usb: musb: musbhsdma: fix IRQ check
dma_controller_create() in this MUSB DMA driver only regards 0 as a wrong IRQ number, despite platform_get_irq_byname() that it calls returns -ENXIO in that case. It leads to calling request_irq() with a negative IRQ number, and when it naturally fails, the following is printed to the console: request_irq -6 failed! and the DMA controller is not created. Fix this function to filter out the error values as well as 0. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -388,7 +388,7 @@ dma_controller_create(struct musb *musb, void __iomem *base)
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struct platform_device *pdev = to_platform_device(dev);
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int irq = platform_get_irq_byname(pdev, "dma");
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if (irq == 0) {
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if (irq <= 0) {
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dev_err(dev, "No DMA interrupt line!\n");
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return NULL;
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}
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