On Thu, Sep 04, 2014 at 12:04:11PM -0700, Doug Anderson wrote:
> Dmitry,
> 
> On Thu, Sep 4, 2014 at 10:33 AM, Dmitry Torokhov
> <[email protected]> wrote:
> > On Wed, Sep 03, 2014 at 09:18:42PM -0700, Doug Anderson wrote:
> >> Chris,
> >>
> >> On Wed, Sep 3, 2014 at 6:12 PM, Chris Zhong <[email protected]> wrote:
> >> > Adding RTC driver for supporting RTC device present inside RK808 PMIC.
> >> >
> >> > Signed-off-by: Chris Zhong <[email protected]>
> >> > Signed-off-by: Zhang Qing <[email protected]>
> >> >
> >> > Tested-by: Heiko Stuebner <[email protected]>
> >>
> >> Reviewed-by: Doug Anderson <[email protected]>
> >> Tested-by: Doug Anderson <[email protected]>
> >>
> >>
> >> > +       rk808_rtc->irq = platform_get_irq(pdev, 0);
> >> > +       if (rk808_rtc->irq < 0) {
> >> > +               dev_err(&pdev->dev, "Wake up is not possible as irq = 
> >> > %d\n",
> >> > +                       rk808_rtc->irq);
> >>
> >> Technically you shouldn't print the error if it's -EPROBE_DEFER.
> >> ...but I think that's really unlikely here (I can't imagine any real
> >> cases where the interrupt parent for RK808 would actually be deferred)
> >> so I won't push it.
> >
> > Doug, platform_get_irq() simply iterates through IRQ resources assigned to 
> > the
> > device, which are populated at platform device creation time. The only 
> > error it
> > returns ever is -ENXIO, so we are fine here.
> 
> I think maybe you're looking at older source code?  The source code I
> have for mainline Linux specifically includes code handling
> EPROBE_DEFER in platform_get_irq().

Ah, indeed. That -EPROBE_DEFER monstrosity keeps spreading :(

-- 
Dmitry
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