Feedback for portable libusb code

[Hans Petter Selasky]

On 02/05/18 16:35, Romain Tartière wrote:
> Hi!
> 
> On Mon, Jan 29, 2018 at 08:10:06PM +0100, Hans Petter Selasky wrote:
>> Does the attached patch for FreeBSD's libusb solve your issue?
> 
> I have just patched, build and installed libusb.  I removed the
> libusb_open() / libusb_close() calls from usb_get_port_path() in
> libsigrok and tested.
> https://github.com/sigrokproject/libsigrok/blob/a9010323ddf4e479663e871386c05db05ea3522e/src/usb.c#L473-L491
> 
> 
> Unfortunately, the problem is still present.  On the first enumeration,
> libusb_get_port_numbers() returns 3 and the firmware is send to the
> device successfully.  Then, when lbsigrok attempt to re-enumerate
> devices, libusb_get_port_numbers() returns -12
> (LIBUSB_ERROR_NOT_SUPPORTED).
> 
> 
> 
> I am sure that the firmware is sent successfully because usbconfig(8)
> shows the following when I plug the device:
> | ugen0.10: <vendor 0x04b4 product 0x8613> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (100mA)
> and after the enumeration failure, I can see this instead:
> | ugen0.10: <sigrok fx2lafw> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (100mA)
> 

Can you run "ldd" on your binaries to see they really are using the 
libusb you installed?

--HPS