diff options
| author | Breno Leitao <leitao@linux.vnet.ibm.com> | 2010-10-05 13:16:22 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-05 20:10:32 -0700 |
| commit | 5b27d42755fa6536a89f32b107fb2a53267696c2 (patch) | |
| tree | a626834a26e639f0f210a735200c46ed113723e0 /drivers/net/ehea | |
| parent | 9ed51657f6ea2a08582d6a9be5404b044972b7e0 (diff) | |
| download | lwn-5b27d42755fa6536a89f32b107fb2a53267696c2.tar.gz lwn-5b27d42755fa6536a89f32b107fb2a53267696c2.zip | |
ehea: using wait queues instead of msleep on ehea_flush_sq
This patch just remove a msleep loop and change to wait queue,
making the code cleaner.
Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ehea')
| -rw-r--r-- | drivers/net/ehea/ehea.h | 1 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 19 |
2 files changed, 13 insertions, 7 deletions
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h index 1846623c6ae6..5bae7daf40fb 100644 --- a/drivers/net/ehea/ehea.h +++ b/drivers/net/ehea/ehea.h @@ -491,6 +491,7 @@ struct ehea_port { u8 full_duplex; u8 autoneg; u8 num_def_qps; + wait_queue_head_t swqe_avail_wq; }; struct port_res_cfg { diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index 190fb691d20b..7897bdf76e66 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -888,6 +888,7 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota) pr->queue_stopped = 0; } spin_unlock_irqrestore(&pr->netif_queue, flags); + wake_up(&pr->port->swqe_avail_wq); return cqe; } @@ -2652,6 +2653,8 @@ static int ehea_open(struct net_device *dev) netif_start_queue(dev); } + init_waitqueue_head(&port->swqe_avail_wq); + mutex_unlock(&port->port_lock); return ret; @@ -2724,13 +2727,15 @@ static void ehea_flush_sq(struct ehea_port *port) for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) { struct ehea_port_res *pr = &port->port_res[i]; int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count; - int k = 0; - while (atomic_read(&pr->swqe_avail) < swqe_max) { - msleep(5); - if (++k == 20) { - ehea_error("WARNING: sq not flushed completely"); - break; - } + int ret; + + ret = wait_event_timeout(port->swqe_avail_wq, + atomic_read(&pr->swqe_avail) >= swqe_max, + msecs_to_jiffies(100)); + + if (!ret) { + ehea_error("WARNING: sq not flushed completely"); + break; } } } |