113 	struct auerswald *cp = NULL;  in auerchar_open()  local
125 	cp = auerdev_table[dtindex];  in auerchar_open()
126 	if (cp == NULL) {  in auerchar_open()
130 	if (down_interruptible(&cp->mutex)) {  in auerchar_open()
156 			  cp->maxControlLength + AUH_SIZE);  in auerchar_open()
161 	cp->open_count++;  in auerchar_open()
162 	ccp->auerdev = cp;  in auerchar_open()
163 	dbg("open %s as /dev/usb/%s", cp->dev_desc, cp->name);  in auerchar_open()
164 	up(&cp->mutex);  in auerchar_open()
172       ofail:up(&cp->mutex);  in auerchar_open()
185 	struct auerswald *cp = NULL;  in auerchar_ioctl()  local
193 	cp = ccp->auerdev;  in auerchar_ioctl()
194 	if (!cp) {  in auerchar_ioctl()
198 	if (down_interruptible(&cp->mutex)) {  in auerchar_ioctl()
204 	if (!cp->usbdev) {  in auerchar_ioctl()
205 		up(&cp->mutex);  in auerchar_ioctl()
216 		    && !list_empty(&cp->bufctl.free_buff_list);  in auerchar_ioctl()
251 		u = cp->maxControlLength;  in auerchar_ioctl()
259 		auerswald_removeservice(cp, &ccp->scontext);  in auerchar_ioctl()
273 		ret = auerswald_addservice(cp, &ccp->scontext);  in auerchar_ioctl()
288 		u = strlen(cp->dev_desc) + 1;  in auerchar_ioctl()
292 		ret = copy_to_user(devinfo.buf, cp->dev_desc, u);  in auerchar_ioctl()
308 	up(&cp->mutex);  in auerchar_ioctl()
459 	struct auerswald *cp = NULL;  in auerchar_write()  local
485 	cp = ccp->auerdev;  in auerchar_write()
486 	if (!cp) {  in auerchar_write()
490 	if (down_interruptible(&cp->mutex)) {  in auerchar_write()
494 	if (!cp->usbdev) {  in auerchar_write()
495 		up(&cp->mutex);  in auerchar_write()
502 	add_wait_queue(&cp->bufferwait, &wait);  in auerchar_write()
507 	bp = auerbuf_getbuf(&cp->bufctl);  in auerchar_write()
510 		up(&cp->mutex);  in auerchar_write()
516 			remove_wait_queue(&cp->bufferwait, &wait);  in auerchar_write()
522 		remove_wait_queue(&cp->bufferwait, &wait);  in auerchar_write()
530 		remove_wait_queue(&cp->bufferwait, &wait);  in auerchar_write()
534 	if (len > cp->maxControlLength)  in auerchar_write()
535 		len = cp->maxControlLength;  in auerchar_write()
542 		wake_up(&cp->bufferwait);  in auerchar_write()
543 		up(&cp->mutex);  in auerchar_write()
559 	FILL_CONTROL_URB(bp->urbp, cp->usbdev,  in auerchar_write()
560 			 usb_sndctrlpipe(cp->usbdev, 0),  in auerchar_write()
564 	ret = auerchain_submit_urb(&cp->controlchain, bp->urbp);  in auerchar_write()
565 	up(&cp->mutex);  in auerchar_write()
570 		wake_up(&cp->bufferwait);  in auerchar_write()
585 	struct auerswald *cp;  in auerchar_release()  local
592 	cp = ccp->auerdev;  in auerchar_release()
593 	if (cp) {  in auerchar_release()
594 		if (down_interruptible(&cp->mutex)) {  in auerchar_release()
599 		auerswald_removeservice(cp, &ccp->scontext);  in auerchar_release()
601 		if ((--cp->open_count <= 0) && (cp->usbdev == NULL)) {  in auerchar_release()
603 			up(&cp->mutex);  in auerchar_release()
604 			auerswald_delete(cp);  in auerchar_release()
606 			up(&cp->mutex);  in auerchar_release()
608 		cp = NULL;  in auerchar_release()