From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: [PATCH 4/4] RDMA/cxgb4: Add timeouts when waiting for FW responses. Date: Fri, 23 Jul 2010 14:12:43 -0500 Message-ID: <20100723191242.15832.77852.stgit@build.ogc.int> References: <20100723191221.15832.79704.stgit@build.ogc.int> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100723191221.15832.79704.stgit-T4OLL4TyM9aNDNWfRnPdfg@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org Don't hang a host thread if the FW stops responding. Signed-off-by: Steve Wise --- drivers/infiniband/hw/cxgb4/cm.c | 22 ++++++++++++++++++---- 1 files changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index bc3f9f0..296aa2c 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -2050,8 +2050,15 @@ int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) goto fail3; /* wait for pass_open_rpl */ - wait_event(ep->com.waitq, ep->com.rpl_done); - err = ep->com.rpl_err; + wait_event_timeout(ep->com.waitq, ep->com.rpl_done, C4IW_WR_TO); + if (ep->com.rpl_done) + err = ep->com.rpl_err; + else { + printk(KERN_ERR MOD "Device %s not responding!\n", + pci_name(ep->com.dev->rdev.lldi.pdev)); + ep->com.dev->rdev.flags = T4_FATAL_ERROR; + err = -EIO; + } if (!err) { cm_id->provider_data = ep; goto out; @@ -2080,10 +2087,17 @@ int c4iw_destroy_listen(struct iw_cm_id *cm_id) err = listen_stop(ep); if (err) goto done; - wait_event(ep->com.waitq, ep->com.rpl_done); + wait_event_timeout(ep->com.waitq, ep->com.rpl_done, C4IW_WR_TO); + if (ep->com.rpl_done) + err = ep->com.rpl_err; + else { + printk(KERN_ERR MOD "Device %s not responding!\n", + pci_name(ep->com.dev->rdev.lldi.pdev)); + ep->com.dev->rdev.flags = T4_FATAL_ERROR; + err = -EIO; + } cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); done: - err = ep->com.rpl_err; cm_id->rem_ref(cm_id); c4iw_put_ep(&ep->com); return err; -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html