tree b8c594b3a94468aee4c8a441a0e62eaaed3229e2
parent 6b29aeb9ca22ed5ea9768020895698bd452c2a85
author Keith Ahluwalia <kahluwalia999@gmail.com> 1647859915 +0000
committer Tormod Volden <debian.tormod@gmail.com> 1647900008 +0100

windows: Fix WinUSB isochronous transfer regression

Put back missing CHECK_WINUSBX_AVAILABLE macro.

The subapi is generally set in the backend functions themselves, using
the macro CHECK_WINUSBX_AVAILABLE. However, this macro was (likely
inadvertently) removed from winusbx_copy_transfer_data() in commit
9c28ad2 causing the subapi in this function to always be SUB_API_NOTSET.
This results in the error:

  libusb: debug [winusbx_copy_transfer_data] unsupported API call for 'copy_transfer_data' (unrecognized device driver)

https://github.com/libusb/libusb/issues/747#issuecomment-649619615
References #749
Closes #1095