Hi Len, At Sat, 1 Apr 2006 22:16:48 -0500, Brown, Len wrote: > > > >From: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx> > > > >Currently wakeup capability is available if and only if > >CONFIG_ACPI_SLEEP=y. But S5 is not a sleep state. This patch > >makes ACPI > >subsystem to be able to wakeup from S5 state even if sleep mode is not > >supported. > > Is the goal to use wakeup devices for S5 > with a kernel that has CONFIG_ACPI_SLEEP=n? Yes. > > Why is it important not to have CONFIG_ACPI_SLEEP=y? As mentioned my patch header, currently wakeup capability is available iff sleep mode is supported (CONFIG_ACPI_SLEEP=y) and ia64 linux doesn't support sleep mode yet. Hence ia64 linux can't accomplish wake up from any system state. Refer to ACPI Kconfig file, CONFIG_ACPI_SLEEP is clearly for suspend feature. $ less drivers/acpi/Kconfig (snip) config ACPI_SLEEP bool "Sleep States" depends on X86 && (!SMP || SUSPEND_SMP) depends on PM default y ---help--- This option adds support for ACPI suspend states. (snip) But S5 is not a sleeping state (it is a soft off state) and not relevant to suspend feature, so I think wakeup from S5 should be available regardless of CONFIG_ACPI_SLEEP. > > I'm not excited about all the ifdefs. Me neither. But I didn't come up with smart alternative... Thanks, Satoru Takeuchi - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
