return udev_device->parent_device;
}
-struct udev_device *udev_device_get_parent_with_subsystem(struct udev_device *udev_device, const char *subsystem)
+struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype)
{
struct udev_device *parent;
- parent = udev_device_get_parent(udev_device);
- while (parent != NULL) {
- const char *parent_subsystem;
-
- parent_subsystem = udev_device_get_subsystem(parent);
- if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0)
- break;
- parent = udev_device_get_parent(parent);
- }
- return parent;
-}
-
-struct udev_device *udev_device_get_parent_with_devtype(struct udev_device *udev_device, const char *devtype)
-{
- struct udev_device *parent;
+ if (subsystem == NULL)
+ return NULL;
parent = udev_device_get_parent(udev_device);
while (parent != NULL) {
+ const char *parent_subsystem;
const char *parent_devtype;
- parent_devtype = udev_device_get_devtype(parent);
- if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0)
- break;
+ parent_subsystem = udev_device_get_subsystem(parent);
+ if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) {
+ if (devtype == NULL)
+ break;
+ parent_devtype = udev_device_get_devtype(parent);
+ if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0)
+ break;
+ }
parent = udev_device_get_parent(parent);
}
return parent;
return NULL;
if (!udev_device->devtype_set) {
udev_device->devtype_set = 1;
- udev_device_read_uevent_file(udev_device);
+ if (!udev_device->info_loaded)
+ udev_device_read_uevent_file(udev_device);
}
return udev_device->devtype;
}