linux-kernel - [PATCH] slimbus: qcom-ngd: Add check for platform_driver

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Date:   Mon, 12 Dec 2022 17:49:50 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     agross@...nel.org, konrad.dybcio@...ainline.org,
        srinivas.kandagatla@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] slimbus: qcom-ngd: Add check for platform_driver_register

Add the check for the return value of platform_driver_register
in order to catch the exception.

Fixes: 917809e2280b ("slimbus: ngd: Add qcom SLIMBus NGD driver")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 76c5e446d243..c16fc9e6d1c6 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -1590,7 +1590,10 @@ static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev)
 		goto err_pdr_lookup;
 	}
 
-	platform_driver_register(&qcom_slim_ngd_driver);
+	ret = platform_driver_register(&qcom_slim_ngd_driver);
+	if (ret < 0)
+		goto err_pdr_lookup;
+
 	return of_qcom_slim_ngd_register(dev, ctrl);
 
 err_pdr_alloc:
-- 
2.25.1