kernel: prism2_hostapd: unknown cmd=12

Jouni Malinen jkmaline at
Thu May 20 03:11:23 EDT 2004

On Mon, May 17, 2004 at 07:53:13AM -0400, Kevin Tang wrote:

> I encountered the same message "Operation not supported" when I installed
> the lastest development version of hostapd but not the latest
> hostap-driver.  After I installed the latest driver, the message went
> away.  This might not be your problem, but it's an easy fix if it is.

> On Sat, 15 May 2004, Kwabbernoot wrote:
> > When I use my RH9 stop script for stopping hostapd is sends this 
> > "prism2_hostapd: unknown cmd=12" to syslog.

prism2_hostapd cmd=12 is PRISM2_HOSTAPD_SET_GENERIC_ELEMENT which was
added in 0.2.x branch. This error does indeed occur if the kernel driver
is from a 0.1.x release and hostapd from a 0.2.x release. This kind of
mismatch in versions is not recommended.

Jouni Malinen                                            PGP id EFC895FA

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