From e82153b54d75af31d5d4a84efe441e5719f34cfc Mon Sep 17 00:00:00 2001 From: Krishna Kumar Date: Mon, 16 Oct 2006 10:09:01 +0530 Subject: [PATCH] RDMA/cma: Optimize cma_bind_loopback() to check for empty list Optimize to test for an empty list first. This ends up simplifying the code too. Signed-off-by: Krishna Kumar Acked-by: Sean Hefty Signed-off-by: Roland Dreier --- drivers/infiniband/core/cma.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 845090b0859c..4975d8154a78 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1481,19 +1481,18 @@ static int cma_bind_loopback(struct rdma_id_private *id_priv) u8 p; mutex_lock(&lock); - list_for_each_entry(cma_dev, &dev_list, list) - for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) - if (!ib_query_port (cma_dev->device, p, &port_attr) && - port_attr.state == IB_PORT_ACTIVE) - goto port_found; - - if (!list_empty(&dev_list)) { - p = 1; - cma_dev = list_entry(dev_list.next, struct cma_device, list); - } else { + if (list_empty(&dev_list)) { ret = -ENODEV; goto out; } + list_for_each_entry(cma_dev, &dev_list, list) + for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) + if (!ib_query_port(cma_dev->device, p, &port_attr) && + port_attr.state == IB_PORT_ACTIVE) + goto port_found; + + p = 1; + cma_dev = list_entry(dev_list.next, struct cma_device, list); port_found: ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid);