linux-kernel - [PATCH v2] pata_ipx4xx_cf: Fix unsigned comparison with less than zero

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Message-Id: <20210410140757.2093-1-angkery@163.com>
Date:   Sat, 10 Apr 2021 22:07:57 +0800
From:   angkery <angkery@....com>
To:     axboe@...nel.dk
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        Junlin Yang <yangjunlin@...ong.com>
Subject: [PATCH v2] pata_ipx4xx_cf: Fix unsigned comparison with less than zero

From: Junlin Yang <yangjunlin@...ong.com>

The return from the call to platform_get_irq() is int, it can be
a negative error code, however this is being assigned to an unsigned
int variable 'irq', so making 'irq' an int, and change the position to
keep the code format.

Fixes coccicheck warnings:
./drivers/ata/pata_ixp4xx_cf.c:168:5-8:
WARNING: Unsigned expression compared with zero: irq < 0

Signed-off-by: Junlin Yang <yangjunlin@...ong.com>
---
changes in v1:
update the commit information.
changes in v2:
As Sergei said, it should read irq < 0, update commit information.

 drivers/ata/pata_ixp4xx_cf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index abc0e87..43215a4 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -135,12 +135,12 @@ static void ixp4xx_setup_port(struct ata_port *ap,
 
 static int ixp4xx_pata_probe(struct platform_device *pdev)
 {
-	unsigned int irq;
 	struct resource *cs0, *cs1;
 	struct ata_host *host;
 	struct ata_port *ap;
 	struct ixp4xx_pata_data *data = dev_get_platdata(&pdev->dev);
 	int ret;
+	int irq;
 
 	cs0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	cs1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-- 
1.9.1