CJ, what kernel are you adding your quirk too? If it's not a kernel patched with the v4 patch set or the current pre-3.17-rc1 tree, then the IOMMU code is not yet in place to make use of the quirk.
CJ, what kernel are you adding your quirk too? If it's not a kernel patched with the v4 patch set or the current pre-3.17-rc1 tree, then the IOMMU code is not yet in place to make use of the quirk.