Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   YueHaibing <yuehaibing@huawei.com>
To:     <ast@kernel.org>, <daniel@iogearbox.net>, <kafai@fb.com>,
        <songliubraving@fb.com>, <yhs@fb.com>, <andriin@fb.com>,
        <brianvv@google.com>
CC:     <netdev@vger.kernel.org>, <bpf@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, YueHaibing <yuehaibing@huawei.com>
Subject: [PATCH bpf-next] bpf: Remove set but not used variable 'first_key'
Date:   Thu, 16 Jan 2020 22:53:00 +0800
Message-ID: <20200116145300.59056-1-yuehaibing@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

kernel/bpf/syscall.c: In function generic_map_lookup_batch:
kernel/bpf/syscall.c:1339:7: warning: variable first_key set but not used [-Wunused-but-set-variable]

It is never used, so remove it.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
 kernel/bpf/syscall.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 0d94d36..c26a714 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1336,7 +1336,6 @@ int generic_map_lookup_batch(struct bpf_map *map,
 	void *buf, *buf_prevkey, *prev_key, *key, *value;
 	int err, retry = MAP_LOOKUP_RETRIES;
 	u32 value_size, cp, max_count;
-	bool first_key = false;
 
 	if (attr->batch.elem_flags & ~BPF_F_LOCK)
 		return -EINVAL;
@@ -1365,7 +1364,6 @@ int generic_map_lookup_batch(struct bpf_map *map,
 	}
 
 	err = -EFAULT;
-	first_key = false;
 	prev_key = NULL;
 	if (ubatch && copy_from_user(buf_prevkey, ubatch, map->key_size))
 		goto free_buf;
-- 
2.7.4