Re: [PATCH] NCR53c406a.c warning

[Alan Cox]

On Gwe, 2003-09-12 at 15:16, Maciej W. Rozycki wrote:
>  I've encountered an ISA adapter using this chip in polled mode (no ISA
> IRQ line routed to the chip) quite recently.  But I can't say if the guy
> using it won't throw it away before final 2.6. ;-)

For a lot of these dumb controllers polled I/O seems to materially 
outperform interrupt driven I/O on SMP boxes - its true of the NCR5380
for example. We trade a ton of locking jamming the box up for a CPU
thats spending some of its time pretending to be half a scsi chip.

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