nfc: s3fwrn5: Use shash

This patch replaces uses of the long obsolete hash interface with
shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 27 insertions, 9 deletions

diff --git a/drivers/nfc/s3fwrn5/firmware.c b/drivers/nfc/s3fwrn5/firmware.c
index 64a90252c57f..5f97da1947e3 100644
--- a/drivers/nfc/s3fwrn5/firmware.c
+++ b/drivers/nfc/s3fwrn5/firmware.c
@@ -19,7 +19,7 @@
 
 #include <linux/completion.h>
 #include <linux/firmware.h>
-#include <linux/crypto.h>
+#include <crypto/hash.h>
 #include <crypto/sha.h>
 
 #include "s3fwrn5.h"
@@ -429,8 +429,7 @@ int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
 {
         struct s3fwrn5_fw_image *fw = &fw_info->fw;
         u8 hash_data[SHA1_DIGEST_SIZE];
-        struct scatterlist sg;
-        struct hash_desc desc;
+        struct crypto_shash *tfm;
         u32 image_size, off;
         int ret;
 
@@ -438,12 +437,31 @@ int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
 
         /* Compute SHA of firmware data */
 
-        sg_init_one(&sg, fw->image, image_size);
-        desc.tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
-        crypto_hash_init(&desc);
-        crypto_hash_update(&desc, &sg, image_size);
-        crypto_hash_final(&desc, hash_data);
-        crypto_free_hash(desc.tfm);
+        tfm = crypto_alloc_shash("sha1", 0, 0);
+        if (IS_ERR(tfm)) {
+                ret = PTR_ERR(tfm);
+                dev_err(&fw_info->ndev->nfc_dev->dev,
+                        "Cannot allocate shash (code=%d)\n", ret);
+                goto out;
+        }
+
+        {
+                SHASH_DESC_ON_STACK(desc, tfm);
+
+                desc->tfm = tfm;
+                desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+                ret = crypto_shash_digest(desc, fw->image, image_size,
+                                          hash_data);
+                shash_desc_zero(desc);
+        }
+
+        crypto_free_shash(tfm);
+        if (ret) {
+                dev_err(&fw_info->ndev->nfc_dev->dev,
+                        "Cannot compute hash (code=%d)\n", ret);
+                goto out;
+        }
 
         /* Firmware update process */