Re: [PATCH] RTC: Add mmap method to rtc character driver

Neil Horman
2006-07-29T12:59:15Z

On Fri, Jul 28, 2006 at 09:28:20PM -0700, Bill Huey wrote:
> On Tue, Jul 25, 2006 at 05:39:01PM -0400, Jim Gettys wrote:
> > Keith's the expert (who wrote the smart scheduler): I'd take a wild ass
> > guess that 10ms is good enough.
> >
> > Maybe people can keep him on the cc list this time...
>
> Not to poop on people's parade, but the last time I looked /dev/rtc was
> a single instance device, right ? If this reasoning is true, then mplayer
> and other apps that want to open it can't.
>
> What's the story with this ?
>
Its always been the case. Its hardware can only support one timer (or at least
one timer period), and as such multiple users would interefere with each other.

Regards
Neil

> bill