linux-kernel - [PATCH] platform/mellanox: nvsw-sn2201: Add check for platform_device_add

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Message-Id: <20240605032745.2916183-1-nichen@iscas.ac.cn>
Date: Wed,  5 Jun 2024 11:27:45 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	vadimp@...dia.com
Cc: platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] platform/mellanox: nvsw-sn2201: Add check for platform_device_add_resources

Add check for the return value of platform_device_add_resources() and
return the error if it fails in order to catch the error.

Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 drivers/platform/mellanox/nvsw-sn2201.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/mellanox/nvsw-sn2201.c b/drivers/platform/mellanox/nvsw-sn2201.c
index 3ef655591424..abe7be602f84 100644
--- a/drivers/platform/mellanox/nvsw-sn2201.c
+++ b/drivers/platform/mellanox/nvsw-sn2201.c
@@ -1198,6 +1198,7 @@ static int nvsw_sn2201_config_pre_init(struct nvsw_sn2201 *nvsw_sn2201)
 static int nvsw_sn2201_probe(struct platform_device *pdev)
 {
 	struct nvsw_sn2201 *nvsw_sn2201;
+	int ret;
 
 	nvsw_sn2201 = devm_kzalloc(&pdev->dev, sizeof(*nvsw_sn2201), GFP_KERNEL);
 	if (!nvsw_sn2201)
@@ -1205,8 +1206,10 @@ static int nvsw_sn2201_probe(struct platform_device *pdev)
 
 	nvsw_sn2201->dev = &pdev->dev;
 	platform_set_drvdata(pdev, nvsw_sn2201);
-	platform_device_add_resources(pdev, nvsw_sn2201_lpc_io_resources,
+	ret = platform_device_add_resources(pdev, nvsw_sn2201_lpc_io_resources,
 				      ARRAY_SIZE(nvsw_sn2201_lpc_io_resources));
+	if (ret)
+		return ret;
 
 	nvsw_sn2201->main_mux_deferred_nr = NVSW_SN2201_MAIN_MUX_DEFER_NR;
 	nvsw_sn2201->main_mux_devs = nvsw_sn2201_main_mux_brdinfo;
-- 
2.25.1