linux-kernel - Re: [Patch v1] rtc: fix for the DA9052 rtc device registration

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Date:	Tue, 19 Mar 2013 17:12:45 +0530
From:	Ashish Jangam <ashish.jangam@...tcummins.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>, <sameo@...ux.intel.com>,
	<p_gortmaker@...oo.com>, <dchen@...semi.com>,
	<rtc-linux@...glegroups.com>,
	Alessandro Zummo <a.zummo@...ertech.it>
Subject: Re: [Patch v1] rtc: fix for the DA9052 rtc device registration

On Mon, 2013-03-18 at 15:21 -0700, Andrew Morton wrote:
> On Fri, 15 Mar 2013 13:59:39 +0530 Ashish Jangam <ashish.jangam@...tcummins.com> wrote:
> 
> > DA9052/53 MFD core handles only virtual irq therefore rtc driver needs
> > to be updated to work on virtual irq. Without this update DA9052/53 rtc 
> > driver will fail during its registration.
> > Also getting irq by it name is no longer supported in DA9052/53 core.
> > 
> > ...
> >
> > --- a/drivers/rtc/rtc-da9052.c
> > +++ b/drivers/rtc/rtc-da9052.c
> > @@ -239,10 +239,10 @@ static int da9052_rtc_probe(struct platform_device *pdev)
> >  
> >  	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
> >  	platform_set_drvdata(pdev, rtc);
> > -	rtc->irq = platform_get_irq_byname(pdev, "ALM");
> > -	ret = request_threaded_irq(rtc->irq, NULL, da9052_rtc_irq,
> > -				   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
> > -				   "ALM", rtc);
> > +	rtc->irq =  DA9052_IRQ_ALARM;
> > +
> > +	ret = da9052_request_irq(rtc->da9052, rtc->irq, "ALM",
> > +				da9052_rtc_irq, rtc);
> >  	if (ret != 0) {
> >  		rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
> >  		return ret;
> 
> drivers/rtc/rtc-da9052.c was converted to use
> devm_request_threaded_irq() after linux-3.8, so I cannot apply this
> patch to mainline.  Can you please prepare a patch against 3.9-rc3?
Yes.
> 
> Do you believe that the patch should be backported into -stable
> kernels?  If so, Greg will need a different version of it - ie, the one
> you have just sent.  Please send that to him at the appropriate time
> (say, when you see me drop the 3.9-rc3 version from the -mm tree).
Ok, I will do the necessary.


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