OK, why does this line occasionally return true:

	if ((maple_dev->interval > 0) && (jiffies >maple_dev->when))

while this one never does (no other changes made):

if  ((maple_dev->interval > 0) && (time_after(jiffies, maple_dev->when)))


Is this a gcc issue or what?
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Is maple_dev->when an unsigned long?

Rene.
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Yes. Does that make a difference?
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If it had been a signed type, it could've wrapped to something you didn't 
expect, explaining the difference at least...

With an unsigned long, the only diference should be that time_after() deals 
with jiffie wrapping which I assume is not an actual problem here. I'll 
retreat into the shades again... ;-(

Rene.

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What exactly is "occassionally"?  Does it happen more than once per
boot? If not, and it happens after a certain time after booting, it

If "occasionally" is limited to once per boot, it might be jiffie
wrapping. IIRC jiffies are initialized so that they wrap after about 5
minutes of uptime to reveal such bugs without forcing you to wait for
ages just to have the counter wrap for the first time.

Bj
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On 12/09/2007, Bj
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On 2007.09.12 00:10:19 +0100, Adrian McMenamin wrote:
> On 12/09/2007, Bj
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On 12/09/2007, Bj
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On 09/12/2007 01:09 AM, Bj
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