[vortex] problems w/3c59x on 3CCFE575BT

[dean gaudet]

i've got a pccard which identifies itself thusly:

PRODID_1="3Com Corporation"
PRODID_2="3CCFE575BT"
PRODID_3="LAN Cardbus Card"
PRODID_4="001"
MANFID=0101,5157
FUNCID=6

if i use the in-kernel cardbus support, and the 3c59x driver, there appear
to be serious autonegotiation problems.  the card receives at an
incredibly slow rate (less than 1Mbit/s) when plugged into a 100baseT
switch.  it receives at approx 10Mbit/s when plugged into a 10baseT hub.

however, if i disable in-kernel cardbus support, and compile pcmcia-cs so
that i can get the old 3c575_cb driver, the card functions quite
respectably on the 100baseT switch (transfers at ~50Mbit/s with some
bursts much higher).

kernel 2.4.20-ac1
pcmcia-cs 3.2.3

the laptop is an older thinkpad 600e...

(mind you this has been the case ever since i first tried 2.4 on this
laptop, i just kept avoiding dealing with debugging it by leaving the box
plugged into a 10baseT hub.)

-dean