netdev - [PATCH net-next 05/10] qede: Initialize lock and slowpath workqueue early

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Message-ID: <1487623419-6442-6-git-send-email-Yuval.Mintz@cavium.com>
Date:   Mon, 20 Feb 2017 22:43:34 +0200
From:   Yuval Mintz <Yuval.Mintz@...ium.com>
To:     <davem@...emloft.net>, <netdev@...r.kernel.org>
CC:     Yuval Mintz <Yuval.Mintz@...ium.com>
Subject: [PATCH net-next 05/10] qede: Initialize lock and slowpath workqueue early

Need to make sure the slowpath workqueue and the qede lock
are ready for the registration of the netdevice, as once
registered there's no guarantee those wouldn't be used.

Signed-off-by: Yuval Mintz <Yuval.Mintz@...ium.com>
---
 drivers/net/ethernet/qlogic/qede/qede_main.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index d163e72..7a8e07d 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -854,6 +854,13 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 	if (rc)
 		goto err3;
 
+	/* Prepare the lock prior to the registeration of the netdev,
+	 * as once it's registered we might reach flows requiring it
+	 * [it's even possible to reach a flow needing it directly
+	 * from there, although it's unlikely].
+	 */
+	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
+	mutex_init(&edev->qede_lock);
 	rc = register_netdev(edev->ndev);
 	if (rc) {
 		DP_NOTICE(edev, "Cannot register net-device\n");
@@ -878,8 +885,6 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 		qede_set_dcbnl_ops(edev->ndev);
 #endif
 
-	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
-	mutex_init(&edev->qede_lock);
 	edev->rx_copybreak = QEDE_RX_HDR_SIZE;
 
 	DP_INFO(edev, "Ending successfully qede probe\n");
-- 
1.9.3