Re: [PATCH] mfd/mc13783: near complete rewrite

From: Mark Brown
Date: Mon Nov 02 2009 - 09:09:32 EST

On Mon, Nov 02, 2009 at 02:58:27PM +0100, Uwe Kleine-K?nig wrote:
> On Mon, Nov 02, 2009 at 11:51:01AM +0000, Mark Brown wrote:

> > This might create issues with a request_nounmask() function, though a
> > request plus mask is probably enough - I guess you're using this for
> > your the RTC driver in which case a spurious periodic interrupt is
> > unlikely to be an issue.

> Yes, I use it to simplify things in the RTC driver a bit. I register
> the 1HZ irq unconditionally and only track if it's masked or not. This way
> I can save some case discrimination.

What I've done for wm8350 is just request the IRQ then immediately mask
it and not worry about a periodic notification coming in in the gap -
reporting the extra periodic notification is vanishingly unlikely to do
any harm in the case that the race does crop up.
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