Re: [PATCH 2/2] talitos: Freescale integrated security engine (SEC) driver

[Scott Wood <scottwood@xxxxxxxxxxxxx>]

Kim Phillips wrote:
> On Fri, 30 May 2008 14:41:17 -0500
> Scott Wood <scottwood@xxxxxxxxxxxxx> wrote:
>
> > Kim Phillips wrote:
> > > On Fri, 30 May 2008 22:09:04 +0400
> > > Evgeniy Polyakov <johnpol@xxxxxxxxxxx> wrote:
> > > > Don't you want to protect against simultaneous access to register space
> > > > from different CPUs? Or it is single processor board only?
> > > Doesn't linux mask the IRQ line for the interrupt currently being
> > > serviced, and on all processors?
> > Yes.  Could there be interference from non-interrupt driver code on 
> > another cpu (or interrupted code), though?
>
> not that I can see - the fetch fifo register writes are protected with
> per-channel spinlocks.

But you don't take the spinlocks from the interrupt handler.

-Scott
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