Manual Pages — DEVICE_FIND_CHILD
– search for a child of a device
device_find_child(device_t dev, const char *classname, int unit)
This function looks for a specific child of
with the given
is -1, it returns the first child of
with a matching
(that is, the one with the lowest unit).
If it exists, the child device is returned, otherwise NULL.
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||February 8, 2005
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|| What is this horrible fascination with Unix? The operating system of the 1960s, still gaining in popularity in the 1990s.
— Donald A. Norman