Sigmund Scheinbar wrote:
> Tejun Heo wrote:
>> Please apply the attached patch over 2.6.20.1 and report how it works.
> 
> I'm afraid that something went wrong while patching:

Sorry, it was generated against the wrong tree.  Regenerated patch attached.

> BTW.: I'm just curious, what's the "purpose" of this patch, it looks to
> me like it is just going to ignore the problem? Or do you think that the
> hardware is faulty?

ATAPI devices use error conditions regularly to report all sorts of
things including media not present.  In some variants of ahci's, this
sets seemingly unrelated error bits - JMBs set interface error and
sb600s seem to set internal error.  These errors when interpreted
literally require device reset to recover from thus ATAPI devices never
get through device ready check.  So, the patch makes ahci driver
suppress those spurious errors.

-- 
tejun