usb/core/message.c

35 static void usb_api_blocking_completion(struct urb *urb)
37 	struct api_context *ctx = urb->context;
39 	ctx->status = urb->status;
45  * Starts urb and waits for completion or timeout. Note that this call
50 static int usb_start_wait_urb(struct urb *urb, int timeout, int *actual_length)
57 	urb->context = &ctx;
58 	urb->actual_length = 0;
59 	retval = usb_submit_urb(urb, GFP_NOIO);
65 		usb_kill_urb(urb);
68 		dev_dbg(&urb->dev->dev,
71 			usb_endpoint_num(&urb->ep->desc),
72 			usb_urb_dir_in(urb) ? "in" : "out",
73 			urb->actual_length,
74 			urb->transfer_buffer_length);
79 		*actual_length = urb->actual_length;
81 	usb_free_urb(urb);
92 	struct urb *urb;
96 	urb = usb_alloc_urb(0, GFP_NOIO);
97 	if (!urb)
100 	usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char *)cmd, data,
103 	retv = usb_start_wait_urb(urb, timeout, &length);
111  * usb_control_msg - Builds a control urb, sends it off and waits for completion
300  * usb_interrupt_msg - Builds an interrupt urb, sends it off and waits for completion
333  * usb_bulk_msg - Builds a bulk urb, sends it off and waits for completion
367 	struct urb *urb;
374 	urb = usb_alloc_urb(0, GFP_KERNEL);
375 	if (!urb)
381 		usb_fill_int_urb(urb, usb_dev, pipe, data, len,
385 		usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
388 	return usb_start_wait_urb(urb, timeout, actual_length);
405 static void sg_complete(struct urb *urb)
408 	struct usb_sg_request *io = urb->context;
409 	int status = urb->status;
426 			&& urb->actual_length) {
430 			usb_endpoint_num(&urb->ep->desc),
431 			usb_urb_dir_in(urb) ? "in" : "out",
459 			} else if (urb == io->urbs[i])
466 	io->bytes += urb->actual_length;
490  * I/O mappings and urb memory (except maybe memory used by USB controller
538 		struct urb *urb;
541 		urb = usb_alloc_urb(0, mem_flags);
542 		if (!urb) {
546 		io->urbs[i] = urb;
548 		urb->dev = NULL;
549 		urb->pipe = pipe;
550 		urb->interval = period;
551 		urb->transfer_flags = urb_flags;
552 		urb->complete = sg_complete;
553 		urb->context = io;
554 		urb->sg = sg;
558 			urb->transfer_buffer = NULL;
559 			urb->num_sgs = nents;
577 				urb->transfer_buffer = sg_virt(sg);
579 				urb->transfer_buffer = NULL;
589 		urb->transfer_buffer_length = len;