linux-kernel - [PATCH v2] peci: aspeed: fix error check return value of platform_get

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Message-Id: <20220413010425.2534887-1-lv.ruyi@zte.com.cn>
Date:   Wed, 13 Apr 2022 01:04:25 +0000
From:   cgel.zte@...il.com
To:     iwona.winiarska@...el.com
Cc:     andrew@...id.au, cgel.zte@...il.com, jae.hyun.yoo@...ux.intel.com,
        joel@....id.au, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        lv.ruyi@....com.cn, openbmc@...ts.ozlabs.org,
        pierre-louis.bossart@...ux.intel.com,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH v2] peci: aspeed: fix error check return value of platform_get_irq()

From: Lv Ruyi <lv.ruyi@....com.cn>

platform_get_irq() return negative value on failure, so null check of
priv->irq is incorrect. Fix it by comparing whether it is less than zero.

Fixes: a85e4c52086c ("peci: Add peci-aspeed controller driver")
Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@....com.cn>
---
v2: prefix the subject with "peci: aspeed:"
---
 drivers/peci/controller/peci-aspeed.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/peci/controller/peci-aspeed.c b/drivers/peci/controller/peci-aspeed.c
index 1925ddc13f00..731c5d8f75c6 100644
--- a/drivers/peci/controller/peci-aspeed.c
+++ b/drivers/peci/controller/peci-aspeed.c
@@ -523,7 +523,7 @@ static int aspeed_peci_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->base);
 
 	priv->irq = platform_get_irq(pdev, 0);
-	if (!priv->irq)
+	if (priv->irq < 0)
 		return priv->irq;
 
 	ret = devm_request_irq(&pdev->dev, priv->irq, aspeed_peci_irq_handler,
-- 
2.25.1