The original patch I found at http://article.gmane.org/gmane.linux.acpi.devel/14811 It works well on my 2.6.13-suspend2-r4 kernel Reproducible: Always Steps to Reproduce: 1. 2. 3.
Created attachment 69349 [details, diff] acpi_samsung-P30.patch
Please, take this patch upstream, that way it will be automatically included in Gentoo.