> > IRQ is shared with the disk driver, box dead.
>
> Err ?
>
> IRQ happens
>
> IRQ is disabled by the generic handling code
>
> Handler is invoked and checks, whether the irq is from the device or
> not.
> - If not, it returns IRQ_NONE, so the next driver (e.g. disk) is
> invoked.
> - If yes, it masks the chip on the device, which disables the chip
> interrupt line and returns IRQ_HANDLED.
>
> In both cases the IRQ gets reenabled from the generic irq handling code
> on return, so why is the box dead ?
I wrote this before your "generic" layer was in fact explained further to
not be generic at all and involve a new driver for each device. Your
original explanation was not clear.
Alan
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