linux-kernel - Re: [PATCH] PCAP RTC driver (for 2.6.32).

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Date:	Fri, 26 Jun 2009 13:33:34 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Daniel Ribeiro <drwyrm@...il.com>, a.zummo@...ertech.it,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	openezx-devel@...ts.openezx.org, sameo@...ux.intel.com
Subject: Re: [PATCH] PCAP RTC driver (for 2.6.32).

On Fri, 2009-06-26 at 13:23 -0700, Andrew Morton wrote:
> > diff -puN /dev/null drivers/rtc/rtc-pcap.c
> > --- /dev/null
> > +++ a/drivers/rtc/rtc-pcap.c
[]
> > +static irqreturn_t pcap_rtc_irq(int irq, void *_pcap_rtc)
> > +{
> > +	struct pcap_rtc *pcap_rtc = _pcap_rtc;
> > +	unsigned long rtc_events = 0;
> > +
> > +	if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ))
> > +		rtc_events |= RTC_IRQF | RTC_UF;
> > +	else if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA))
> > +		rtc_events |= RTC_IRQF | RTC_AF;
> > +
> > +	rtc_update_irq(pcap_rtc->rtc, 1, rtc_events);
> > +	return IRQ_HANDLED;
> > +}
> 
> This could be coded more simply:
> 
> 	unsigned long rtc_events;
> 
> 	if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ))
> 		rtc_events = RTC_IRQF | RTC_UF;
> 	else if (irq == pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA))
> 		rtc_events = RTC_IRQF | RTC_AF;

else
	rec_events = 0;

> > +     rtc_update_irq(pcap_rtc->rtc, 1, rtc_events);
> > +     return IRQ_HANDLED;

Does that buy any clarity?


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