From: Steve Wise Date: Wed, 7 Oct 2009 22:38:12 +0000 (-0700) Subject: RDMA/iwcm: Don't call provider reject func with irqs disabled X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=54e05f15ccb510c0fb3b03dfe9186811021fd5ad;p=openwrt%2Fstaging%2Fblogic.git RDMA/iwcm: Don't call provider reject func with irqs disabled In commit cb58160e ("RDMA/iwcm: Reject the connection when the cm_id is destroyed") a call to the provider's reject handler was added to destroy_cm_id() to fix a provider endpoint leak. This call needs to be done with interrupts enabled. So unlock and relock around this call. This is safe because: 1) the provider will do nothing with this endpoint until the iwcm either accepts or rejects. 2) the lock is only released after the iwcm state is changed, so an errant iwcm app that is destroying -and- rejecting the connection concurrently will get a failure on one of the calls. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c index 55d093a36ae4..625fec5a741c 100644 --- a/drivers/infiniband/core/iwcm.c +++ b/drivers/infiniband/core/iwcm.c @@ -362,7 +362,9 @@ static void destroy_cm_id(struct iw_cm_id *cm_id) * In either case, must tell the provider to reject. */ cm_id_priv->state = IW_CM_STATE_DESTROYING; + spin_unlock_irqrestore(&cm_id_priv->lock, flags); cm_id->device->iwcm->reject(cm_id, NULL, 0); + spin_lock_irqsave(&cm_id_priv->lock, flags); break; case IW_CM_STATE_CONN_SENT: case IW_CM_STATE_DESTROYING: