/* am7xxx-modeswitch - a simple usb-modeswitch for am7xxx devices
*
- * Copyright (C) 2012 Antonio Ospite <ospite@studenti.unina.it>
+ * Copyright (C) 2012-2014 Antonio Ospite <ao2@ao2.it>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
*/
#include <stdio.h>
+#include <string.h>
#include <errno.h>
#include <libusb.h>
unsigned int len;
ret = libusb_init(NULL);
- if (ret < 0)
+ if (ret < 0) {
+ fprintf(stderr, "libusb_init failed: %s\n",
+ libusb_error_name(ret));
goto out;
+ }
- libusb_set_debug(NULL, 3);
+ libusb_set_debug(NULL, LIBUSB_LOG_LEVEL_INFO);
usb_device = libusb_open_device_with_vid_pid(NULL,
AM7XXX_STORAGE_VID,
AM7XXX_STORAGE_PID);
if (usb_device == NULL) {
- fprintf(stderr, "cannot open the device: %d.\n", errno);
+ fprintf(stderr, "libusb_open failed: %s\n", strerror(errno));
ret = -errno;
goto out;
}
- if (libusb_kernel_driver_active(usb_device, AM7XXX_STORAGE_INTERFACE)) {
- ret = libusb_detach_kernel_driver(usb_device,
- AM7XXX_STORAGE_INTERFACE);
- if (ret < 0)
- fprintf(stderr, "Warning: cannot detach kernel driver.\n");
- } else {
- fprintf(stderr, "kernel driver not active.\n");
- }
-
ret = libusb_set_configuration(usb_device, AM7XXX_STORAGE_CONFIGURATION);
if (ret < 0) {
- fprintf(stderr, "cannot set configuration.\n");
+ fprintf(stderr, "libusb_set_configuration failed: %s\n",
+ libusb_error_name(ret));
+ fprintf(stderr, "Cannot set configuration %hhu\n",
+ AM7XXX_STORAGE_CONFIGURATION);
goto out_libusb_close;
}
+ libusb_set_auto_detach_kernel_driver(usb_device, 1);
+
ret = libusb_claim_interface(usb_device, AM7XXX_STORAGE_INTERFACE);
if (ret < 0) {
- fprintf(stderr, "cannot claim interface.\n");
+ fprintf(stderr, "libusb_claim_interface failed: %s\n",
+ libusb_error_name(ret));
+ fprintf(stderr, "Cannot claim interface %hhu\n",
+ AM7XXX_STORAGE_INTERFACE);
goto out_libusb_close;
}