linux-kernel - [PATCH] perf: check return value of armpmu_request

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Date:   Mon, 25 Apr 2022 18:04:36 +0800
From:   Ren Yu <renyu@...china.com>
To:     will@...nel.org
Cc:     mark.rutland@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, liqiong@...china.com,
        yuzhe@...china.com, Ren Yu <renyu@...china.com>
Subject: [PATCH] perf: check return value of armpmu_request_irq()

When the function armpmu_request_irq() failed, goto err

Signed-off-by: Ren Yu <renyu@...china.com>
---
 drivers/perf/arm_pmu_acpi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/perf/arm_pmu_acpi.c b/drivers/perf/arm_pmu_acpi.c
index f5c7a845cd7b..96ffadd654ff 100644
--- a/drivers/perf/arm_pmu_acpi.c
+++ b/drivers/perf/arm_pmu_acpi.c
@@ -159,7 +159,9 @@ static int arm_pmu_acpi_parse_irqs(void)
 		 * them with their PMUs.
 		 */
 		per_cpu(pmu_irqs, cpu) = irq;
-		armpmu_request_irq(irq, cpu);
+		err = armpmu_request_irq(irq, cpu);
+		if (err)
+			goto out_err;
 	}
 
 	return 0;
-- 
2.25.1