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From: Yevhen Orlov <yevhen.orlov@plvision.eu>
To: netdev@vger.kernel.org
Cc: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>,
	Taras Chornyi <taras.chornyi@plvision.eu>,
	Mickey Rachamim <mickeyr@marvell.com>,
	Serhiy Pshyk <serhiy.pshyk@plvision.eu>,
	Yevhen Orlov <yevhen.orlov@plvision.eu>,
	Taras Chornyi <tchornyi@marvell.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Andrii Savka <andrii.savka@plvision.eu>,
	Oleksandr Mazur <oleksandr.mazur@plvision.eu>,
	linux-kernel@vger.kernel.org
Subject: [PATCH net] net: marvell: prestera: fix incorrect return of port_find
Date: Thu, 16 Dec 2021 19:07:36 +0200	[thread overview]
Message-ID: <20211216170736.8851-1-yevhen.orlov@plvision.eu> (raw)

In case, when some ports is in list and we don't find requested - we
return last iterator state and not return NULL as expected.

Fixes: 501ef3066c89 ("net: marvell: prestera: Add driver for Prestera family ASIC devices")
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
---
 .../ethernet/marvell/prestera/prestera_main.c    | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index a0dbad5cb88d..2a5029fe5c77 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
@@ -55,12 +55,14 @@ int prestera_port_pvid_set(struct prestera_port *port, u16 vid)
 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
 						 u32 dev_id, u32 hw_id)
 {
-	struct prestera_port *port = NULL;
+	struct prestera_port *port = NULL, *tmp;
 
 	read_lock(&sw->port_list_lock);
-	list_for_each_entry(port, &sw->port_list, list) {
-		if (port->dev_id == dev_id && port->hw_id == hw_id)
+	list_for_each_entry(tmp, &sw->port_list, list) {
+		if (tmp->dev_id == dev_id && tmp->hw_id == hw_id) {
+			port = tmp;
 			break;
+		}
 	}
 	read_unlock(&sw->port_list_lock);
 
@@ -69,12 +71,14 @@ struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
 
 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id)
 {
-	struct prestera_port *port = NULL;
+	struct prestera_port *port = NULL, *tmp;
 
 	read_lock(&sw->port_list_lock);
-	list_for_each_entry(port, &sw->port_list, list) {
-		if (port->id == id)
+	list_for_each_entry(tmp, &sw->port_list, list) {
+		if (tmp->id == id) {
+			port = tmp;
 			break;
+		}
 	}
 	read_unlock(&sw->port_list_lock);
 
-- 
2.17.1


             reply	other threads:[~2021-12-16 17:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-16 17:07 Yevhen Orlov [this message]
2021-12-18  3:30 ` [PATCH net] net: marvell: prestera: fix incorrect return of port_find patchwork-bot+netdevbpf

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