[PATCH 15/16] crypto: atmel-aes - Use gcm helper to check authsize

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From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>

Use core helper functions.

Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
---
 drivers/crypto/atmel-aes.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 60f54580d646..18802c977291 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -1790,21 +1790,7 @@ static int atmel_aes_gcm_setkey(struct crypto_aead *tfm, const u8 *key,
 static int atmel_aes_gcm_setauthsize(struct crypto_aead *tfm,
 				     unsigned int authsize)
 {
-	/* Same as crypto_gcm_authsize() from crypto/gcm.c */
-	switch (authsize) {
-	case 4:
-	case 8:
-	case 12:
-	case 13:
-	case 14:
-	case 15:
-	case 16:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
+	return crypto_gcm_check_authsize(authsize);
 }
 
 static int atmel_aes_gcm_encrypt(struct aead_request *req)
-- 
2.14.5





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