modprobe hostap_pci locks up machine

Steven Ihde x-hostap at
Mon Dec 6 19:46:33 EST 2004

Perhaps this page entitled "Using the DWL-520 rev. E1 with HostAP"
might be of some use to you:

I found it on the HostAP-related links section of the HostAP homepage.

A tantalizing tidbit from the page:

    All is not lost, however. Don't return the card or chuck it. It
    will work using the HostAP driver.


On Mon, 06 Dec 2004 18:01:26 -0500, Ian Goldberg wrote:
> A friend of mine has a DWL-520:
> 00:08.0 Network controller: Intersil Corporation Prism 2.5 Wavelan chipset (rev 01)
>         Subsystem: D-Link System Inc DWL-520 Wireless PCI Adapter, Rev E1
>         Flags: bus master, medium devsel, latency 32, IRQ 11
>         Memory at dddff000 (32-bit, prefetchable) [size=4K]
>         Capabilities: [dc] Power Management version 2
> She's trying to get it to work with hostap (though she only needs it to
> be a station, not an AP).  The machine (a Soyo barebones:
> running FC3 (kernel 2.6.9) locks up hard when she does modprobe hostap_pci.
> She's a Linux newbie, so she enlisted my help.  I put a whole lot of
> printk's in the hostap_pci.c file, and it's locking up during the call
> to HFA384X_INB(HFA384X_PCICOR_OFF) in prism2_pci_cor_sreset.
> The readb(0x2091804c) causes it to crash.
> 0x2091804c == dev->mem_start + 0x4c (HFA384X_PCICOR_OFF).
> I'm at a complete loss as to how to proceed from here.  Any help?
> [The debugging was with 0.3.0, but 0.2.0 displays the same lockup.]
> Thanks,
>    - Ian
> _______________________________________________
> HostAP mailing list
> HostAP at

Steven C. Ihde <sihde at>
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