RDMA/cma: Fix synchronization with device removal in cma_iw_handler
The cma_iw_handler needs to validate the state of the rdma_cm_id before processing a new connection request to ensure that a device removal is not already being processed for the same rdma_cm_id. Without the state check, the user can receive simultaneous callbacks for the same cm_id, or a callback after they've destroyed the cm_id. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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