linux-kernel - Re: [patch 2.6.19-rc6 6/6] rtc-omap driver

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Message-Id: <200611211815.43929.david-b@pacbell.net>
Date:	Tue, 21 Nov 2006 18:15:42 -0800
From:	David Brownell <david-b@...bell.net>
To:	Andrew Morton <akpm@...l.org>
Cc:	Alessandro Zummo <alessandro.zummo@...ertech.it>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>
Subject: Re: [patch 2.6.19-rc6 6/6] rtc-omap driver

On Tuesday 21 November 2006 5:19 pm, Andrew Morton wrote:
> On Mon, 20 Nov 2006 10:28:48 -0800

> > +		/* sometimes the alarm wraps into tomorrow */
> > +		if (then < now) {
> 
> This isn't wraparound-safe.  If you have then=0xffffffff and now=0x00000001.
> 
> Perhaps that can't happen.

Starting in 2037 or whenever, various things will be breaking...

Probably the RTC lib routines should use a time_t, and when that gets
changed to 64 bits then things like this will be fixed automagically.
Right now they use "unsigned long".

I suggest Alessandro handle those issues.


> > +MODULE_AUTHOR("George G. Davis (and others)");
> 
> Maybe some additional signoffs would be appropirate?

I pinged the MontaVista emails from the original driver; maybe
they'll send signoffs.

- Dave
 
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