Re: Linux 2.6.17: IRQ handler mismatch in serial code?

[Alan Cox]

Ar Llu, 2006-06-19 am 17:52 -0400, ysgrifennodd Mark Lord:
> > This is not the case for ISA bus. Most ISA hardware is physically unable
> > to share and the drivers for such hardware intentionally grab the IRQ at
> > load time to avoid it being mis-reused.
> 
> Eh?  The vast majority of ISA bus devices have open-collector IRQ lines,

Not in my experience. In the network work at least very few are, they
all drive the chip lines all the time. Thats why Don Becker made sure
such drivers grab the lines at startup. Those which can share IRQ or
move IRQ grab at open

Alan

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