, "%d", acm->country_rel_date);
289 static void acm_process_notification(struct acm *acm, unsigned char *buf)
299 dev_dbg(&acm->control->dev,
305 dev_dbg(&acm->control->dev,
311 dev_dbg(&acm->control->dev,
314 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
315 dev_dbg(&acm->control->dev,
317 tty_port_tty_hangup(&acm->port, false);
320 difference = acm->ctrlin ^ newctrl;
321 spin_lock_irqsave(&acm->read_lock, flags);
322 acm->ctrlin = newctrl;
323 acm->oldcount = acm->iocount;
326 acm->iocount.dsr++;
328 acm->iocount.dcd++;
330 acm->iocount.brk++;
331 tty_insert_flip_char(&acm->port, 0, TTY_BREAK);
334 acm->iocount.rng++;
336 acm->iocount.frame++;
338 acm->iocount.parity++;
340 acm->iocount.overrun++;
341 spin_unlock_irqrestore(&acm->read_lock, flags);
344 tty_flip_buffer_push(&acm->port);
347 wake_up_all(&acm->wioctl);
352 dev_dbg(&acm->control->dev,
362 struct acm *acm = urb->context;
377 dev_dbg(&acm->control->dev,
382 dev_dbg(&acm->control->dev,
388 usb_mark_last_busy(acm->dev);
390 if (acm->nb_index)
391 dr = (struct usb_cdc_notification *)acm->notification_buffer;
399 if (acm->nb_size < expected_size) {
403 new_buffer = krealloc(acm->notification_buffer,
406 acm->nb_index = 0;
410 acm->notification_buffer = new_buffer;
411 acm->nb_size = alloc_size;
412 dr = (struct usb_cdc_notification *)acm->notification_buffer;
416 expected_size - acm->nb_index);
418 memcpy(&acm->notification_buffer[acm->nb_index],
420 acm->nb_index += copy_size;
421 current_size = acm->nb_index;
426 acm_process_notification(acm, (unsigned char *)dr);
427 acm->nb_index = 0;
433 dev_err(&acm->control->dev,
436 dev_vdbg(&acm->control->dev,
440 static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
444 if (!test_and_clear_bit(index, &acm->read_urbs_free))
447 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
450 dev_err(&acm->data->dev,
454 dev_vdbg(&acm->data->dev, "intended failure %d\n", res);
456 set_bit(index, &acm->read_urbs_free);
459 dev_vdbg(&acm->data->dev, "submitted urb %d\n", index);
465 static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
470 for (i = 0; i < acm->rx_buflimit; ++i) {
471 res = acm_submit_read_urb(acm, i, mem_flags);
479 static void acm_process_read_urb(struct acm *acm, struct urb *urb)
486 spin_lock_irqsave(&acm->read_lock, flags);
487 tty_insert_flip_string(&acm->port, urb->transfer_buffer,
489 spin_unlock_irqrestore(&acm->read_lock, flags);
491 tty_flip_buffer_push(&acm->port);
497 struct acm *acm = rb->instance;
503 dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n",
508 usb_mark_last_busy(acm->dev);
509 acm_process_read_urb(acm, urb);
512 set_bit(EVENT_RX_STALL, &acm->flags);
518 dev_dbg(&acm->data->dev,
525 dev_dbg(&acm->data->dev,
527 usb_mark_last_busy(acm->dev);
528 set_bit(rb->index, &acm->urbs_in_error_delay);
529 set_bit(ACM_ERROR_DELAY, &acm->flags);
533 dev_dbg(&acm->data->dev,
545 set_bit(rb->index, &acm->read_urbs_free);
555 schedule_delayed_work(&acm->dwork, 0);
557 schedule_delayed_work(&acm->dwork, HZ / 2);
561 if (test_bit(ACM_THROTTLED, &acm->flags))
564 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
571 struct acm *acm = wb->instance;
576 dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n",
581 spin_lock_irqsave(&acm->write_lock, flags);
582 acm_write_done(acm, wb);
583 spin_unlock_irqrestore(&acm->write_lock, flags);
584 set_bit(EVENT_TTY_WAKEUP, &acm->flags);
585 schedule_delayed_work(&acm->dwork, 0);
591 struct acm *acm = container_of(work, struct acm, dwork.work);
593 if (test_bit(EVENT_RX_STALL, &acm->flags)) {
595 if (!acm->susp_count) {
596 for (i = 0; i < acm->rx_buflimit; i++)
597 usb_kill_urb(acm->read_urbs[i]);
598 usb_clear_halt(acm->dev, acm->in);
599 acm_submit_read_urbs(acm, GFP_KERNEL);
600 clear_bit(EVENT_RX_STALL, &acm->flags);
604 if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) {
605 for (i = 0; i < acm->rx_buflimit; i++)
606 if (test_and_clear_bit(i, &acm->urbs_in_error_delay))
607 acm_submit_read_urb(acm, i, GFP_KERNEL);
610 if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags))
611 tty_port_tty_wakeup(&acm->port);
620 struct acm *acm;
623 acm = acm_get_by_minor(tty->index);
624 if (!acm)
633 * immediately after acm driver has been installed.
635 if (acm->quirks & DISABLE_ECHO)
638 tty->driver_data = acm;
643 tty_port_put(&acm->port);
649 struct acm *acm = tty->driver_data;
651 return tty_port_open(&acm->port, tty, filp);
656 struct acm *acm = container_of(port, struct acm, port);
666 acm->ctrlout = val;
668 res = acm_set_control(acm, val);
669 if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE))
671 dev_dbg(&acm->control->dev, "failed to set dtr/rts\n");
676 struct acm *acm = container_of(port, struct acm, port);
680 mutex_lock(&acm->mutex);
681 if (acm->disconnected)
684 retval = usb_autopm_get_interface(acm->control);
693 acm->control->needs_remote_wakeup = 1;
695 acm->ctrlurb->dev = acm->dev;
696 retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL);
698 dev_err(&acm->control->dev,
708 clear_bit(ACM_THROTTLED, &acm->flags);
710 retval = acm_submit_read_urbs(acm, GFP_KERNEL);
714 usb_autopm_put_interface(acm->control);
716 mutex_unlock(&acm->mutex);
721 for (i = 0; i < acm->rx_buflimit; i++)
722 usb_kill_urb(acm->read_urbs[i]);
723 usb_kill_urb(acm->ctrlurb);
725 usb_autopm_put_interface(acm->control);
728 mutex_unlock(&acm->mutex);
735 struct acm *acm = container_of(port, struct acm, port);
737 if (acm->minor != ACM_MINOR_INVALID)
738 acm_release_minor(acm);
739 usb_put_intf(acm->control);
740 kfree(acm->country_codes);
741 kfree(acm);
746 struct acm *acm = container_of(port, struct acm, port);
754 acm_poison_urbs(acm);
755 spin_lock_irq(&acm->write_lock);
756 spin_unlock_irq(&acm->write_lock);
758 usb_autopm_get_interface_no_resume(acm->control);
759 acm->control->needs_remote_wakeup = 0;
760 usb_autopm_put_interface(acm->control);
763 urb = usb_get_from_anchor(&acm->delayed);
768 usb_autopm_put_interface_async(acm->control);
771 acm_unpoison_urbs(acm);
777 struct acm *acm = tty->driver_data;
779 tty_port_put(&acm->port);
784 struct acm *acm = tty->driver_data;
786 tty_port_hangup(&acm->port);
791 struct acm *acm = tty->driver_data;
793 tty_port_close(&acm->port, tty, filp);
799 struct acm *acm = tty->driver_data;
808 dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count);
810 spin_lock_irqsave(&acm->write_lock, flags);
811 wbn = acm_wb_alloc(acm);
813 spin_unlock_irqrestore(&acm->write_lock, flags);
816 wb = &acm->wb[wbn];
818 if (!acm->dev) {
820 spin_unlock_irqrestore(&acm->write_lock, flags);
824 count = (count > acm->writesize) ? acm->writesize : count;
825 dev_vdbg(&acm->data->dev, "writing %d bytes\n", count);
829 stat = usb_autopm_get_interface_async(acm->control);
832 spin_unlock_irqrestore(&acm->write_lock, flags);
836 if (acm->susp_count) {
837 usb_anchor_urb(wb->urb, &acm->delayed);
838 spin_unlock_irqrestore(&acm->write_lock, flags);
842 stat = acm_start_wb(acm, wb);
843 spin_unlock_irqrestore(&acm->write_lock, flags);
852 struct acm *acm = tty->driver_data;
857 return acm_wb_is_avail(acm) ? acm->writesize : 0;
862 struct acm *acm = tty->driver_data;
867 if (acm->disconnected)
872 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
877 struct acm *acm = tty->driver_data;
879 set_bit(ACM_THROTTLED, &acm->flags);
884 struct acm *acm = tty->driver_data;
886 clear_bit(ACM_THROTTLED, &acm->flags);
891 acm_submit_read_urbs(acm, GFP_KERNEL);
896 struct acm *acm = tty->driver_data;
899 if (!(acm->ctrl_caps & USB_CDC_CAP_BRK))
902 retval = acm_send_break(acm, state ? 0xffff : 0);
904 dev_dbg(&acm->control->dev,
911 struct acm *acm = tty->driver_data;
913 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
914 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
915 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
916 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
917 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
924 struct acm *acm = tty->driver_data;
927 newctrl = acm->ctrlout;
935 if (acm->ctrlout == newctrl)
937 return acm_set_control(acm, acm->ctrlout = newctrl);
942 struct acm *acm = tty->driver_data;
944 ss->line = acm->minor;
945 ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10;
946 ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
948 jiffies_to_msecs(acm->port.closing_wait) / 10;
954 struct acm *acm = tty->driver_data;
963 mutex_lock(&acm->port.mutex);
966 if ((close_delay != acm->port.close_delay) ||
967 (closing_wait != acm->port.closing_wait))
970 acm->port.close_delay = close_delay;
971 acm->port.closing_wait = closing_wait;
974 mutex_unlock(&acm->port.mutex);
978 static int wait_serial_change(struct acm *acm, unsigned long arg)
985 spin_lock_irq(&acm->read_lock);
986 old = acm->oldcount;
987 new = acm->iocount;
988 acm->oldcount = new;
989 spin_unlock_irq(&acm->read_lock);
1001 add_wait_queue(&acm->wioctl, &wait);
1004 remove_wait_queue(&acm->wioctl, &wait);
1005 if (acm->disconnected) {
1024 struct acm *acm = tty->driver_data;
1026 icount->dsr = acm->iocount.dsr;
1027 icount->rng = acm->iocount.rng;
1028 icount->dcd = acm->iocount.dcd;
1029 icount->frame = acm->iocount.frame;
1030 icount->overrun = acm->iocount.overrun;
1031 icount->parity = acm->iocount.parity;
1032 icount->brk = acm->iocount.brk;
1040 struct acm *acm = tty->driver_data;
1045 rv = usb_autopm_get_interface(acm->control);
1050 rv = wait_serial_change(acm, arg);
1051 usb_autopm_put_interface(acm->control);
1061 struct acm *acm = tty->driver_data;
1064 int newctrl = acm->ctrlout;
1087 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
1090 newline.dwDTERate = acm->line.dwDTERate;
1096 if (newctrl != acm->ctrlout)
1097 acm_set_control(acm, acm->ctrlout = newctrl);
1099 if (memcmp(&acm->line, &newline, sizeof newline)) {
1100 memcpy(&acm->line, &newline, sizeof newline);
1101 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
1106 acm_set_line(acm, &acm->line);
1122 static void acm_write_buffers_free(struct acm *acm)
1127 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
1128 usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah);
1131 static void acm_read_buffers_free(struct acm *acm)
1135 for (i = 0; i < acm->rx_buflimit; i++)
1136 usb_free_coherent(acm->dev, acm->readsize,
1137 acm->read_buffers[i].base, acm->read_buffers[i].dma);
1141 static int acm_write_buffers_alloc(struct acm *acm)
1146 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
1147 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
1153 usb_free_coherent(acm->dev, acm->writesize,
1176 struct acm *acm;
1340 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1341 if (acm == NULL)
1344 tty_port_init(&acm->port);
1345 acm->port.ops = &acm_port_ops;
1350 acm->combined_interfaces = combined_interfaces;
1351 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
1352 acm->control = control_interface;
1353 acm->data = data_interface;
1355 usb_get_intf(acm->control); /* undone in destruct() */
1357 minor = acm_alloc_minor(acm);
1359 acm->minor = ACM_MINOR_INVALID;
1363 acm->minor = minor;
1364 acm->dev = usb_dev;
1366 acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities;
1368 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1369 acm->ctrlsize = ctrlsize;
1370 acm->readsize = readsize;
1371 acm->rx_buflimit = num_rx_buf;
1372 INIT_DELAYED_WORK(&acm->dwork, acm_softint);
1373 init_waitqueue_head(&acm->wioctl);
1374 spin_lock_init(&acm->write_lock);
1375 spin_lock_init(&acm->read_lock);
1376 mutex_init(&acm->mutex);
1378 acm->bInterval = epread->bInterval;
1379 acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress);
1381 acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
1384 acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress);
1386 acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress);
1387 init_usb_anchor(&acm->delayed);
1388 acm->quirks = quirks;
1390 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1393 acm->ctrl_buffer = buf;
1395 if (acm_write_buffers_alloc(acm) < 0)
1398 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1399 if (!acm->ctrlurb)
1403 struct acm_rb *rb = &(acm->read_buffers[i]);
1406 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1411 rb->instance = acm;
1420 usb_fill_int_urb(urb, acm->dev, acm->in, rb->base,
1421 acm->readsize,
1423 acm->bInterval);
1425 usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base,
1426 acm->readsize,
1429 acm->read_urbs[i] = urb;
1430 __set_bit(i, &acm->read_urbs_free);
1433 struct acm_wb *snd = &(acm->wb[i]);
1440 usb_fill_int_urb(snd->urb, usb_dev, acm->out,
1441 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1443 usb_fill_bulk_urb(snd->urb, usb_dev, acm->out,
1444 NULL, acm->writesize, acm_write_bulk, snd);
1448 snd->instance = acm;
1451 usb_set_intfdata(intf, acm);
1461 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1462 if (!acm->country_codes)
1464 acm->country_code_size = cfd->bLength - 4;
1465 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1467 acm->country_rel_date = cfd->iCountryCodeRelDate;
1471 kfree(acm->country_codes);
1472 acm->country_codes = NULL;
1473 acm->country_code_size = 0;
1481 kfree(acm->country_codes);
1482 acm->country_codes = NULL;
1483 acm->country_code_size = 0;
1489 usb_fill_int_urb(acm->ctrlurb, usb_dev,
1491 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1494 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1495 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1496 acm->notification_buffer = NULL;
1497 acm->nb_index = 0;
1498 acm->nb_size = 0;
1502 acm->line.dwDTERate = cpu_to_le32(9600);
1503 acm->line.bDataBits = 8;
1504 acm_set_line(acm, &acm->line);
1506 usb_driver_claim_interface(&acm_driver, data_interface, acm);
1507 usb_set_intfdata(data_interface, acm);
1509 tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
1517 usb_clear_halt(usb_dev, acm->in);
1518 usb_clear_halt(usb_dev, acm->out);
1523 if (!acm->combined_interfaces) {
1528 if (acm->country_codes) {
1529 device_remove_file(&acm->control->dev,
1531 device_remove_file(&acm->control->dev,
1534 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1538 usb_free_urb(acm->wb[i].urb);
1541 usb_free_urb(acm->read_urbs[i]);
1542 acm_read_buffers_free(acm);
1543 usb_free_urb(acm->ctrlurb);
1545 acm_write_buffers_free(acm);
1547 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1549 tty_port_put(&acm->port);
1556 struct acm *acm = usb_get_intfdata(intf);
1561 if (!acm)
1564 acm->disconnected = true;
1570 acm_poison_urbs(acm);
1571 mutex_lock(&acm->mutex);
1572 if (acm->country_codes) {
1573 device_remove_file(&acm->control->dev,
1575 device_remove_file(&acm->control->dev,
1578 wake_up_all(&acm->wioctl);
1579 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
1580 usb_set_intfdata(acm->control, NULL);
1581 usb_set_intfdata(acm->data, NULL);
1582 mutex_unlock(&acm->mutex);
1584 tty = tty_port_tty_get(&acm->port);
1590 cancel_delayed_work_sync(&acm->dwork);
1592 tty_unregister_device(acm_tty_driver, acm->minor);
1594 usb_free_urb(acm->ctrlurb);
1596 usb_free_urb(acm->wb[i].urb);
1597 for (i = 0; i < acm->rx_buflimit; i++)
1598 usb_free_urb(acm->read_urbs[i]);
1599 acm_write_buffers_free(acm);
1600 usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1601 acm_read_buffers_free(acm);
1603 kfree(acm->notification_buffer);
1605 if (!acm->combined_interfaces)
1606 usb_driver_release_interface(&acm_driver, intf == acm->control ?
1607 acm->data : acm->control);
1609 tty_port_put(&acm->port);
1615 struct acm *acm = usb_get_intfdata(intf);
1618 spin_lock_irq(&acm->write_lock);
1620 if (acm->transmitting) {
1621 spin_unlock_irq(&acm->write_lock);
1625 cnt = acm->susp_count++;
1626 spin_unlock_irq(&acm->write_lock);
1631 acm_poison_urbs(acm);
1632 cancel_delayed_work_sync(&acm->dwork);
1633 acm->urbs_in_error_delay = 0;
1640 struct acm *acm = usb_get_intfdata(intf);
1644 spin_lock_irq(&acm->write_lock);
1646 if (--acm->susp_count)
1649 acm_unpoison_urbs(acm);
1651 if (tty_port_initialized(&acm->port)) {
1652 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
1655 urb = usb_get_from_anchor(&acm->delayed);
1659 acm_start_wb(acm, urb->context);
1669 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
1672 spin_unlock_irq(&acm->write_lock);
1679 struct acm *acm = usb_get_intfdata(intf);
1681 if (tty_port_initialized(&acm->port))
1682 tty_port_tty_hangup(&acm->port, false);
1691 struct acm *acm = usb_get_intfdata(intf);
1693 clear_bit(EVENT_RX_STALL, &acm->flags);
1694 acm->nb_index = 0; /* pending control transfers are lost */
2052 acm_tty_driver->driver_name = "acm",