You can introduce isa_intr_establish_no_panic() (just pick a better name :)
which returns NULL on failure and then slowly migrate the drivers over
to using that.
I think that would be a better solution.

    -- Lennart

jchacon@genuity.net wrote:

> There's 2 ways to really look at this:
>
> 1. wssattach() looks at already assigned irq's and doesn't try to attach if
>    it's irq is taken. (Ok, yuck..violates some abstraction and gets very bad
>    very quick).
>
> 2. Have isa_intr_establish return NULL on conflict cases and all drivers that
>    use it start checking return values. (Not horrible, but would require some
>    fairly wide code changes).
>
> James