[IB] umad: further ib_unregister_mad_agent() deadlock fixes

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The previous umad deadlock fix left ib_umad_kill_port() still
vulnerable to deadlocking.  This patch fixes that by downgrading our
lock to a read lock when we might end up trying to reacquire the lock
for reading.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

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This commit is contained in:

Roland Dreier 2005-11-10 10:18:23 -08:00

parent ae57e24a40

commit 94382f3562

1 changed files with 63 additions and 24 deletions

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87

drivers/infiniband/core/user_mad.c

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