Darian Leung e17e066828 usb_host: Add check to prevent submitting already inflight transfers
This commit adds a simple flag/check in the USB Host Library that prevents
users from submitting a transfer that is already inflight.

- A transfer is considered inflight as soon as it is submitted by calling
usb_host_transfer_submit() or usb_host_transfer_submit_control()
- An inflight transfer remains inflight up until right before its callback
is called by one of the USB Host Library handler functions.

Closes https://github.com/espressif/esp-idf/issues/8748
2022-10-31 13:56:59 +08:00
..
2022-01-06 15:09:39 +08:00
2021-08-24 23:28:00 +08:00