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Add warning about loading/unloading drivers and identify

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Warner Losh 2004-03-05 22:21:18 +00:00
parent 169299398a
commit 4eebf56527
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7
share/man/man9/DEVICE_IDENTIFY.9
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@ -54,6 +54,13 @@ with the kernel by calling
for each resource (refer to
.Xr bus_set_resource 9
for more information).
.Pp
Since the device tree and the device driver tree are disjoint, the
.Nm
routine needs to take this into account.
If you load and unload your device driver that has the identify
routine, the child node has the potential for adding the same node
multiple times.
.Sh EXAMPLES
The following pseudo-code shows an example of a function that
probes for a piece of hardware and registers it and its resource