Re: sata_sil24 broken since 2.6.23-rc4-mm1

From: Tejun Heo
Date: Thu Sep 27 2007 - 00:59:35 EST

Tejun Heo wrote:
> Torsten Kaiser wrote:
>> Comparing the driver/ata directory from rc3-mm1 and rc4-mm1 the
>> following change looked the most suspicions to me:
>> That after rc4-mm1 the sata_sil24.c did not change anymore also
>> matches the occurrence of the error.
>> To confirm my theorie I exchanged the sata_sil24.c from rc8-mm1 with
>> the version from rc3-mm1.
>> I was able to boot the resulting kernel successfully 5 times, without
>> the error happening again.
> Thanks a lot for chasing down the problem. The changed code is address
> initialization path and it's weird that it causes intermittent failures,
> not a consistent one.
> Anyways, does the attached patch fix the problem?

If not, can you add printk of iomap[SIL24_PORT_BAR], offset, initialized
cmd_addr and scr_addr in the loop and see whether anything is different
between when the driver works and fails.


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