tree 94fdc967fc9a5545ccb95430cafa061a77bb3467
parent 81f4ef77500cdbe862f5808373d375ae9ec8a853
author Harald Welte <laforge@osmocom.org> 1576450515 +0100
committer Harald Welte <laforge@osmocom.org> 1576451326 +0100

host_communication: Send zero-length-packet on wMaxPacketSize

We need to send zero-length packets on bulk endpoints whenever the
transfer size is exactly a multiple of the wMaxPacketSize.

See USB 2.0 Specification Section 5.8.3 titled "Bulk Transfer Packet
Size constraints."

Change-Id: Ice3842399d5a5c4a18383860f81074497c6e7c9b
Closes: OS#4331