From: YueHaibing <yuehaibing@huawei.com>
Date: Sat, 30 Mar 2019 01:43:16 +0000 (+0000)
Subject: crypto: ccp - Use kmemdup in ccp_copy_and_save_keypart()
X-Git-Tag: v5.2-rc1~177^2~136
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8316da02e3e07b0da9b2d812a619b5513c7f59d2;p=thirdparty%2Fkernel%2Flinux.git

crypto: ccp - Use kmemdup in ccp_copy_and_save_keypart()

Use kmemdup rather than duplicating its implementation

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/ccp/ccp-crypto-rsa.c b/drivers/crypto/ccp/ccp-crypto-rsa.c
index 0b8aab009e7b1..841acdffbc3ce 100644
--- a/drivers/crypto/ccp/ccp-crypto-rsa.c
+++ b/drivers/crypto/ccp/ccp-crypto-rsa.c
@@ -37,10 +37,9 @@ static inline int ccp_copy_and_save_keypart(u8 **kpbuf, unsigned int *kplen,
 		if (buf[nskip])
 			break;
 	*kplen = sz - nskip;
-	*kpbuf = kzalloc(*kplen, GFP_KERNEL);
+	*kpbuf = kmemdup(buf + nskip, *kplen, GFP_KERNEL);
 	if (!*kpbuf)
 		return -ENOMEM;
-	memcpy(*kpbuf, buf + nskip, *kplen);
 
 	return 0;
 }