linux-kernel - [PATCH] ata: pata_mpc52xx: Replace NO

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Message-Id: <a8c87c6d8dd6d9e57c515036a333ff89fc56bcbf.1665033366.git.christophe.leroy@csgroup.eu>
Date:   Thu,  6 Oct 2022 07:17:07 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Sergey Shtylyov <s.shtylyov@....ru>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: [PATCH] ata: pata_mpc52xx: Replace NO_IRQ by 0

NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 drivers/ata/pata_mpc52xx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c
index 6559b606736d..3ebd6522a1fd 100644
--- a/drivers/ata/pata_mpc52xx.c
+++ b/drivers/ata/pata_mpc52xx.c
@@ -731,7 +731,7 @@ static int mpc52xx_ata_probe(struct platform_device *op)
 		udma_mask = ATA_UDMA2 & ((1 << (*prop + 1)) - 1);
 
 	ata_irq = irq_of_parse_and_map(op->dev.of_node, 0);
-	if (ata_irq == NO_IRQ) {
+	if (!ata_irq) {
 		dev_err(&op->dev, "error mapping irq\n");
 		return -EINVAL;
 	}
-- 
2.37.1