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From: Doug Brown <doug@schmorgal.com>
To: Daniel Mack <daniel@zonque.org>,
	Haojian Zhuang <haojian.zhuang@gmail.com>,
	Robert Jarzmik <robert.jarzmik@free.fr>,
	Vinod Koul <vkoul@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org,
	Doug Brown <doug@schmorgal.com>
Subject: [PATCH] dmaengine: pxa_dma: use platform_get_irq_optional
Date: Mon,  5 Sep 2022 17:07:09 -0700	[thread overview]
Message-ID: <20220906000709.52705-1-doug@schmorgal.com> (raw)

The first IRQ is required, but IRQs 1 through (nb_phy_chans - 1) are
optional, because on some platforms (e.g. PXA168) there is a single IRQ
shared between all channels.

This change inhibits a flood of "IRQ index # not found" messages at
startup. Tested on a PXA168-based device.

Fixes: 7723f4c5ecdb ("driver core: platform: Add an error message to platform_get_irq*()"
Signed-off-by: Doug Brown <doug@schmorgal.com>
---
 drivers/dma/pxa_dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index e7034f6f3994..22a392fe6d32 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -1247,14 +1247,14 @@ static int pxad_init_phys(struct platform_device *op,
 		return -ENOMEM;
 
 	for (i = 0; i < nb_phy_chans; i++)
-		if (platform_get_irq(op, i) > 0)
+		if (platform_get_irq_optional(op, i) > 0)
 			nr_irq++;
 
 	for (i = 0; i < nb_phy_chans; i++) {
 		phy = &pdev->phys[i];
 		phy->base = pdev->base;
 		phy->idx = i;
-		irq = platform_get_irq(op, i);
+		irq = platform_get_irq_optional(op, i);
 		if ((nr_irq > 1) && (irq > 0))
 			ret = devm_request_irq(&op->dev, irq,
 					       pxad_chan_handler,
-- 
2.25.1


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             reply	other threads:[~2022-09-06  0:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-06  0:07 Doug Brown [this message]
2022-10-19 14:26 ` [PATCH] dmaengine: pxa_dma: use platform_get_irq_optional Vinod Koul

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