Comment 15 for bug 1270844

Maarten - I am not sure what problem you are attempting to address. It appears that your SATA control is being detected by AHCI at 6 Gps:

[ 2.165417] ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300)

Furthermore, the patch mentioned in the bug description was merged with 3.0:

git describe --contains 8214028344b4a38aabf73d95347e1e35538c75f6
v3.0-rc1~383^2~46