[21/26] nfc: s3fwrn5: Use shash
diff mbox series

Message ID E1aNKZn-0008FU-OU@gondolin.me.apana.org.au
State New, archived
Headers show
Series
  • crypto: Use skcipher and ahash/shash where possible
Related show

Commit Message

Herbert Xu Jan. 24, 2016, 1:19 p.m. UTC
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(-)

Comments

kernel test robot Jan. 24, 2016, 1:48 p.m. UTC | #1
Hi Herbert,

[auto build test ERROR on net/master]
[also build test ERROR on v4.4 next-20160122]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Herbert-Xu/crypto-Use-skcipher-and-ahash-shash-where-possible/20160124-212323
config: x86_64-randconfig-x014-201604 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/nfc/s3fwrn5/firmware.c: In function 's3fwrn5_fw_download':
>> drivers/nfc/s3fwrn5/firmware.c:456:3: error: implicit declaration of function 'shash_desc_zero' [-Werror=implicit-function-declaration]
      shash_desc_zero(desc);
      ^
   cc1: some warnings being treated as errors

vim +/shash_desc_zero +456 drivers/nfc/s3fwrn5/firmware.c

   450	
   451			desc->tfm = tfm;
   452			desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
   453	
   454			ret = crypto_shash_digest(desc, fw->image, image_size,
   455						  hash_data);
 > 456			shash_desc_zero(desc);
   457		}
   458	
   459		crypto_free_shash(tfm);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Patch
diff mbox series

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 */