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usb: musb: core: fix IRQ check

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musb_probe() only regards 0 as a wrong IRQ number, despite platform_get_irq()
that it calls returns -ENXIO in that case. It leads to musb_init_controller()
calling request_irq() with a negative IRQ number, and when it naturally
fails, the following is printed to the console:

request_irq -6 failed!
musb_init_controller failed with status -19

Fix musb_probe() to filter out the error values as well as 0.

Signed-off-by: Sergei Shtylyov <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
This commit is contained in:
Sergei Shtylyov 2010-12-10 21:03:29 +03:00 • committed by Felipe Balbi
commit 541079de88
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/musb/musb_core.c
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@ -2185,7 +2185,7 @@ static int __init musb_probe(struct platform_device *pdev)
void __iomem *base;
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iomem || irq == 0)
if (!iomem || irq <= 0)
return -ENODEV;
base = ioremap(iomem->start, resource_size(iomem));