Comment 3 for bug 1737752

Attaching an update to fix issues with 4.15, along with a fix for an issue that was missed when updating for 4.14. Note that the following kernel patch from the Ubuntu unstable tree is also needed in order to build with 4.15:

commit 5c07f2a3183e7fae55a990525fc6f407512fb23d
Author: Seth Forshee <email address hidden>
Date: Thu Dec 14 12:59:29 2017 -0600

    UBUNTU: SAUCE: dma-mapping: Change dma_check_mask to an exported function