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From:   Harshvardhan Jha <harshvardhan.jha@oracle.com>
To:     aelior@marvell.com
Cc:     GR-everest-linux-l2@marvell.com, davem@davemloft.net,
        kuba@kernel.org, ast@kernel.org, daniel@iogearbox.net,
        hawk@kernel.org, john.fastabend@gmail.com, andrii@kernel.org,
        kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
        kpsingh@kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
        Harshvardhan Jha <harshvardhan.jha@oracle.com>
Subject: [PATCH net] net: qede: Fix end of loop tests for list_for_each_entry
Date:   Sun, 25 Jul 2021 23:28:04 +0530
Message-Id: <20210725175803.60559-1-harshvardhan.jha@oracle.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The list_for_each_entry() iterator, "vlan" in this code, can never be
NULL so the warning will never be printed.

Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
---
From static analysis.  Not tested.
---
 drivers/net/ethernet/qlogic/qede/qede_filter.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index c59b72c90293..a2e4dfb5cb44 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -831,7 +831,7 @@ int qede_configure_vlan_filters(struct qede_dev *edev)
 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 {
 	struct qede_dev *edev = netdev_priv(dev);
-	struct qede_vlan *vlan = NULL;
+	struct qede_vlan *vlan;
 	int rc = 0;
 
 	DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
@@ -842,7 +842,7 @@ int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 		if (vlan->vid == vid)
 			break;
 
-	if (!vlan || (vlan->vid != vid)) {
+	if (list_entry_is_head(vlan, &edev->vlan_list, list)) {
 		DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
 			   "Vlan isn't configured\n");
 		goto out;
-- 
2.32.0