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s390/irq: Only define synchronize_irq() on SMP

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In uniprocessor configurations, synchronize_irq() is defined in
<linux/hardirq.h> as a macro, and this function definition fails to
compile.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org # 3.9
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Ben Hutchings
2013-06-14 01:18:44 +01:00
committed by Martin Schwidefsky
parent 17858ca65e
commit 690cec8e70
1 changed files with 2 additions and 0 deletions
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2
arch/s390/kernel/irq.c
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@@ -312,6 +312,7 @@ void measurement_alert_subclass_unregister(void)
} }
EXPORT_SYMBOL(measurement_alert_subclass_unregister); EXPORT_SYMBOL(measurement_alert_subclass_unregister);
#ifdef CONFIG_SMP
void synchronize_irq(unsigned int irq) void synchronize_irq(unsigned int irq)
{ {
/* /*
@@ -320,6 +321,7 @@ void synchronize_irq(unsigned int irq)
*/ */
} }
EXPORT_SYMBOL_GPL(synchronize_irq); EXPORT_SYMBOL_GPL(synchronize_irq);
#endif
#ifndef CONFIG_PCI #ifndef CONFIG_PCI