linux-kernel - [PATCH] sound/mips: Use platform_get

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Message-Id: <20220225111929.17194-1-tangmeng@uniontech.com>
Date:   Fri, 25 Feb 2022 19:19:29 +0800
From:   Meng Tang <tangmeng@...ontech.com>
To:     perex@...ex.cz, tiwai@...e.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Meng Tang <tangmeng@...ontech.com>
Subject: [PATCH] sound/mips: Use platform_get_irq() to get the interrupt

platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypassed the hierarchical setup and messed up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().

Signed-off-by: Meng Tang <tangmeng@...ontech.com>
---
 sound/mips/snd-n64.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/sound/mips/snd-n64.c b/sound/mips/snd-n64.c
index 463a6fe589eb..bff6d85b8fe2 100644
--- a/sound/mips/snd-n64.c
+++ b/sound/mips/snd-n64.c
@@ -289,8 +289,7 @@ static int __init n64audio_probe(struct platform_device *pdev)
 	struct snd_card *card;
 	struct snd_pcm *pcm;
 	struct n64audio *priv;
-	struct resource *res;
-	int err;
+	int err, irq;
 
 	err = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1,
 			   SNDRV_DEFAULT_STR1,
@@ -337,12 +336,12 @@ static int __init n64audio_probe(struct platform_device *pdev)
 	strcpy(card->shortname, "N64 Audio");
 	strcpy(card->longname, "N64 Audio");
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
 		err = -EINVAL;
 		goto fail_dma_alloc;
 	}
-	if (devm_request_irq(&pdev->dev, res->start, n64audio_isr,
+	if (devm_request_irq(&pdev->dev, irq, n64audio_isr,
 				IRQF_SHARED, "N64 Audio", priv)) {
 		err = -EBUSY;
 		goto fail_dma_alloc;
-- 
2.20.1