[tip: irq/core] arm: Move ipi_teardown() to a CONFIG_HOTPLUG_CPU section

[tip-bot2 for Marc Zyngier]

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     ac15a54e03d13686d2fc016a88311801b0734046
Gitweb:        https://git.kernel.org/tip/ac15a54e03d13686d2fc016a88311801b0734046
Author:        Marc Zyngier <maz@xxxxxxxxxx>
AuthorDate:    Fri, 18 Sep 2020 17:19:46 +01:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Fri, 18 Sep 2020 17:40:48 +01:00

arm: Move ipi_teardown() to a CONFIG_HOTPLUG_CPU section

ipi_teardown() is only used when CONFIG_HOTPLUG_CPU is enabled.
Move the function to a location guarded by this config option.

Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
 arch/arm/kernel/smp.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 00327fa..8425da5 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -85,7 +85,6 @@ static int nr_ipi __read_mostly = NR_IPI;
 static struct irq_desc *ipi_desc[MAX_IPI] __read_mostly;
 
 static void ipi_setup(int cpu);
-static void ipi_teardown(int cpu);
 
 static DECLARE_COMPLETION(cpu_running);
 
@@ -236,6 +235,17 @@ int platform_can_hotplug_cpu(unsigned int cpu)
 	return cpu != 0;
 }
 
+static void ipi_teardown(int cpu)
+{
+	int i;
+
+	if (WARN_ON_ONCE(!ipi_irq_base))
+		return;
+
+	for (i = 0; i < nr_ipi; i++)
+		disable_percpu_irq(ipi_irq_base + i);
+}
+
 /*
  * __cpu_disable runs on the processor to be shutdown.
  */
@@ -707,17 +717,6 @@ static void ipi_setup(int cpu)
 		enable_percpu_irq(ipi_irq_base + i, 0);
 }
 
-static void ipi_teardown(int cpu)
-{
-	int i;
-
-	if (WARN_ON_ONCE(!ipi_irq_base))
-		return;
-
-	for (i = 0; i < nr_ipi; i++)
-		disable_percpu_irq(ipi_irq_base + i);
-}
-
 void __init set_smp_ipi_range(int ipi_base, int n)
 {
 	int i;