Re: libata and PATA devices

[Tejun Heo <htejun@gmail.com>]

  Hello, Andreas.


Andreas Klöckner wrote:
> Hey Jeff, all,
> 
> I was wondering why ATA_ENABLE_PATA and ATA_ENABLE_ATAPI are #undef'ed in 
> include/linux/libata.h by default, since reverting them to #define's was the 
> only way to make the ata-piix driver detect my CDROM on my new shiny ThinkPad 
> (Intel Corp. 82801FBM (ICH6M) SATA Controller). I would assume that most 
> people would want this. The drive worked out of the box on Ubuntu, so I 
> assume that their vendor patch includes this anyway.
> 
> Is there a specific reason that these are disabled? Are there any bad 
> consequences that I'm not aware of? Only reading the source really revealed 
> that this was the way to get my CD-ROM to work.

  SATA ATAPI support still has some issues, but as you can read from the 
following post, libata is almost there now.

http://marc.theaimsgroup.com/?l=linux-kernel&m=112261379120567&w=2

  I don't know much about PATA support.  All I know is that ICH's seem 
to generate a lot of noise in this mailing list w/ its legacy, combined, 
ahci and whatever modes and no one setting seems to satisfy all.  (If 
anyone knows more about it, please fill in here.)

-- 
tejun