Keith Owens wrote:
Keith Owens (on Fri, 21 Jul 2006 16:18:47 +1000) wrote:
I am seeing an intermittent failures to detect sata disks on
2.6.18-rc2. Dell SC1425, PIIX chipset, gcc 4.1.0 (opensuse 10.1).
Sometimes it will detect both disks, sometimes only one, sometimes none
at all. AFAICT it only occurs after a soft reboot, and possibly only
after an emergency reboot. Alas the problem is so intermittent that it
is hard to tell what conditions will trigger it.
I applied the debug patch below, turn on prink timing and set
initdefault to 6 so the machine was in a continual soft reboot cycle.
After multiple cycles I got this trace. piix_sata_prereset() reads a
zero config byte for almost 15 seconds then it changes to 0x11,
followed by a hang. Why is the config byte initially zero, and what
makes it change? The normal value for pcs is 0x33.
Can you try 2.6.18-rc2-git3?
Jeff
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