tree 52e500e426a6d4a77acdc68333c6dcae0bc342c8
parent 5163dc1a645bc9ed7984fa484f1a77378c166d23
author Jack Morgenstein <jackm@dev.mellanox.co.il> 1202912630 +0200
committer Roland Dreier <rolandd@cisco.com> 1203012906 -0800

IPoIB: On P_Key change event, reset state properly

In P_Key event handling, if the old P_Key is no longer available, the
driver must call ipoib_ib_dev_stop() -- just as it does when the P_Key
is still available (see procedure __ipoib_ib_dev_flush()).

When a P_Key becomes available, the driver will perform ipoib_open(),
which assumes that the QP is in RESET, the cm_id has been
destroyed/deleted, etc.  If ipoib_ib_dev_stop() is not called as
described above, then these assumptions will be false, and the attempt
to bring the interface up will fail.

Found by Mellanox QA.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>