Messages in this thread |  | | Subject | Re: [bug 2.5.69] xirc2ps_cs, irq 3: nobody cared, shutdown hangs | From | David Woodhouse <> | Date | Sun, 11 May 2003 23:55:04 +0100 |
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On Sun, 2003-05-11 at 22:40, Alan Cox wrote: > On Sul, 2003-05-11 at 23:08, David Woodhouse wrote: > > PCMCIA has varying pin length for the CD pins and hence gives you a few > > milliseconds of warning before the card is _actually_ disconnected. > > Which is less than the worst case IRQ response time (or indeed on some > PCs the worst case CPU hold off time for the PCI bus)
On some hardware.
> > After that period of time has elapsed and the card is actually gone, you > > _really_ don't want to be bitbanging its ports. > > > > > Its quite safe to do so. > > > > Not on all platforms. > > On all that matters it is safe, the others are unfixable anyway
Said 'others' will tend to give you better worst-case IRQ latency than a PeeCee with broken PCI host bridge and IDE controllers :)
And even if that weren't the case, you appear to be asserting that because a problem may still be triggerable in a worst-case scenario with certain hardware configurations, we shouldn't attempt to fix it at all. With that I disagree.
-- dwmw2
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