src/lib/libusb, branch mainFreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=main2026-02-16T08:14:05Zlibusb: dequeue next transfer on completion to prevent stalls2026-02-16T08:14:05ZBaptiste Daroussinbapt@FreeBSD.org2026-02-15T18:07:07Zurn:sha1:38c18332642500fdfe075a82f88e033f6673a53f
The transfer proxy callbacks (bulk/interrupt, control, isochronous)
only called libusb10_submit_transfer_sub() in the START path to
pipeline the second kernel transfer slot. On completion or error,
no attempt was made to dequeue the next pending transfer from
tr_head onto the now-free slot.
When more than two async transfers were submitted on the same
endpoint, the third (and subsequent) transfers would remain stuck
on tr_head indefinitely, since no completion ever triggered their
submission. This caused a protocol-level deadlock in applications
like adb that submit header + payload + zero-length terminator as
three separate bulk transfers in sequence.
Fix by calling libusb10_submit_transfer_sub() after every
libusb10_complete_transfer() in all three proxy callbacks.
MFC After: 2 weeks
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D55289
libusb: make libusb_hotplug_get_user_data actually return user_data2026-02-16T08:14:05ZBaptiste Daroussinbapt@FreeBSD.org2026-02-15T19:39:18Zurn:sha1:be522176951d8b542de9354f4ec9ac7603745b71
MFC After: 2 days
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D55291
libusb20: Add dev_open + be_device_foreach manuals2026-02-15T18:00:28ZRick Parrishunitrunker@unitrunker.net2026-02-15T17:45:21Zurn:sha1:caf23c8e0b7981dd022c52feaf6edfef232f7e27
Manual pages for libusb20_open(3) and libusb20_be_device_foreach(3).
PR: 291675
MFC after: 3 days
Reviewed by: adrian (usb), ziaee (manpages)
Differential Revision: https://reviews.freebsd.org/D54231
libusb: implement libusb_get_platform_descriptor2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-07-11T03:55:37Zurn:sha1:20056f0e5a7fe8df85a9934150d32594d6fe84da
This adds a function introduced in libusb 1.0.27 to parse
platform-specific USB descriptors, enabling access to vendor- or OS-specific information.
Approved by: lwhsu (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51242
libusb: Add missing misc class in LIBUSB_CLASS2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-05T12:28:37Zurn:sha1:315dec5ce6a2512a9c269b3e0be4622f7fc3e5ef
Reviewed by: emaste
Approved by: markj (mentor), lwhsu (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51738
libusb: implement libusb_wrap_sys_device2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-05T12:59:06Zurn:sha1:872065688515c0c4549b568f7573eb9e7deeedd7
The libusb_wrap_sys_device function can wrap an opened fd from the
system into a libusb handler. However, in FreeBSD's libusb implementation, a
USB device contains two fds: one for control transfers and another for
normal (bulk, interrupt, isochronous) transfers.
This design makes it impossible for FreeBSD to implement this function
without exposing a different structure in libusb.h to provide two fds.
Therefore, we return LIBUSB_ERROR_NOT_SUPPORTED to maintain API
compatibility.
Approved by: makrj (mentor), lwhsu (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51739
libusb: implement libusb_pollfds_handle_timeouts2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-05T15:25:31Zurn:sha1:b0d5c1cfda7696e62fa0256b5aab0e218ab98c45
This function tells applications who maintain the pollfds themselves if
they should handle the timeout for each xfer themselves. In FreeBSD, the
timeout for each xfer is handled by kernel and doesn't need a special timer to
do so. Therefore, we return 1 to indicate that it is handled by libusb
internally.
Approved by: lwhsu (mentor), markj (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51742
libusb: add libusb_supported_speed enum2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-05T16:09:48Zurn:sha1:c43a8504516643e747488011ede347b9fe2d7777
Approved by: lwhsu (mentor), markj (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51743
libusb: add libusb_usb_2_0_extension_attributes2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-05T16:17:44Zurn:sha1:8ddbb5e80099d80650b529128f1998a126f67e0a
Approved by: lwhsu (mentor), markj (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51745
libusb: add missing function signature to header2025-08-06T14:05:40ZShengYi Hungaokblast@FreeBSD.org2025-08-06T08:52:41Zurn:sha1:2525f9f84bbec545c30da3870865f426aed2f0e3
Approved by: markj (mentor), lwhsu (mentor)
Fixes: 3eda34934097 ("libusb: implement libusb_fill_bulk_stream_transfer")
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51754