linux-kernel - [PATCH -next] net: prestera: acl: fix return value check in prestera_acl_rule_entry

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Message-ID: <20211203070418.465144-1-yangyingliang@huawei.com>
Date:   Fri, 3 Dec 2021 15:04:18 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     <tchornyi@...vell.com>, <vmytnyk@...vell.com>,
        <davem@...emloft.net>, <kuba@...nel.org>
Subject: [PATCH -next] net: prestera: acl: fix return value check in prestera_acl_rule_entry_find()

rhashtable_lookup_fast() returns NULL pointer not ERR_PTR().
Return rhashtable_lookup_fast() directly to fix this.

Fixes: 47327e198d42 ("net: prestera: acl: migrate to new vTCAM api")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/net/ethernet/marvell/prestera/prestera_acl.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_acl.c b/drivers/net/ethernet/marvell/prestera/prestera_acl.c
index da0b6525ef9a..fc7f2fedafd7 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_acl.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_acl.c
@@ -419,11 +419,8 @@ struct prestera_acl_rule_entry *
 prestera_acl_rule_entry_find(struct prestera_acl *acl,
 			     struct prestera_acl_rule_entry_key *key)
 {
-	struct prestera_acl_rule_entry *e;
-
-	e = rhashtable_lookup_fast(&acl->acl_rule_entry_ht, key,
-				   __prestera_acl_rule_entry_ht_params);
-	return IS_ERR(e) ? NULL : e;
+	return rhashtable_lookup_fast(&acl->acl_rule_entry_ht, key,
+				      __prestera_acl_rule_entry_ht_params);
 }
 
 static int __prestera_acl_rule_entry2hw_del(struct prestera_switch *sw,
-- 
2.25.1