This commit fixes the following bugs in the HCD
- HCD control pipes fill incorrect transfer size
_buffer_fill_ctrl() would fill the transfer descriptors length with
wLength instead of transfer->num_bytes. Therefore, the remaining length
would be incorrect when a control transfer requests more bytes than are
available.
- Fix USB_TRANSFER_FLAG_ZERO_PACK behavior
The previous behavior of USB_TRANSFER_FLAG_ZERO_PACK was incorrect, and did not
support interrupt pipes. A zero length packet can now be added to Bulk/Interrupt
OUT transfers where the length is a multiple of the endpoint's MPS.
- Fixed HCD port suspend and resume test case
Halting a control pipe mid control transfer can lead some test devices to get stuck
5a2ef15565