linux-kernel - [PATCH] lib/asn1_encoder: Remove redundant assignment to ret

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Date:   Thu,  6 May 2021 18:18:19 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     nathan@...nel.org
Cc:     ndesaulniers@...gle.com, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH] lib/asn1_encoder: Remove redundant assignment to ret

Variable 'ret' is set to zero but this value is never read as it is
overwritten with a new value later on, hence it is a redundant
assignment and can be removed.

Clean up the following clang-analyzer warning:

lib/asn1_encoder.c:167:2: warning: Value stored to 'ret' is never read
[clang-analyzer-deadcode.DeadStores]

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---
 lib/asn1_encoder.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/lib/asn1_encoder.c b/lib/asn1_encoder.c
index 41e71aa..0d287ea 100644
--- a/lib/asn1_encoder.c
+++ b/lib/asn1_encoder.c
@@ -164,8 +164,6 @@ static int asn1_encode_oid_digit(unsigned char **_data, int *data_len, u32 oid)
 
 	data_len -= 3;
 
-	ret = 0;
-
 	for (i = 2; i < oid_len; i++) {
 		ret = asn1_encode_oid_digit(&d, &data_len, oid[i]);
 		if (ret < 0)
-- 
1.8.3.1