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    SubjectRe: [PATCH] i2c/tegra: I2C driver uses the suspend_noirq/resume_noirq
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    On Wed, Aug 24, 2011 at 2:28 PM, Stephen Warren <swarren@nvidia.com> wrote:
    > Mark Brown wrote at Thursday, August 11, 2011 9:15 PM:
    >> On Thu, Aug 11, 2011 at 07:59:27PM -0700, Colin Cross wrote:
    >> > On Thu, Aug 11, 2011 at 5:45 PM, Mark Brown
    >>
    >> > > For example with ASoC we'd sort all the components before the ASoC card
    >> > > without regard for their bus dependencies or any other dependencies they
    >> > > have (eg, their regulators). Since the ASoC card is a platform device
    >> > > it's likely to have registered early with no regard for where the buses
    >> > > the card needs are registered. I'd expect there's a reasonable chance
    >> > > it'll actually make things worse in the short term.
    >>
    >> > You can't just move everything after the card, you have to move
    >> > everything after the last device that was probed, and it only works if
    >> > nothing depends on any of the devices that are moved.
    >>
    >> Sorry, I said that the wrong way round due to trying to reply quickly -
    >> the card would be the thing that moves since that's the thing that
    >> actually does the suspend but we've *no* idea which device we need to
    >> move it after.  Since all the function does is a direct move after or
    >> before a single device all we can do is pick one and pray that it's the
    >> right device.
    >
    > Colin,
    >
    > This thread seems to have died down; how should we make progress?
    >
    > It sounds like the suspend_irq solution is the current de-facto standard;
    > not optimal, but all we really have right now and already in use. I could
    > certainly see avoiding this solution if it was the first time it was
    > employed, but re-using it seems reasonable to me?
    >
    > Alternatively, are you attending either Linux Plumbers Conference or the
    > Kernel Summit? Mark implied this topic might well come up for discussion
    > there. Unfortunately, I won't be able to make LPC due to a conflict.
    I don't think I'll be able to make it.

    > (and you'd mentioned having the subsystem maintainers weigh in on this;
    > which sub-system; IRQ, power, I2C, ...?)

    If Ben says its OK, its fine with me. Or maybe Arnd wants to weigh in?
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