From: Bjorn Helgaas Date: Thu, 21 May 2009 23:28:53 +0000 (-0600) Subject: ACPI: don't check power state after _ON/_OFF X-Git-Tag: v2.6.31-rc1~12^2~9^15~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bdf43bbf2e19952d82995a50e00cb4b66afa4f0c;p=pandora-kernel.git ACPI: don't check power state after _ON/_OFF We used to evaluate _STA to check the power state of a device after running _ON or _OFF. But as far as I can tell, there's no benefit to evaluating _STA, and sometimes we trip over bugs when BIOSes don't implement _STA correctly. Yakui says Windows XP doesn't evaluate _STA during power transition. So let's skip it in Linux, too. It's conceivable that we'll need to check _STA in the future for some reason, but until we do, I don't see a reason to clutter this code path. References: http://bugzilla.kernel.org/show_bug.cgi?id=13243 http://marc.info/?l=linux-acpi&m=124166053803753&w=2 http://marc.info/?l=linux-acpi&m=124175761408256&w=2 http://marc.info/?l=linux-acpi&m=124210593114061&w=2 Signed-off-by: Bjorn Helgaas Acked-by: Matthew Garrett Signed-off-by: Len Brown --- Reading git-diff-tree failed