linux-kernel - [PATCH 5.11 256/306] perf/arm_dmc620_pmu: Fix error return code in dmc620_pmu_device

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Date:   Mon, 15 Mar 2021 14:55:19 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hulk Robot <hulkci@...wei.com>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        Will Deacon <will@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 256/306] perf/arm_dmc620_pmu: Fix error return code in dmc620_pmu_device_probe()

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Wei Yongjun <weiyongjun1@...wei.com>

[ Upstream commit c8e3866836528a4ba3b0535834f03768d74f7d8e ]

Fix to return negative error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 53c218da220c ("driver/perf: Add PMU driver for the ARM DMC-620 memory controller")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Link: https://lore.kernel.org/r/20210312080421.277562-1-weiyongjun1@huawei.com
Signed-off-by: Will Deacon <will@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/perf/arm_dmc620_pmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/perf/arm_dmc620_pmu.c b/drivers/perf/arm_dmc620_pmu.c
index 004930eb4bbb..b50b47f1a0d9 100644
--- a/drivers/perf/arm_dmc620_pmu.c
+++ b/drivers/perf/arm_dmc620_pmu.c
@@ -681,6 +681,7 @@ static int dmc620_pmu_device_probe(struct platform_device *pdev)
 	if (!name) {
 		dev_err(&pdev->dev,
 			  "Create name failed, PMU @%pa\n", &res->start);
+		ret = -ENOMEM;
 		goto out_teardown_dev;
 	}
 
-- 
2.30.1