[cups-devel] [UNKN] STR #4525: unbreak USB printing on OpenBSD

[Antoine Jacoutot]

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[STR New]

Hi.

On OpenBSD, the libusb_kernel_* functions return LIBUSB_ERROR_NOT_SUPPORTED
because there is no implementation for it (also "usblp" is a Linux thing).

The following patch adds a check to open_device() that catches
LIBUSB_ERROR_NOT_SUPPORTED and continues with a warning assuming that the
kernel hasn't attached the device so that libusb is used.
This allows my USB printers to work on at least OpenBSD.

Link: https://www.cups.org/str.php?L4525
Version: 2.0.1
Attachment: https://www.cups.org/strfiles.php/3413/backend_usb-libusb_c.patch
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