linux-kernel - [PATCH] net: hns3: avoid -Wpointer-bool-conversion warning

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Message-Id: <20210204153813.1520736-1-arnd@kernel.org>
Date:   Thu,  4 Feb 2021 16:38:06 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Huazhong Tan <tanhuazhong@...wei.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Yufeng Mo <moyufeng@...wei.com>,
        Jian Shen <shenjian15@...wei.com>,
        Yonglong Liu <liuyonglong@...wei.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: [PATCH] net: hns3: avoid -Wpointer-bool-conversion warning

From: Arnd Bergmann <arnd@...db.de>

clang points out a redundant sanity check:

drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c:497:28: error: address of array 'filp->f_path.dentry->d_iname' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]

This can never fail, so just remove the check.

Fixes: 04987ca1b9b6 ("net: hns3: add debugfs support for tm nodes, priority and qset info")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 6978304f1ac5..c5958754f939 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -494,9 +494,6 @@ static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
 	ssize_t size = 0;
 	int ret = 0;
 
-	if (!filp->f_path.dentry->d_iname)
-		return -EINVAL;
-
 	read_buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL);
 	if (!read_buf)
 		return -ENOMEM;
-- 
2.29.2