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bcm2708-dmaengine: Use platform_get_irq

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The platform driver framework no longer creates IRQ resources for
platform devices because they are expected to use platform_get_irq.
This causes the bcm2808_fb acceleration to fail.

Fix the problem by calling platform_get_irq as intended.

See: https://github.com/raspberrypi/linux/issues/5131

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
This commit is contained in:
Phil Elwell
2022-08-17 12:24:22 +01:00
committed by Dom Cobley
parent caf9ea7d93
commit ee24a875d9
1 changed files with 4 additions and 4 deletions
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8
drivers/dma/bcm2708-dmaengine.c
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@@ -199,8 +199,8 @@ extern int bcm_dma_chan_alloc(unsigned required_feature_set,
{
struct vc_dmaman *dmaman = g_dmaman;
struct platform_device *pdev = to_platform_device(dmaman_dev);
struct resource *r;
int chan;
int irq;
if (!dmaman_dev)
return -ENODEV;
@@ -210,8 +210,8 @@ extern int bcm_dma_chan_alloc(unsigned required_feature_set,
if (chan < 0)
goto out;
r = platform_get_resource(pdev, IORESOURCE_IRQ, (unsigned int)chan);
if (!r) {
irq = platform_get_irq(pdev, (unsigned int)chan);
if (irq < 0) {
dev_err(dmaman_dev, "failed to get irq for DMA channel %d\n",
chan);
vc_dmaman_chan_free(dmaman, chan);
@@ -220,7 +220,7 @@ extern int bcm_dma_chan_alloc(unsigned required_feature_set,
}
*out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base, chan);
*out_dma_irq = r->start;
*out_dma_irq = irq;
dev_dbg(dmaman_dev,
"Legacy API allocated channel=%d, base=%p, irq=%i\n",
chan, *out_dma_base, *out_dma_irq);