sys-apps/module-init-tools-3.2.2-r3 deprecated modules-update, causing a warning every time you emerge this ebuild. Patch attached. Also calls update-modules on if ${ROOT} = /, the utility isn't $ROOT-aware. ;)
Created attachment 116390 [details, diff] ipw3945d-1.7.22-r4.ebuild.diff
Thanks Jakub, fixed in CVS.