diff options
Diffstat (limited to 'extras/usb_id/usb_id.c')
| -rw-r--r-- | extras/usb_id/usb_id.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/extras/usb_id/usb_id.c b/extras/usb_id/usb_id.c index 489f97e537..92c5f479c3 100644 --- a/extras/usb_id/usb_id.c +++ b/extras/usb_id/usb_id.c @@ -186,7 +186,7 @@ static int dev_if_packed_info(struct udev_device *dev, char *ifs_str, size_t len u_int8_t bInterfaceProtocol; u_int8_t iInterface; } __attribute__((packed)); - int err; + int err = 0; if (asprintf(&filename, "%s/descriptors", udev_device_get_syspath(dev)) < 0) { err = -1; @@ -233,7 +233,7 @@ static int dev_if_packed_info(struct udev_device *dev, char *ifs_str, size_t len } out: free(filename); - return 0; + return err; } /* @@ -257,14 +257,21 @@ out: static int usb_id(struct udev_device *dev) { struct udev *udev = udev_device_get_udev(dev); - struct udev_device *dev_interface; - struct udev_device *dev_usb; + struct udev_device *dev_interface = NULL; + struct udev_device *dev_usb = NULL; const char *if_class, *if_subclass; int if_class_num; int protocol = 0; dbg(udev, "syspath %s\n", udev_device_get_syspath(dev)); + /* shortcut if we are called for a usb_device */ + if (strcmp(udev_device_get_devtype(dev), "usb_device") == 0) { + dev_if_packed_info(dev, packed_if_str, sizeof(packed_if_str)); + dev_usb = dev; + goto fallback; + } + /* usb interface directory */ dev_interface = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface"); if (dev_interface == NULL) { @@ -526,7 +533,8 @@ int main(int argc, char **argv) printf("ID_SERIAL=%s\n", serial); if (serial_str[0] != '\0') printf("ID_SERIAL_SHORT=%s\n", serial_str); - printf("ID_TYPE=%s\n", type_str); + if (type_str[0] != '\0') + printf("ID_TYPE=%s\n", type_str); if (instance_str[0] != '\0') printf("ID_INSTANCE=%s\n", instance_str); printf("ID_BUS=usb\n"); |