It might be useful to add a hint to use --buildpkg flag when emerging alsa-driver, so after a recompile one can just use emerge --usepkg, which is faster than a whole compile.
"recompile" in the text above is of cause a kernel-recompile.
*** Bug 27807 has been marked as a duplicate of this bug. ***
Created attachment 17045 [details, diff] Proposed patch
Patch looks good.
committed