linux-kernel - [PATCH v2 13/13] media: coda: Use platform_get

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Message-Id: <20220111002314.15213-14-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Tue, 11 Jan 2022 00:23:14 +0000
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     linux-media@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Prabhakar <prabhakar.csengg@...il.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 13/13] media: coda: 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>
---
v1->v2
* No change.
---
 drivers/media/platform/coda/imx-vdoa.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/coda/imx-vdoa.c b/drivers/media/platform/coda/imx-vdoa.c
index 00643f37b3e6..c70871bae193 100644
--- a/drivers/media/platform/coda/imx-vdoa.c
+++ b/drivers/media/platform/coda/imx-vdoa.c
@@ -284,7 +284,6 @@ EXPORT_SYMBOL(vdoa_context_configure);
 static int vdoa_probe(struct platform_device *pdev)
 {
 	struct vdoa_data *vdoa;
-	struct resource *res;
 	int ret;
 
 	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
@@ -309,10 +308,10 @@ static int vdoa_probe(struct platform_device *pdev)
 	if (IS_ERR(vdoa->regs))
 		return PTR_ERR(vdoa->regs);
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res)
-		return -EINVAL;
-	ret = devm_request_threaded_irq(&pdev->dev, res->start, NULL,
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		return ret;
+	ret = devm_request_threaded_irq(&pdev->dev, ret, NULL,
 					vdoa_irq_handler, IRQF_ONESHOT,
 					"vdoa", vdoa);
 	if (ret < 0) {
-- 
2.17.1