sys/i386/i386/busdma_machdep.c 220.127.116.11 broke cardus on T30. After applying
the patch, the system freezes when a CardBus card is inserted. If the card
is in place at boot time, the system freezes when the device is probed. Only
the first line of the probe
dc0: <Xircom X3201 10/100BaseTX> port 0x4000-0x407f mem 0xd0201000-0xd02017ff,0\xd0201800-0xd0201fff irq 11 at device 0.0 on cardbus1
is printed. The system then freezes and a power cycle is required to
recover. Backing out this patch allows the card to finish the probe normally.
Install the update and boot the system with a PCMCIA card inserted.
Back out sys/i386/i386/busdma_machdep.c to 18.104.22.168.