From 3ce071300954eda35bf30057386326ac5c4391db Mon Sep 17 00:00:00 2001
From: Jinliang Li <ljl150821@alibaba-inc.com>
Date: Thu, 28 Apr 2022 14:04:34 +0800
Subject: [PATCH] mbedtls: fix whitescan bug in library/cipher.c

[Detail]
Remove dead code in library/cipher.c
CWE561: Code can never be reached because of a logical contradiction

[Verified Cases]
Build Pass: <py_engine_demo>
Test Pass:  <py_engine_demo>

Signed-off-by: Jinliang Li <ljl150821@alibaba-inc.com>
---
 components/mbedtls/library/cipher.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/components/mbedtls/library/cipher.c b/components/mbedtls/library/cipher.c
index 273997577b..4367b88ff7 100644
--- a/components/mbedtls/library/cipher.c
+++ b/components/mbedtls/library/cipher.c
@@ -459,11 +459,6 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
          */
         if( 0 != ilen )
         {
-            if( 0 == block_size )
-            {
-                return( MBEDTLS_ERR_CIPHER_INVALID_CONTEXT );
-            }
-
             /* Encryption: only cache partial blocks
              * Decryption w/ padding: always keep at least one whole block
              * Decryption w/o padding: only cache partial blocks
-- 
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