From 165d87f6cd57b297b62ff73384a85791f5ecf80f Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Wed, 4 Jul 2018 11:50:50 +0100
Subject: [PATCH 082/105] drivers/perf: Initialise return value in
armpmu_request_irqs()
Git-commit: 59b62e7ad0874681dc4f84cac90cc991dc265809
Patch-mainline: v4.19-rc1
References: fate#325865,fate#325861
If a PMU doesn't have any IRQs, we should return 0 from
armpmu_request_irqs(), rather than uninitialised stack.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/perf/arm_pmu_platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 62c622f9d1f3..30c71659ac4d 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -159,7 +159,7 @@ static int pmu_parse_irqs(struct arm_pmu *pmu)
static int armpmu_request_irqs(struct arm_pmu *armpmu)
{
struct pmu_hw_events __percpu *hw_events = armpmu->hw_events;
- int cpu, err;
+ int cpu, err = 0;
for_each_cpu(cpu, &armpmu->supported_cpus) {
int irq = per_cpu(hw_events->irq, cpu);
--
2.11.0