linux-kernel - [PATCH 5.19 011/155] peci: aspeed: fix error check return value of platform_get

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Message-Id: <20220906132829.913662661@linuxfoundation.org>
Date:   Tue,  6 Sep 2022 15:29:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zeal Robot <zealci@....com.cn>,
        Lv Ruyi <lv.ruyi@....com.cn>,
        Iwona Winiarska <iwona.winiarska@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 011/155] peci: aspeed: fix error check return value of platform_get_irq()

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

[ Upstream commit e79b548b7202bb3accdfe64f113129a4340bc2f9 ]

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>
Link: https://lore.kernel.org/r/20220413010425.2534887-1-lv.ruyi@zte.com.cn
Reviewed-by: Iwona Winiarska <iwona.winiarska@...el.com>
Signed-off-by: Iwona Winiarska <iwona.winiarska@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 1925ddc13f002..731c5d8f75c66 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,
-- 
2.35.1