On Mon, Dec 05, 2011 at 01:16:39PM -0600, Rob Herring wrote: [...] > At least for DT enabled platforms, we could force "no irq" to be 0 in > the DT irq code. Searching the dts files, I found 2 occurrences of IRQ0. Please note that there are HW IRQ numbers and "Virtual" IRQ numbers. dev->irq and thus the thing that we pass into request_irq() is a virtual IRQ thing, a "cookie". While in device tree you see real HW IRQ numbers. Legal VIRQ is always > 0, while HW IRQ could be >= 0. > Prima2 has timer on IRQ0, and VersatileAB has watchdog on IRQ0. Prima2 > should be fine currently as it doesn't use the of_irq_* functions to get > the timer irq, but that is an issue as it skips any translation. > VersatileAB should be okay with the VIC irqdomain support. It shouldn't be an issue to use of_irq_*() functions for these IRQs. of_irq_*() will remap HW IRQ 0 to some other VIRQ. If it does not do this currently, then it's a bug and should be fixed. Thanks, -- Anton Vorontsov Email: cbouatmailru@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
