[i2c] [lm-sensors] [patch 2.6.27-rc7] i2c: smbalert# support

Trent Piepho xyzzy at speakeasy.org
Fri Oct 17 22:43:34 CEST 2008


On Fri, 17 Oct 2008, David Brownell wrote:
> ... just to recap this before I scrub old mail from my mbox:
>
> On Friday 26 September 2008, Trent Piepho wrote:
> > > It's not a question of the I2C adapter supporting it.  It's a
> > > question of whether there's an SMBALERT# signal on your board,
> > > which can generate an interrupt.  If it can, this patch has an
> > > IRQ handler which implements the SMBus alert protocol.  Think
> > > of it as sideband signaling ... unknown to that adapter.
> >
> > If nothing is alerting, then the read from the ARA address won't get an ack.
>
> Absolutely nothing you've said makes a real argument against
> providing support for SMBALERT#.

Which isn't surprising, since I wasn't trying to make an argument against
providing support for SMBALERT#.  I was making an argument for why it might
be necessary to do something else.



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