netdev - [PATCH net-next 2/8] net/mlx5e: Wait for RX buffers initialization in a more proper manner

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Date:	Sun,  1 Nov 2015 19:35:16 +0200
From:	Or Gerlitz <ogerlitz@...lanox.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Saeed Mahameed <saeedm@...lanox.com>,
	Achiad Shochat <achiad@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: [PATCH net-next 2/8] net/mlx5e: Wait for RX buffers initialization in a more proper manner

From: Achiad Shochat <achiad@...lanox.com>

Use jiffies rather than wait loop with msleep().

The wait loop didn't take into consideration time when the
process was not executing.

Signed-off-by: Achiad Shochat <achiad@...lanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 9df6f9a..0bab33c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -442,12 +442,12 @@ static void mlx5e_disable_rq(struct mlx5e_rq *rq)
 
 static int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq)
 {
+	unsigned long exp_time = jiffies + msecs_to_jiffies(20000);
 	struct mlx5e_channel *c = rq->channel;
 	struct mlx5e_priv *priv = c->priv;
 	struct mlx5_wq_ll *wq = &rq->wq;
-	int i;
 
-	for (i = 0; i < 1000; i++) {
+	while (time_before(jiffies, exp_time)) {
 		if (wq->cur_sz >= priv->params.min_rx_wqes)
 			return 0;
 
-- 
2.3.7

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