On Mon, Aug 13, 2007 at 03:21:54PM +0200, Michal Piotrowski wrote:
> > >
> > > The patch changes the warning to a different warning, it's now
> > > kernel/power/Kconfig:79:warning: 'select' used by config symbol
> > > 'PM_SLEEP_SMP' refers to undefined symbol 'HOTPLUG_CPU'
So we have something like this for ppc:
config PM_SLEEP_SMP
bool "bla bla"
select HOTPLUG_CPU
As it is not in my -linus tree it has been added by the referanced patch
in the text I zapped.
The warning is generated _independently_ of the actual configuration.
All it says is that the symbol PM_SLEEP_SMP has a seelct statement
for an unknown symbol - unknown for this architecture at least.
Grepping will reveal that HOTPLUG_CPU is not present for ppc and
the easiet fix here seems to just add it like in the following:
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 6bdeeb7..e7bcd57 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -65,6 +65,10 @@ config GENERIC_BUG
default y
depends on BUG
+config HOTPLUG_CPU
+ bool
+ default n
+
source "init/Kconfig"
menu "Processor"
[cut'n'paste so whitespace damaged...]
This will silence the warning...
Now as PM_SLEEP_SMP requires HOTPLUG_CPU there most be done
something else to prevent this config symbol to be selected
otherwise we would end up with a kernel that has HOTPLUG_CPU
defined even it is not supported.
Sam
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