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dmaengine: nbpfaxi: Use platform_get_irq_optional() to get the interrupt

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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_optional().

There are no non-DT users for this driver so interrupt range
(irq_res->start-irq_res->end) is no longer required and with DT we will
be sure it will be a single IRQ resource for each index.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220404155557.27316-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Lad Prabhakar 2022-04-04 16:55:55 +01:00 committed by Vinod Koul
parent 448a0994cc
commit 8b0c99371a
1 changed files with 6 additions and 8 deletions
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14
drivers/dma/nbpfaxi.c
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@ -1294,7 +1294,7 @@ static int nbpf_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
struct nbpf_device *nbpf;
struct dma_device *dma_dev;
struct resource *iomem, *irq_res;
struct resource *iomem;
const struct nbpf_config *cfg;
int num_channels;
int ret, irq, eirq, i;
@ -1335,13 +1335,11 @@ static int nbpf_probe(struct platform_device *pdev)
nbpf->config = cfg;
for (i = 0; irqs < ARRAY_SIZE(irqbuf); i++) {
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
if (!irq_res)
break;
for (irq = irq_res->start; irq <= irq_res->end;
irq++, irqs++)
irqbuf[irqs] = irq;
irq = platform_get_irq_optional(pdev, i);
if (irq < 0 && irq != -ENXIO)
return irq;
if (irq > 0)
irqbuf[irqs++] = irq;
}
/*