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| author | Tobias Klauser <tklauser@distanz.ch> | 2016-11-08 16:40:28 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-09 21:15:00 -0500 |
| commit | de464375daf0d10f04fa5add2e889f42328d2ade (patch) | |
| tree | d2df5905bf6826732abf06f3eff99ae6244ff164 /kernel/bpf/verifier.c | |
| parent | f41cd11d64b2b21012eb4abffbe579bc0b90467f (diff) | |
| download | linux-de464375daf0d10f04fa5add2e889f42328d2ade.tar.bz2 | |
bpf: Remove unused but set variables
Remove the unused but set variables min_set and max_set in
adjust_reg_min_max_vals to fix the following warning when building with
'W=1':
kernel/bpf/verifier.c:1483:7: warning: variable ‘min_set’ set but not used [-Wunused-but-set-variable]
There is no warning about max_set being unused, but since it is only
used in the assignment of min_set it can be removed as well.
They were introduced in commit 484611357c19 ("bpf: allow access into map
value arrays") but seem to have never been used.
Cc: Josef Bacik <jbacik@fb.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 900257578934..89f787ca47ef 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -1499,7 +1499,6 @@ static void adjust_reg_min_max_vals(struct bpf_verifier_env *env, { struct bpf_reg_state *regs = env->cur_state.regs, *dst_reg; u64 min_val = BPF_REGISTER_MIN_RANGE, max_val = BPF_REGISTER_MAX_RANGE; - bool min_set = false, max_set = false; u8 opcode = BPF_OP(insn->code); dst_reg = ®s[insn->dst_reg]; @@ -1522,7 +1521,6 @@ static void adjust_reg_min_max_vals(struct bpf_verifier_env *env, } else if (insn->imm < BPF_REGISTER_MAX_RANGE && (s64)insn->imm > BPF_REGISTER_MIN_RANGE) { min_val = max_val = insn->imm; - min_set = max_set = true; } /* We don't know anything about what was done to this register, mark it |