[PATCH 5/6] x86: ifdef ioapic related function out

From: Henrik Kretzschmar
Date: Mon Feb 14 2011 - 05:01:01 EST


arch_disable_smp_config() is an IO-APIC related function on x86,
and should only be needed if SMP is enabled.
But the IO-APIC code calls it when the parameter "noapic" is given to
the kernel, which doesn't mean SMP is enabled.

Anyway this fixes compilation on x86_32 UP systems with APIC and no IO-APIC.

Signed-off-by: Henrik Kretzschmar <henne@xxxxxxxxxxxxxxxx>
---
arch/x86/kernel/apic/apic.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 999c531..4998f0a 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1218,7 +1218,9 @@ void __cpuinit setup_local_APIC(void)
rdtscll(tsc);

if (disable_apic) {
+#ifdef CONFIG_X86_IO_APIC
arch_disable_smp_support();
+#endif
return;
}

--
1.7.2.3

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