A problem on AIX machine

Hi Champs,

If someone ever tryed hands on AIX then plz help me out.

I am facing a strange problem on an AIX machine. I am having one pci board
working fine. That machine also having one fiber channel card of IBM,
which is the cause of problem. When I upgrades the firmware & driver for
this IBM card, the OS unable to submit IOCTL to my board’s driver. If
firmware & driver for this IBM’s card downgraded then my card started
working fine again. I am unable to understand the problem.

If anyone can suggest anything then it would be of greate help for me.

Thanks in advance.

Dav