- * some more, or keeps on retransmitting the 8 byte header. */
-
- desc = (struct usb_device_descriptor *)tmpbuf;
- dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
- /* Default to 64 byte max packet size */
- dev->maxpacketsize = PACKET_SIZE_64;
- dev->epmaxpacketin[0] = 64;
- dev->epmaxpacketout[0] = 64;
-
- /*
- * XHCI needs to issue a Address device command to setup
- * proper device context structures, before it can interact
- * with the device. So a get_descriptor will fail before any
- * of that is done for XHCI unlike EHCI.
- */
-#ifndef CONFIG_USB_XHCI
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
- /*
- * Validate we've received only at least 8 bytes, not that we've
- * received the entire descriptor. The reasoning is:
- * - The code only uses fields in the first 8 bytes, so that's all we
- * need to have fetched at this stage.
- * - The smallest maxpacket size is 8 bytes. Before we know the actual
- * maxpacket the device uses, the USB controller may only accept a
- * single packet. Consequently we are only guaranteed to receive 1
- * packet (at least 8 bytes) even in a non-error case.
- *
- * At least the DWC2 controller needs to be programmed with the number
- * of packets in addition to the number of bytes. A request for 64
- * bytes of data with the maxpacket guessed as 64 (above) yields a
- * request for 1 packet.