linux-kernel - [PATCH] uio: uio_fsl_elbc_gpcm: Replace NO

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Message-Id: <68ccdf51811ab26bdb452babf17ae860fa4900c2.1665034535.git.christophe.leroy@csgroup.eu>
Date:   Thu,  6 Oct 2022 07:36:50 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH] uio: uio_fsl_elbc_gpcm: 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/uio/uio_fsl_elbc_gpcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c
index 7d8eb9dc2068..82dda799f327 100644
--- a/drivers/uio/uio_fsl_elbc_gpcm.c
+++ b/drivers/uio/uio_fsl_elbc_gpcm.c
@@ -390,13 +390,13 @@ static int uio_fsl_elbc_gpcm_probe(struct platform_device *pdev)
 	info->priv = priv;
 	info->name = uio_name;
 	info->version = "0.0.1";
-	if (irq != NO_IRQ) {
+	if (irq) {
 		if (priv->irq_handler) {
 			info->irq = irq;
 			info->irq_flags = IRQF_SHARED;
 			info->handler = priv->irq_handler;
 		} else {
-			irq = NO_IRQ;
+			irq = 0;
 			dev_warn(priv->dev, "ignoring irq, no handler\n");
 		}
 	}
@@ -417,7 +417,7 @@ static int uio_fsl_elbc_gpcm_probe(struct platform_device *pdev)
 	dev_info(priv->dev,
 		 "eLBC/GPCM device (%s) at 0x%llx, bank %d, irq=%d\n",
 		 priv->name, (unsigned long long)res.start, priv->bank,
-		 irq != NO_IRQ ? irq : -1);
+		 irq ? : -1);
 
 	return 0;
 out_err2:
-- 
2.37.1