netdev - [PATCH net-next] net: lan966x: Fix return value check for vcap_get

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Message-ID: <20230817123726.1885512-1-ruanjinjie@huawei.com>
Date: Thu, 17 Aug 2023 20:37:26 +0800
From: Ruan Jinjie <ruanjinjie@...wei.com>
To: <netdev@...r.kernel.org>, <linux@...linux.org.uk>, Horatiu Vultur
	<horatiu.vultur@...rochip.com>, <UNGLinuxDriver@...rochip.com>, "David S.
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Richard Cochran
	<richardcochran@...il.com>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH net-next] net: lan966x: Fix return value check for vcap_get_rule()

Since vcap_get_rule() return NULL or ERR_PTR(), just check NULL
is not correct. So use IS_ERR_OR_NULL() to fix the issue.

Fixes: 72df3489fb10 ("net: lan966x: Add ptp trap rules")
Signed-off-by: Ruan Jinjie <ruanjinjie@...wei.com>
---
 drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
index 60bd0cff6677..0aa87ea6c324 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
@@ -59,7 +59,7 @@ static int lan966x_ptp_add_trap(struct lan966x_port *port,
 	int err;
 
 	vrule = vcap_get_rule(lan966x->vcap_ctrl, rule_id);
-	if (vrule) {
+	if (!IS_ERR_OR_NULL(vrule)) {
 		u32 value, mask;
 
 		/* Just modify the ingress port mask and exit */
@@ -106,7 +106,7 @@ static int lan966x_ptp_del_trap(struct lan966x_port *port,
 	int err;
 
 	vrule = vcap_get_rule(lan966x->vcap_ctrl, rule_id);
-	if (!vrule)
+	if (IS_ERR_OR_NULL(vrule))
 		return -EEXIST;
 
 	vcap_rule_get_key_u32(vrule, VCAP_KF_IF_IGR_PORT_MASK, &value, &mask);
-- 
2.34.1