[PATCH 21/26] nfc: s3fwrn5: Use shash
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2016-01-24 13:20:26
Also in:
ceph-devel, dm-devel, linux-cifs, linux-crypto, linux-ext4, linux-f2fs-devel, linux-nfs, linux-wireless, lkml
Subsystem:
nfc subsystem, the rest · Maintainers:
David Heidelberg, Linus Torvalds
This patch replaces uses of the long obsolete hash interface with shash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> --- drivers/nfc/s3fwrn5/firmware.c | 36 +++++++++++++++++++++++++++--------- 1 file changed, 27 insertions(+), 9 deletions(-)
diff --git a/drivers/nfc/s3fwrn5/firmware.c b/drivers/nfc/s3fwrn5/firmware.c
index 64a9025..5f97da1 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 */