2.2.25 only has one change in drivers/net/smc9194.c
08/20/00 Arnaldo Melo fix kfree(skb) in smc_hardware_send_packet

2.4.3 also has;
12/15/00 Christian Jullien fix "Warning: kfree_skb on hard IRQ"

Haven't checked any other 2.4 versions...