From: Lionel Debieve <lionel.debieve@st.com>
Date: Fri, 28 Jun 2019 11:26:54 +0000 (+0200)
Subject: crypto: stm32/hash - Fix hmac issue more than 256 bytes
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0acabecebc912b3ba06289e4ef40476acc499a37;p=linux.git

crypto: stm32/hash - Fix hmac issue more than 256 bytes

Correct condition for the second hmac loop. Key must be only
set in the first loop. Initial condition was wrong,
HMAC_KEY flag was not properly checked.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index bfc49e67124bb..573ff3fad054e 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -363,7 +363,7 @@ static int stm32_hash_xmit_cpu(struct stm32_hash_dev *hdev,
 		return -ETIMEDOUT;
 
 	if ((hdev->flags & HASH_FLAGS_HMAC) &&
-	    (hdev->flags & ~HASH_FLAGS_HMAC_KEY)) {
+	    (!(hdev->flags & HASH_FLAGS_HMAC_KEY))) {
 		hdev->flags |= HASH_FLAGS_HMAC_KEY;
 		stm32_hash_write_key(hdev);
 		if (stm32_hash_wait_busy(hdev))