diff options
| -rw-r--r-- | host/libusb_util.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/host/libusb_util.c b/host/libusb_util.c index 8565372..cb435e2 100644 --- a/host/libusb_util.c +++ b/host/libusb_util.c @@ -250,34 +250,39 @@ libusb_device_handle *usb_open_claim_interface(libusb_context *ctx, (strlen(ifm->path) && !strcmp(path, ifm->path))) { rc = libusb_open(*dev, &usb_devh); if (rc < 0) { - perror("Cannot open device"); + fprintf(stderr, "Cannot open device: %s\n", libusb_error_name(rc)); + usb_devh = NULL; break; } rc = libusb_get_configuration(usb_devh, &config); if (rc < 0) { - perror("Cannot get current configuration"); + fprintf(stderr, "Cannot get current configuration: %s\n", libusb_error_name(rc)); libusb_close(usb_devh); + usb_devh = NULL; break; } if (config != ifm->configuration) { rc = libusb_set_configuration(usb_devh, ifm->configuration); if (rc < 0) { - perror("Cannot set configuration"); + fprintf(stderr, "Cannot set configuration: %s\n", libusb_error_name(rc)); libusb_close(usb_devh); + usb_devh = NULL; break; } } rc = libusb_claim_interface(usb_devh, ifm->interface); if (rc < 0) { - perror("Cannot claim interface"); + fprintf(stderr, "Cannot claim interface: %s\n", libusb_error_name(rc)); libusb_close(usb_devh); + usb_devh = NULL; break; } rc = libusb_set_interface_alt_setting(usb_devh, ifm->interface, ifm->altsetting); if (rc < 0) { - perror("Cannot set interface altsetting"); + fprintf(stderr, "Cannot set interface altsetting: %s\n", libusb_error_name(rc)); libusb_release_interface(usb_devh, ifm->interface); libusb_close(usb_devh); + usb_devh = NULL; break; } } |