static int output_async()

in es2.c [179:215]

• 32 lines of code
• 4 McCabe index (conditional complexity)

static int output_async(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
{
	struct usb_device *udev = es2->usb_dev;
	struct urb *urb;
	struct usb_ctrlrequest *dr;
	u8 *buf;
	int retval;

	urb = usb_alloc_urb(0, GFP_ATOMIC);
	if (!urb)
		return -ENOMEM;

	dr = kmalloc(sizeof(*dr) + size, GFP_ATOMIC);
	if (!dr) {
		usb_free_urb(urb);
		return -ENOMEM;
	}

	buf = (u8 *)dr + sizeof(*dr);
	memcpy(buf, req, size);

	dr->bRequest = cmd;
	dr->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE;
	dr->wValue = 0;
	dr->wIndex = 0;
	dr->wLength = cpu_to_le16(size);

	usb_fill_control_urb(urb, udev, usb_sndctrlpipe(udev, 0),
			     (unsigned char *)dr, buf, size,
			     ap_urb_complete, dr);
	retval = usb_submit_urb(urb, GFP_ATOMIC);
	if (retval) {
		usb_free_urb(urb);
		kfree(dr);
	}
	return retval;
}