Detach a USB device from kernel driver using libusb-1.0

gistfile1.c

#include <libusb.h>
#include <stdint.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>

static libusb_context *ctx;

static int do_init(void)
{
	if ( NULL == ctx && libusb_init(&ctx) )
		return 0;
	return 1;
}

static int do_device(libusb_device *dev)
{
	struct libusb_device_descriptor d;
	struct libusb_config_descriptor *conf;
	libusb_device_handle *handle;
	unsigned int i;

	if ( libusb_get_device_descriptor(dev, &d) )
		return 0;

	printf("%03d.%03d = %04x:%04x\n",
		libusb_get_bus_number(dev),
		libusb_get_device_address(dev),
		d.idVendor, d.idProduct);

	if ( d.idVendor != 0x19d2 ||
		d.idProduct != 0x1007 )
		return 1;

	if ( libusb_get_active_config_descriptor(dev, &conf) )
		return 0;

	if ( libusb_open(dev, &handle) )
		return 0;

	for(i = 0; i < conf->bNumInterfaces; i++) {
		if ( libusb_detach_kernel_driver(handle, i) ) {
			libusb_close(handle);
			libusb_free_config_descriptor(conf);
			return 0;
		}
		printf(" - detached interface %u\n", i);
	}

	//libusb_reset_device(handle);

	libusb_close(handle);
	libusb_free_config_descriptor(conf);
	return 1;
}

static int do_all_devices(void)
{
	libusb_device **devlist;
	ssize_t numdev, i;
	int ret = 0;

	if ( !do_init() )
		goto out;

	numdev = libusb_get_device_list(ctx, &devlist);
	if ( numdev <= 0 )
		goto out;

	for(ret = 1, i = 0; i < numdev; i++) {
		if ( !do_device(devlist[i]) )
			ret = 0;
	}

//out_free:
	libusb_free_device_list(devlist, 1);
out:
	return ret;
}

int main(int argc, char **argv)
{
	do_all_devices();
	return EXIT_SUCCESS;
}