linux-kernel - [PATCH] soc: qcom: aoss: Fix missing put_device call in qmp

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Date:   Sat,  8 Jan 2022 09:59:31 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linmq006@...il.com, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Deepak Kumar Singh <deesin@...eaurora.org>,
        Chris Lew <clew@...eaurora.org>,
        Stephen Boyd <swboyd@...omium.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] soc: qcom: aoss: Fix missing put_device call in qmp_get

The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore.
Add the corresponding 'put_device()' in the error handling paths.

Fixes: 8c75d585b931 ("soc: qcom: aoss: Expose send for generic usecase")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/soc/qcom/qcom_aoss.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index 34acf58bbb0d..e234d78b33e7 100644
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c
@@ -451,7 +451,11 @@ struct qmp *qmp_get(struct device *dev)
 
 	qmp = platform_get_drvdata(pdev);
 
-	return qmp ? qmp : ERR_PTR(-EPROBE_DEFER);
+	if (!qmp) {
+		put_device(&pdev->dev);
+		return ERR_PTR(-EPROBE_DEFER);
+	}
+	return qmp;
 }
 EXPORT_SYMBOL(qmp_get);
 
-- 
2.17.1