linux-kernel - [PATCH v2] mfd: intel-lpss: Add missing check for platform_get

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Message-Id: <20230609014818.28475-1-jiasheng@iscas.ac.cn>
Date:   Fri,  9 Jun 2023 09:48:18 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     lee@...nel.org
Cc:     linux-kernel@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH v2] mfd: intel-lpss: Add missing check for platform_get_resource

Add the missing check for platform_get_resource and return error
if it fails.

Fixes: 4b45efe85263 ("mfd: Add support for Intel Sunrisepoint LPSS devices")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
Changelog:

v1 -> v2:

1. Replace "-ENOMEM" with "-ENODEV".
---
 drivers/mfd/intel-lpss-acpi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
index a143c8dca2d9..212818aef93e 100644
--- a/drivers/mfd/intel-lpss-acpi.c
+++ b/drivers/mfd/intel-lpss-acpi.c
@@ -183,6 +183,9 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!info->mem)
+		return -ENODEV;
+
 	info->irq = platform_get_irq(pdev, 0);
 
 	ret = intel_lpss_probe(&pdev->dev, info);
-- 
2.25.1