strange code in hub.c

Hi,

is this code still relevant? How can there be a probe() while the module
is unloading? Is this a survivor of the pre-driver core days?

	/* Lock ourself into memory in order to keep a probe sequence
	 * sleeping in a new thread from allowing us to be unloaded.
	 */
	if (!try_module_get(THIS_MODULE))
		return -EINVAL;

	Regards
		Oliver

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