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dmaengine: sh: rz_dmac: make error interrupt optional

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The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs do not have
an error interrupt for the DMACs, and the current driver implementation
does not make much use of it.

To prepare for adding support for these SoCs, do not error out if the
error interrupt is missing.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260105114445.878262-2-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Cosmin Tanislav 2026-01-05 13:44:42 +02:00 committed by Vinod Koul
parent 2438deea9f
commit b34f3fcae7
1 changed files with 9 additions and 10 deletions
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19
drivers/dma/sh/rz-dmac.c
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@ -956,16 +956,15 @@ static int rz_dmac_probe(struct platform_device *pdev)
}
/* Register interrupt handler for error */
irq = platform_get_irq_byname(pdev, irqname);
if (irq < 0)
return irq;
ret = devm_request_irq(&pdev->dev, irq, rz_dmac_irq_handler, 0,
irqname, NULL);
if (ret) {
dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
irq, ret);
return ret;
irq = platform_get_irq_byname_optional(pdev, irqname);
if (irq > 0) {
ret = devm_request_irq(&pdev->dev, irq, rz_dmac_irq_handler, 0,
irqname, NULL);
if (ret) {
dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
irq, ret);
return ret;
}
}
/* Initialize the channels. */