linux-kernel - [PATCH v2 RESEND] drivers: soc: fix dead code in aspeed_lpc_snoop_config

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Message-Id: <20230324021559.249347-1-dddddd@hust.edu.cn>
Date:   Fri, 24 Mar 2023 10:15:59 +0800
From:   huyinhao <dddddd@...t.edu.cn>
To:     joel@....id.au, andrew@...id.au
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        hust-os-kernel-patches@...glegroups.com,
        huyinhao <dddddd@...t.edu.cn>, Dongliang Mu <dzm91@...t.edu.cn>
Subject: [PATCH v2 RESEND] drivers: soc: fix dead code in aspeed_lpc_snoop_config_irq

>From the comment of platform_get_irq, it only returns non-zero IRQ
number and negative error number, other than zero.

Fix this if condition when platform_get_irq returns a negative
error number.

Signed-off-by: huyinhao <dddddd@...t.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@...t.edu.cn>
---
 drivers/soc/aspeed/aspeed-lpc-snoop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c
index eceeaf8dfbeb..c4a03b3a5cf8 100644
--- a/drivers/soc/aspeed/aspeed-lpc-snoop.c
+++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c
@@ -167,8 +167,8 @@ static int aspeed_lpc_snoop_config_irq(struct aspeed_lpc_snoop *lpc_snoop,
 	int rc;
 
 	lpc_snoop->irq = platform_get_irq(pdev, 0);
-	if (!lpc_snoop->irq)
-		return -ENODEV;
+	if (lpc_snoop->irq < 0)
+		return lpc_snoop->irq;
 
 	rc = devm_request_irq(dev, lpc_snoop->irq,
 			      aspeed_lpc_snoop_irq, IRQF_SHARED,
-- 
2.34.1