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s390/irq: Only define synchronize_irq() on SMP

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commit 690cec8e70c211d1f5f6e520b21a68d0306173b6 upstream.

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>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Hutchings 2013-06-14 01:18:44 +01:00 committed by Greg Kroah-Hartman
parent eb10d6c79f
commit 7b1866f9f3
1 changed files with 2 additions and 0 deletions
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2
arch/s390/kernel/irq.c
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@ -314,6 +314,7 @@ void measurement_alert_subclass_unregister(void)
}
EXPORT_SYMBOL(measurement_alert_subclass_unregister);
#ifdef CONFIG_SMP
void synchronize_irq(unsigned int irq)
{
/*
@ -322,6 +323,7 @@ void synchronize_irq(unsigned int irq)
*/
}
EXPORT_SYMBOL_GPL(synchronize_irq);
#endif
#ifndef CONFIG_PCI