Re: [PATCH 5/5] i2c: tegra: convert normal suspend/resume to*_noirq

From: Mark Brown
Date: Tue Jul 24 2012 - 08:52:43 EST


On Tue, Jul 24, 2012 at 12:13:58PM +0300, Peter De Schrijver wrote:
> On Mon, Jul 23, 2012 at 08:24:38PM +0200, Stephen Warren wrote:

> > IIRC, I proposed it before solely to solve some suspend/resume ordering
> > issues, and Colin Cross NAKd it. These days, deferred probe should make
> > this change unnecessary.

> How does deferred probe solve this? Iirc the problem is that i2c is needed to
> talk to the PMIC, so we need to make sure i2c is shutdown last because drivers
> might want to do regulator control in the suspend function.

With probe deferral the drivers will be after the regulator driver in
the DPM list and so be suspended first.
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