From: Cosmin Tanislav Date: Mon, 5 Jan 2026 11:44:42 +0000 (+0200) Subject: dmaengine: sh: rz_dmac: make error interrupt optional X-Git-Tag: v7.1-rc1~109^2~22 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b34f3fcae72a0afdd1a966fd68309b461bf678e6;p=thirdparty%2Fkernel%2Flinux.git dmaengine: sh: rz_dmac: make error interrupt optional 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 Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20260105114445.878262-2-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index d84ca551b2bf8..83aaf40542807 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -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. */