kldunload: can't unload file: Operation not supported by device

[M. Warner Losh]

In message: <4BC30514.3090301 at yandex.ru>
            "Andrey V. Elsukov" <bu7cher at yandex.ru> writes:
: On 12.04.2010 14:12, KGB wrote:
: >        kldunload: can't unload file: Operation not supported by device
: >        If I use the parameter "-f" with kldunload ,the result is identical.
: >        Can someone give me advice?
: 
: Not all modules can be unloaded. See module(9).

Or there's a program with the device open...  But the -f flag is just
a stronger hint to unload than without it.

Warner