X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=crypto%2Fpcbc.c;h=67009a532201732b0dc86f9b5949a2b454b5384c;hb=HEAD;hp=d9e45a9587201d7760084bd81a024c11d743dc75;hpb=ae46654bcff303b33facbbd04a3ad9c21d303f9b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

diff --git a/crypto/pcbc.c b/crypto/pcbc.c
index d9e45a958720..67009a532201 100644
--- a/crypto/pcbc.c
+++ b/crypto/pcbc.c
@@ -50,7 +50,7 @@ static int crypto_pcbc_encrypt_segment(struct skcipher_request *req,
 	unsigned int nbytes = walk->nbytes;
 	u8 *src = walk->src.virt.addr;
 	u8 *dst = walk->dst.virt.addr;
-	u8 *iv = walk->iv;
+	u8 * const iv = walk->iv;
 
 	do {
 		crypto_xor(iv, src, bsize);
@@ -71,7 +71,7 @@ static int crypto_pcbc_encrypt_inplace(struct skcipher_request *req,
 	int bsize = crypto_cipher_blocksize(tfm);
 	unsigned int nbytes = walk->nbytes;
 	u8 *src = walk->src.virt.addr;
-	u8 *iv = walk->iv;
+	u8 * const iv = walk->iv;
 	u8 tmpbuf[bsize];
 
 	do {
@@ -83,8 +83,6 @@ static int crypto_pcbc_encrypt_inplace(struct skcipher_request *req,
 		src += bsize;
 	} while ((nbytes -= bsize) >= bsize);
 
-	memcpy(walk->iv, iv, bsize);
-
 	return nbytes;
 }
 
@@ -120,7 +118,7 @@ static int crypto_pcbc_decrypt_segment(struct skcipher_request *req,
 	unsigned int nbytes = walk->nbytes;
 	u8 *src = walk->src.virt.addr;
 	u8 *dst = walk->dst.virt.addr;
-	u8 *iv = walk->iv;
+	u8 * const iv = walk->iv;
 
 	do {
 		crypto_cipher_decrypt_one(tfm, dst, src);
@@ -131,8 +129,6 @@ static int crypto_pcbc_decrypt_segment(struct skcipher_request *req,
 		dst += bsize;
 	} while ((nbytes -= bsize) >= bsize);
 
-	memcpy(walk->iv, iv, bsize);
-
 	return nbytes;
 }
 
@@ -143,7 +139,7 @@ static int crypto_pcbc_decrypt_inplace(struct skcipher_request *req,
 	int bsize = crypto_cipher_blocksize(tfm);
 	unsigned int nbytes = walk->nbytes;
 	u8 *src = walk->src.virt.addr;
-	u8 *iv = walk->iv;
+	u8 * const iv = walk->iv;
 	u8 tmpbuf[bsize] __aligned(__alignof__(u32));
 
 	do {
@@ -155,8 +151,6 @@ static int crypto_pcbc_decrypt_inplace(struct skcipher_request *req,
 		src += bsize;
 	} while ((nbytes -= bsize) >= bsize);
 
-	memcpy(walk->iv, iv, bsize);
-
 	return nbytes;
 }