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EINVAL indicates an invalid argument. A stray interrupt is not an invalid argument, but being called at the wrong time. This seems much better described as EIO.

Other platforms limit the number of times a given stray interrupt is reported. Since the only error returned by intr_isrc_dispatch() is for stray interrupts, returning the count instead makes sense.

EINVAL indicates an invalid argument. AOther platforms limit the number of times a given stray interrupt is not an invalid argument, but being called at the wrong timereported. This seems muchSince the only error returned by intr_isrc_dispatch() is for better described as EIOstray interrupts, returning the count instead makes sense.