Re: [RFC] libertas: convert libertas driver to use an event/cmdresp queue

[Dan Williams <dcbw@redhat.com>]

On Tue, 2008-04-01 at 14:39 +0200, Holger Schurig wrote:
> > It's been tested lightly on USB, SDIO, and CF.  I'd like wider
> > testing on CF as this patch causes SSH transfers to stall
> > (only on CF!)
> 
> I've modified if_cs.c somewhat and did
> 
> $ scp inkscape inkview emacs-snapshot-x mtn \
>   emacs-snapshot-nox pgadmin3 quanta gs-gpl \
>   root@10.2.1.4:/tmp
> inkscape           100% 5856KB 650.7KB/s   00:09
> inkview            100% 5853KB 585.3KB/s   00:10
> emacs-snapshot-x   100% 5333KB 666.6KB/s   00:08
> mtn                100% 5263KB 657.9KB/s   00:08
> emacs-snapshot-nox 100% 4913KB 614.1KB/s   00:08
> pgadmin3           100% 3925KB 654.2KB/s   00:06
> quanta             100% 3597KB 719.5KB/s   00:05
> gs-gpl             100% 3597KB 599.4KB/s   00:06
> 
> I didn't notice any stall so far.  What test did you make?

Just tried a 300MB scp; got up to 37MB @ 715KB/s and then stalled.  I
think my card is somehow "special" or the controller sucks (Ricoh
RL5c476 II) or something.  I'll try to find another machine with a CF
slot.  No amount of ifconfig or iwconfig magic will help it, the card
accepts a TX packet with if_cs_send_data() and then apparently never
sends an interrupt to say the TX is done.  The driver then does the RSSI
thing to poke the firmware, which of course times out, and then all is
lost.

Maybe I have dodgy firmware?  Can you point me to some known working
stuff?

Dan