linux-kernel - [PATCH][bpf-next] bpf: remove redundant variable old

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Date:   Wed, 11 Oct 2017 11:56:23 +0100
From:   Colin King <colin.king@...onical.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][bpf-next] bpf: remove redundant variable old_flags

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

Variable old_flags is being assigned but is never read; it is redundant
and can be removed.

Cleans up clang warning: Value stored to 'old_flags' is never read

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 kernel/bpf/cgroup.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index e88abc0865d5..3db5a17fcfe8 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -192,7 +192,6 @@ int __cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
 	struct cgroup_subsys_state *css;
 	struct bpf_prog_list *pl;
 	bool pl_was_allocated;
-	u32 old_flags;
 	int err;
 
 	if ((flags & BPF_F_ALLOW_OVERRIDE) && (flags & BPF_F_ALLOW_MULTI))
@@ -239,7 +238,6 @@ int __cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
 		pl->prog = prog;
 	}
 
-	old_flags = cgrp->bpf.flags[type];
 	cgrp->bpf.flags[type] = flags;
 
 	/* allocate and recompute effective prog arrays */
-- 
2.14.1