On Fri, May 20, 2011 at 11:20:16AM +0200, Michal Suchanek wrote:

Hello

On 20 May 2011 11:15, Tejun Heo [off-list ref] wrote:

quoted

quoted

[    3.080341] ahci 0000:00:1f.2: flags: 64bit ncq sntf led clo pio ems sxs

But in this case, the above is enough.  Your controller doesn't
support port multiplier.  It doesn't have "pmp" flag set.

So the table at
https://ata.wiki.kernel.org/index.php/SATA_hardware_features listing
ICH10 as having CBS PMP support is bogus?

That tables says "ICH10R only".  Maybe some other variants too.  You
need to consult the datasheets to determine exactly which products
enable which features.  It doesn't have much to do with the driver.
It's the hardware controller marked as not supporting port multiplier
mostly thanks to intel's product differentiation.

Thanks.

-- 
tejun