On Tue, 27 Jun 2006, Franck Bui-Huu wrote:
> Franck Bui-Huu wrote:
> > +
> > + if (wait_for_completion_interruptible_timeout(
> > + &done, timeout ? : MAX_SCHEDULE_TIMEOUT) <= 0) {
>
> oops, timeout is in ms, and should be converted in jiffies...BTW why not
> simply always using jiffies ? timeout value are usually > 1s so it's pretty
> easy for device driver to write "2*HZ" for a 2 second timout.
You're asking the wrong question. The real question is "Why ever use
jiffies?"
Jiffy values don't mean anything outside a running system. They aren't
portable at all. But seconds, milliseconds, microseconds, and so on all
have very well-defined meanings.
It's only because of historical inertia that jiffies are still used
anywhere.
Alan Stern
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