On Tue, Jan 28, 2014 at 4:02 AM, Sonic Zhang <sonic....@gmail.com> wrote:
> From: Sonic Zhang <sonic.zh...@analog.com> > > Negative irq_base means there is no fixed Linux irq mappings are created from > the platform data. > The driver calls irq_create_mapping to allocate a virtual Linux irq. Those IRQs are not any more "virtual" than any other Linux IRQ so I don't like this way of putting things. They are dynamically allocated though. The whole "virq" thing is just one big confusion, somehow people are under the impression that some IRQ numbers in the kernel are more "real" than others just because they happen to map 1-to-1 to a certain HW IRQ on the primary IRQ controller, but this is just pure luck. This is one reason we're trying to get rid of IRQ numbers altogether (if that will ever go anywhere). > Signed-off-by: Sonic Zhang <sonic.zh...@analog.com> > --- > v2-changes: > - reword the patch description I applied v1 anyway. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/