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From: Colin King <colin.king@canonical.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>, KP Singh <kpsingh@kernel.org>,
	netdev@vger.kernel.org, bpf@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next] bpf: devmap: remove redundant assignment of variable drops
Date: Thu, 27 May 2021 15:36:37 +0100	[thread overview]
Message-ID: <20210527143637.795393-1-colin.king@canonical.com> (raw)

From: Colin Ian King <colin.king@canonical.com>

The variable drops is being assigned a value that is never
read, it is being updated later on. The assignment is redundant and
can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 kernel/bpf/devmap.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index f9148daab0e3..fe3873b5d13d 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -388,8 +388,6 @@ static void bq_xmit_all(struct xdp_dev_bulk_queue *bq, u32 flags)
 		to_send = dev_map_bpf_prog_run(bq->xdp_prog, bq->q, cnt, dev);
 		if (!to_send)
 			goto out;
-
-		drops = cnt - to_send;
 	}
 
 	sent = dev->netdev_ops->ndo_xdp_xmit(dev, to_send, bq->q, flags);
-- 
2.31.1


             reply	other threads:[~2021-05-27 14:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27 14:36 Colin King [this message]
2021-05-27 14:55 ` [PATCH][next] bpf: devmap: remove redundant assignment of variable drops Maciej Fijalkowski
2021-05-28 20:21   ` Daniel Borkmann

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