linux-kernel - [PATCH 1/2] ASoC: xlnx: Use platform_get

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Message-Id: <20211219181039.24812-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Sun, 19 Dec 2021 18:10:38 +0000
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Michal Simek <michal.simek@...inx.com>
Cc:     alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 1/2] ASoC: xlnx: 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 bypasses the hierarchical setup and messes 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: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 sound/soc/xilinx/xlnx_spdif.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/sound/soc/xilinx/xlnx_spdif.c b/sound/soc/xilinx/xlnx_spdif.c
index e2ca087adee6..cba0e868a7d7 100644
--- a/sound/soc/xilinx/xlnx_spdif.c
+++ b/sound/soc/xilinx/xlnx_spdif.c
@@ -237,7 +237,6 @@ MODULE_DEVICE_TABLE(of, xlnx_spdif_of_match);
 static int xlnx_spdif_probe(struct platform_device *pdev)
 {
 	int ret;
-	struct resource *res;
 	struct snd_soc_dai_driver *dai_drv;
 	struct spdif_dev_data *ctx;
 
@@ -273,13 +272,10 @@ static int xlnx_spdif_probe(struct platform_device *pdev)
 	if (ctx->mode) {
 		dai_drv = &xlnx_spdif_tx_dai;
 	} else {
-		res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-		if (!res) {
-			dev_err(dev, "No IRQ resource found\n");
-			ret = -ENODEV;
+		ret = platform_get_irq(pdev, 0);
+		if (ret < 0)
 			goto clk_err;
-		}
-		ret = devm_request_irq(dev, res->start,
+		ret = devm_request_irq(dev, ret,
 				       xlnx_spdifrx_irq_handler,
 				       0, "XLNX_SPDIF_RX", ctx);
 		if (ret) {
-- 
2.17.1