Messages in this thread | | | Date | Tue, 7 Oct 2008 10:37:23 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] pata_of_platform: fix no irq handling |
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> > This was discussed years ago. > > > > http://lkml.org/lkml/2005/11/22/159 > > http://lkml.org/lkml/2005/11/22/227 > > > > Would this break any existing platforms? If so, can those be fixed > together or does it become a much bigger problem that way?
Zero means no IRQ. Any platform with bits of code left over exposing IRQ 0 is already not supported by lots of driver code including libata.
As IRQs are unsigned using -1 is asking for trouble
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