From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: Sean Wang <sean.wang@mediatek.com>, Vinod Koul <vkoul@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Cc: Rob Herring <robh+dt@kernel.org>,
linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
Prabhakar <prabhakar.csengg@gmail.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH 2/3] dmaengine: mediatek: mtk-hsdma: Use platform_get_irq() to get the interrupt
Date: Wed, 22 Dec 2021 16:15:33 +0000 [thread overview]
Message-ID: <20211222161534.1263-3-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20211222161534.1263-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
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@bp.renesas.com>
---
drivers/dma/mediatek/mtk-hsdma.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c
index 6ad8afbb95f2..c0fffde7fe08 100644
--- a/drivers/dma/mediatek/mtk-hsdma.c
+++ b/drivers/dma/mediatek/mtk-hsdma.c
@@ -923,13 +923,10 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
return PTR_ERR(hsdma->clk);
}
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res) {
- dev_err(&pdev->dev, "No irq resource for %s\n",
- dev_name(&pdev->dev));
- return -EINVAL;
- }
- hsdma->irq = res->start;
+ err = platform_get_irq(pdev, 0);
+ if (err < 0)
+ return err;
+ hsdma->irq = err;
refcount_set(&hsdma->pc_refcnt, 0);
spin_lock_init(&hsdma->lock);
--
2.17.1
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next prev parent reply other threads:[~2021-12-22 16:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-22 16:15 [PATCH 0/3] dmaengine: Use platform_get_irq*() variants to fetch IRQ's Lad Prabhakar
2021-12-22 16:15 ` [PATCH 1/3] dmaengine: nbpfaxi: Use platform_get_irq_optional() to get the interrupt Lad Prabhakar
2021-12-25 17:46 ` Andy Shevchenko
2021-12-25 23:50 ` Lad, Prabhakar
2021-12-22 16:15 ` Lad Prabhakar [this message]
2021-12-22 16:15 ` [PATCH 3/3] dmaengine: mediatek-cqdma: Use platform_get_irq() " Lad Prabhakar
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