nfc: s3fwrn5: use crypto_shash_tfm_digest()

Instead of manually allocating a 'struct shash_desc' on the stack and
calling crypto_shash_digest(), switch to using the new helper function
crypto_shash_tfm_digest() which does this for us.

Cc: Robert Baldyga <r.baldyga@samsung.com>
Cc: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/nfc/s3fwrn5/firmware.c b/drivers/nfc/s3fwrn5/firmware.c
index de613c6..69857f0 100644 (file)
--- a/drivers/nfc/s3fwrn5/firmware.c
+++ b/drivers/nfc/s3fwrn5/firmware.c
@@ -434,15 +434,7 @@ int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
                goto out;
        }
 
-       {
-               SHASH_DESC_ON_STACK(desc, tfm);
-
-               desc->tfm = tfm;
-
-               ret = crypto_shash_digest(desc, fw->image, image_size,
-                                         hash_data);
-               shash_desc_zero(desc);
-       }
+       ret = crypto_shash_tfm_digest(tfm, fw->image, image_size, hash_data);
 
        crypto_free_shash(tfm);
        if (ret) {