Im having an issue with bnx2 on my CentOS 5.6, I am able to assign initial IP address, but if I try to restart network, I get SIOCSIFFLAGS: Device or resource busy

I have disabled secondary network interface, PnP is nowhere to be found in BIOS. Any ideas on whats causing it?

Logs show:
kernel: bnx2: fw sync timeout, reset code = 1030008

I tried to unload/load bnx2 module, but it did not fix the issue:
kernel: bnx2: fw sync timeout, reset code = 1030006
kernel: bnx2: fw sync timeout, reset code = 1030009
kernel: bnx2: fw sync timeout, reset code = 103000c




# uname -r
2.6.18-238.9.1.el5

I also tried older versions of kernel without luck.

# dmesg | grep -i bnx
Broadcom NetXtreme II Gigabit Ethernet Driver bnx2 v2.0.8-rh (Oct 11, 2010)
Broadcom NetXtreme II iSCSI Driver bnx2i v2.1.3 (Aug 10, 2010)
iscsi: registered transport (bnx2i)
bnx2: eth0: using MSI
bnx2i: iSCSI not supported, dev=eth0
bnx2: eth0 NIC Copper Link is Up, 100 Mbps full duplex
bnx2i: iSCSI not supported, dev=eth0