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

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Date:   Tue, 31 Oct 2023 06:36:42 +0000
From:   Chen Ni <nichen@...as.ac.cn>
To:     lee@...nel.org, andriy.shevchenko@...ux.intel.com,
        mika.westerberg@...ux.intel.com
Cc:     linux-kernel@...r.kernel.org, Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] mfd: intel-lpss: Add check for platform_get_irq

The platform_get_irq() might be failed and return a negative result.
So there should have an error handling code.

Fixes: 4b45efe85263 ("mfd: Add support for Intel Sunrisepoint LPSS devices")
Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 drivers/mfd/intel-lpss-acpi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
index 212818aef93e..42b14a80b989 100644
--- a/drivers/mfd/intel-lpss-acpi.c
+++ b/drivers/mfd/intel-lpss-acpi.c
@@ -186,7 +186,11 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev)
 	if (!info->mem)
 		return -ENODEV;
 
-	info->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		return ret;
+
+	info->irq = ret;
 
 	ret = intel_lpss_probe(&pdev->dev, info);
 	if (ret)
-- 
2.25.1