ehea: converting msleeps to waitqueue on check_sqs() function

Removing the msleep() call in check_sqs() function, and replacing by a wait queue.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 7 deletions

diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index 5bae7daf40f..1321cb6401c 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -492,6 +492,7 @@ struct ehea_port {
         u8 autoneg;
         u8 num_def_qps;
         wait_queue_head_t swqe_avail_wq;
+        wait_queue_head_t restart_wq;
 };
 
 struct port_res_cfg {
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 7897bdf76e6..15401af3010 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -786,6 +786,7 @@ static void reset_sq_restart_flag(struct ehea_port *port)
                 struct ehea_port_res *pr = &port->port_res[i];
                 pr->sq_restart_flag = 0;
         }
+        wake_up(&port->restart_wq);
 }
 
 static void check_sqs(struct ehea_port *port)
@@ -796,6 +797,7 @@ static void check_sqs(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 ret;
                 k = 0;
                 swqe = ehea_get_swqe(pr->qp, &swqe_index);
                 memset(swqe, 0, SWQE_HEADER_SIZE);
@@ -809,13 +811,14 @@ static void check_sqs(struct ehea_port *port)
 
                 ehea_post_swqe(pr->qp, swqe);
 
-                while (pr->sq_restart_flag == 0) {
-                        msleep(5);
-                        if (++k == 100) {
-                                ehea_error("HW/SW queues out of sync");
-                                ehea_schedule_port_reset(pr->port);
-                                return;
-                        }
+                ret = wait_event_timeout(port->restart_wq,
+                                         pr->sq_restart_flag == 0,
+                                         msecs_to_jiffies(100));
+
+                if (!ret) {
+                        ehea_error("HW/SW queues out of sync");
+                        ehea_schedule_port_reset(pr->port);
+                        return;
                 }
         }
 }
@@ -2654,6 +2657,7 @@ static int ehea_open(struct net_device *dev)
         }
 
         init_waitqueue_head(&port->swqe_avail_wq);
+        init_waitqueue_head(&port->restart_wq);
 
         mutex_unlock(&port->port_lock);