diff options
| -rw-r--r-- | libusb/os/windows_usb.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/libusb/os/windows_usb.c b/libusb/os/windows_usb.c index 176c5db..425dc1a 100644 --- a/libusb/os/windows_usb.c +++ b/libusb/os/windows_usb.c @@ -1135,13 +1135,22 @@ enum libusb_hid_report_type { for (j=0; j<nb_paths; j++) { if ( (safe_strncmp(sanitized_path[j], sanitized_short, strlen(sanitized_short)) == 0) || (safe_strcmp(hid_path[j], sanitized_short) == 0 ) ) { - priv->usb_interface[interface_number].path = sanitized_path[j]; - priv->usb_interface[interface_number].apib = &usb_api_backend[api_type[j]]; - if ((api_type[j] == USB_API_HID) && (priv->hid == NULL)) { - priv->hid = calloc(1, sizeof(struct hid_device_priv)); + // HID devices can have multiple collections (COL##) for each MI_## interface + if (priv->usb_interface[interface_number].path != NULL) { + usbi_dbg("interface_path[%d] already set - ignoring HID collection: %s", + interface_number, sanitized_path[j]); + if (api_type[j] != USB_API_HID) { + usbi_warn(ctx, "program assertion failed - not an HID collection"); + } + } else { + priv->usb_interface[interface_number].path = sanitized_path[j]; + priv->usb_interface[interface_number].apib = &usb_api_backend[api_type[j]]; + if ((api_type[j] == USB_API_HID) && (priv->hid == NULL)) { + priv->hid = calloc(1, sizeof(struct hid_device_priv)); + } + priv->composite_api_flags |= 1<<api_type[j]; + sanitized_path[j] = NULL; } - priv->composite_api_flags |= 1<<api_type[j]; - sanitized_path[j] = NULL; } } safe_free(sanitized_short); |