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Date:      Thu, 21 Nov 2019 06:41:07 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 242131] libusb_set_auto_detach_kernel_driver(3) causes libusb_claim_interface(3) to fail
Message-ID:  <bug-242131-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D242131

            Bug ID: 242131
           Summary: libusb_set_auto_detach_kernel_driver(3) causes
                    libusb_claim_interface(3) to fail
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: yuri@freebsd.org
 Attachment #209310 text/plain
         mime type:

Created attachment 209310
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D209310&action=
=3Dedit
usb.cpp

The attached usb.cpp fails (when the supported device is present) at
libusb_claim_interface when libusb_set_auto_detach_kernel_driver is called
before it.

Removing libusb_set_auto_detach_kernel_driver makes libusb_claim_interface =
to
succeed.

I had to patch the port misc/openhantek with the workaround for this issue =
in
order to make it to work.

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