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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>
This commit is contained in:
Herbert Xu 2016-01-24 21:19:31 +08:00
parent 9534d67195
commit 4a31340b36
1 changed files with 27 additions and 9 deletions
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36
drivers/nfc/s3fwrn5/firmware.c
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@ -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 */