Re: [PATCH 04/50] ACPICA: Fix to allow region arguments to reference other scopes

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Hi,

Len Brown wrote[1]:

> From: Lin Ming <ming.m.lin@xxxxxxxxx>
[...]
> http://www.acpica.org/bugzilla/show_bug.cgi?id=937
> http://marc.info/?l=linux-acpi&m=131636632718222&w=2
>
> ACPI Error: [RAMB] Namespace lookup failure, AE_NOT_FOUND (20110112/psargs-359)
> ACPI Exception: AE_NOT_FOUND, Could not execute arguments for [RAMW] (Region) (20110112/nsinit-349)
>
>     Scope (_SB)
>     {
>         Name (RAMB, 0xDF5A1018)
>         OperationRegion (\RAMW, SystemMemory, RAMB, 0x00010000)
>     }
>
> For above ASL code, we need to save scope node(\_SB) to lookup
> the argument node(\_SB.RAMB).
>
> Reported-by: Jim Green <student.northwestern@xxxxxxxxx>
> Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
> Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
> Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

Arne Nordmark reports[2] that this patch, when applied to 3.2.5, fixes
a resume failure.  Thanks!

Would it be safe and useful to backport this fix to stable/longterm
kernels?  If so, which ones?

Jonathan

[1] commit 8931d9ea7884
[2] http://bugs.debian.org/661581
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