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author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-07-30 17:03:38 -0700 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-31 02:28:15 -0700 |
commit | fcc5a03ac42564e9e255c1134dda47442289e466 (patch) | |
tree | 8be87d6dc1a58b8ccd27de930c17bc1c9c26bac9 /Documentation/arm/Samsung-S3C24XX | |
parent | aeed9e82cd258b9699eaa6568efefba9cc6d5f01 (diff) |
[NET]: Allow netdev REGISTER/CHANGENAME events to fail
This patch adds code to allow errors to be passed up from event
handlers of NETDEV_REGISTER and NETDEV_CHANGENAME. It also adds
the notifier_from_errno/notifier_to_errnor helpers to pass the
errno value up to the notifier caller.
If an error is detected when a device is registered, it causes
that operation to fail. A NETDEV_UNREGISTER will be sent to
all event handlers.
Similarly if NETDEV_CHANGENAME fails the original name is restored
and a new NETDEV_CHANGENAME event is sent.
As such all event handlers must be idempotent with respect to
these events.
When an event handler is registered NETDEV_REGISTER events are
sent for all devices currently registered. Should any of them
fail, we will send NETDEV_GOING_DOWN/NETDEV_DOWN/NETDEV_UNREGISTER
events to that handler for the devices which have already been
registered with it. The handler registration itself will fail.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/arm/Samsung-S3C24XX')
0 files changed, 0 insertions, 0 deletions