Silicon Image contributed a patch which should help some of the 
situations that users were seeing.  If you are having problems with 
sata_sil, please do try out this patch.

I'm concerned that the sata_sil blacklist has been growing beyond the 
older Seagate drives which definitely had buggy firmware; concerned that 
the Mod15Write fix was simply "fixing" the problem addressed by this 
patch, simply by hiding the problem behind slow performance.  [note: the 
only way to really know for sure is with ATA bus traces]

On platforms where the SiI BIOS isn't executed (non-x86), this patch is 
probably more critical.  On x86, it is purported to only be needed on a 
single motherboard.

Test results (to linux-ide@vger.kernel.org) would be appreciated, 
particularly from users with newer Seagate drives.

Finally, there are also a few reports of problems of "screaming 
interrupts" on configurations with SiI 311x + Seagate NCQ drives.  This 
is a separate problem, and I haven't looked into it yet.

	Jeff