tree a6ba76eedc0b570314be5be71017575ec91e74cd
parent 788252e6616afc75098397cc6b0bcb5482ad07ac
author Herbert Xu <herbert@gondor.apana.org.au> 1147213674 -0700
committer David S. Miller <davem@davemloft.net> 1147213674 -0700

[NET] linkwatch: Handle jiffies wrap-around

The test used in the linkwatch does not handle wrap-arounds correctly.
Since the intention of the code is to eliminate bursts of messages we
can afford to delay things up to a second.  Using that fact we can
easily handle wrap-arounds by making sure that we don't delay things
by more than one second.

This is based on diagnosis and a patch by Stefan Rompf.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Stefan Rompf <stefan@loplof.de>
Signed-off-by: David S. Miller <davem@davemloft.net>