From 5b27d42755fa6536a89f32b107fb2a53267696c2 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Tue, 5 Oct 2010 13:16:22 +0000 Subject: [PATCH] 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 Acked-by: David Howells Signed-off-by: David S. Miller --- drivers/net/ehea/ehea.h | 1 + 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; } } } -- GitLab