From a5f4a07820ebc60b21c984d893f48402c4b4a4a2 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Fri, 23 Jul 2010 19:12:43 +0000 Subject: [PATCH] RDMA/cxgb4: Add timeouts when waiting for FW responses Don't hang a host thread if the FW stops responding. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/cm.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 3eff5df6d40f..6c40779b62f4 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;