The patch below does not apply to the 3.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 690cec8e70c211d1f5f6e520b21a68d0306173b6 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Date: Fri, 14 Jun 2013 01:18:44 +0100
Subject: [PATCH] s390/irq: Only define synchronize_irq() on SMP
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@xxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 3.9
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 408e866..dd3c199 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -312,6 +312,7 @@ void measurement_alert_subclass_unregister(void)
}
EXPORT_SYMBOL(measurement_alert_subclass_unregister);
+#ifdef CONFIG_SMP
void synchronize_irq(unsigned int irq)
{
/*
@@ -320,6 +321,7 @@ void synchronize_irq(unsigned int irq)
*/
}
EXPORT_SYMBOL_GPL(synchronize_irq);
+#endif
#ifndef CONFIG_PCI
--
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