linux-kernel - [PATCH -next] bpf: simplify code in btf_parse

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Message-Id: <20220917084248.3649-1-williamsukatube@163.com>
Date:   Sat, 17 Sep 2022 16:42:48 +0800
From:   williamsukatube@....com
To:     martin.lau@...ux.dev, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        song@...nel.org, yhs@...com, john.fastabend@...il.com,
        kpsingh@...nel.org, sdf@...gle.com, haoluo@...gle.com,
        jolsa@...nel.org, William Dean <williamsukatube@....com>
Subject: [PATCH -next] bpf: simplify code in btf_parse_hdr

From: William Dean <williamsukatube@....com>

It could directly return 'btf_check_sec_info' to simplify code.

Signed-off-by: William Dean <williamsukatube@....com>
---
 kernel/bpf/btf.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 7e64447659f3..80eda86ddfce 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -4854,7 +4854,6 @@ static int btf_parse_hdr(struct btf_verifier_env *env)
 	u32 hdr_len, hdr_copy, btf_data_size;
 	const struct btf_header *hdr;
 	struct btf *btf;
-	int err;

 	btf = env->btf;
 	btf_data_size = btf->data_size;
@@ -4911,11 +4910,7 @@ static int btf_parse_hdr(struct btf_verifier_env *env)
 		return -EINVAL;
 	}

-	err = btf_check_sec_info(env, btf_data_size);
-	if (err)
-		return err;
-
-	return 0;
+	return btf_check_sec_info(env, btf_data_size);
 }

 static int btf_check_type_tags(struct btf_verifier_env *env,
--
2.25.1