2017-09-08 21:54:41

by Srishti Sharma

[permalink] [raw]
Subject: [PATCH v3] Staging: ccree: Merge assignment with return

Merge the assignment and return statements to return the value
directly. Done using coccinelle.

@@
local idexpression ret;
expression e;
@@

-ret =
+return
e;
-return ret;

Signed-off-by: Srishti Sharma <[email protected]>
---
Changes in v3:
-Edit commit message so that it respects 80 character limit.
-Remove unneeded blank lines, that were added by mistake.

drivers/staging/ccree/ssi_aead.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
index 5abe6b2..1d3b580 100644
--- a/drivers/staging/ccree/ssi_aead.c
+++ b/drivers/staging/ccree/ssi_aead.c
@@ -651,7 +651,6 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
{
struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
- int rc = 0;

if (keylen < 3)
return -EINVAL;
@@ -659,9 +658,7 @@ static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
keylen -= 3;
memcpy(ctx->ctr_nonce, key + keylen, 3);

- rc = ssi_aead_setkey(tfm, key, keylen);
-
- return rc;
+ return ssi_aead_setkey(tfm, key, keylen);
}
#endif /*SSI_CC_HAS_AES_CCM*/

@@ -2224,15 +2221,12 @@ static int ssi_rfc4106_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
keylen -= 4;
memcpy(ctx->ctr_nonce, key + keylen, 4);

- rc = ssi_aead_setkey(tfm, key, keylen);
-
- return rc;
+ return ssi_aead_setkey(tfm, key, keylen);
}

static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
{
struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
- int rc = 0;

SSI_LOG_DEBUG("%s() keylen %d, key %p\n", __func__, keylen, key);

@@ -2242,9 +2236,7 @@ static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
keylen -= 4;
memcpy(ctx->ctr_nonce, key + keylen, 4);

- rc = ssi_aead_setkey(tfm, key, keylen);
-
- return rc;
+ return ssi_aead_setkey(tfm, key, keylen);
}

static int ssi_gcm_setauthsize(struct crypto_aead *authenc,
--
2.7.4


2017-09-09 06:56:07

by Julia Lawall

[permalink] [raw]
Subject: Re: [Outreachy kernel] [PATCH v3] Staging: ccree: Merge assignment with return



On Sat, 9 Sep 2017, Srishti Sharma wrote:

> Merge the assignment and return statements to return the value
> directly. Done using coccinelle.
>
> @@
> local idexpression ret;
> expression e;
> @@
>
> -ret =
> +return
> e;
> -return ret;
>
> Signed-off-by: Srishti Sharma <[email protected]>
> ---
> Changes in v3:
> -Edit commit message so that it respects 80 character limit.
> -Remove unneeded blank lines, that were added by mistake.
>
> drivers/staging/ccree/ssi_aead.c | 14 +++-----------
> 1 file changed, 3 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
> index 5abe6b2..1d3b580 100644
> --- a/drivers/staging/ccree/ssi_aead.c
> +++ b/drivers/staging/ccree/ssi_aead.c
> @@ -651,7 +651,6 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
> static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
> {
> struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
> - int rc = 0;
>
> if (keylen < 3)
> return -EINVAL;
> @@ -659,9 +658,7 @@ static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
> keylen -= 3;
> memcpy(ctx->ctr_nonce, key + keylen, 3);
>
> - rc = ssi_aead_setkey(tfm, key, keylen);
> -
> - return rc;
> + return ssi_aead_setkey(tfm, key, keylen);
> }
> #endif /*SSI_CC_HAS_AES_CCM*/
>
> @@ -2224,15 +2221,12 @@ static int ssi_rfc4106_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
> keylen -= 4;
> memcpy(ctx->ctr_nonce, key + keylen, 4);
>
> - rc = ssi_aead_setkey(tfm, key, keylen);
> -
> - return rc;
> + return ssi_aead_setkey(tfm, key, keylen);

The declaration of rc should be dropped in this case. You should have
gotten a compiler warning. Always compile the code before submitting a
patch, and fix up any warnings.

julia

> }
>
> static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
> {
> struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
> - int rc = 0;
>
> SSI_LOG_DEBUG("%s() keylen %d, key %p\n", __func__, keylen, key);
>
> @@ -2242,9 +2236,7 @@ static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
> keylen -= 4;
> memcpy(ctx->ctr_nonce, key + keylen, 4);
>
> - rc = ssi_aead_setkey(tfm, key, keylen);
> -
> - return rc;
> + return ssi_aead_setkey(tfm, key, keylen);
> }
>
> static int ssi_gcm_setauthsize(struct crypto_aead *authenc,
> --
> 2.7.4
>
> --
> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
> To post to this group, send email to [email protected].
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> For more options, visit https://groups.google.com/d/optout.
>

2017-09-09 08:35:37

by Srishti Sharma

[permalink] [raw]
Subject: Re: [Outreachy kernel] [PATCH v3] Staging: ccree: Merge assignment with return

On Sat, Sep 9, 2017 at 12:26 PM, Julia Lawall <[email protected]> wrote:
>
>
> On Sat, 9 Sep 2017, Srishti Sharma wrote:
>
>> Merge the assignment and return statements to return the value
>> directly. Done using coccinelle.
>>
>> @@
>> local idexpression ret;
>> expression e;
>> @@
>>
>> -ret =
>> +return
>> e;
>> -return ret;
>>
>> Signed-off-by: Srishti Sharma <[email protected]>
>> ---
>> Changes in v3:
>> -Edit commit message so that it respects 80 character limit.
>> -Remove unneeded blank lines, that were added by mistake.
>>
>> drivers/staging/ccree/ssi_aead.c | 14 +++-----------
>> 1 file changed, 3 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
>> index 5abe6b2..1d3b580 100644
>> --- a/drivers/staging/ccree/ssi_aead.c
>> +++ b/drivers/staging/ccree/ssi_aead.c
>> @@ -651,7 +651,6 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
>> static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
>> {
>> struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
>> - int rc = 0;
>>
>> if (keylen < 3)
>> return -EINVAL;
>> @@ -659,9 +658,7 @@ static int ssi_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
>> keylen -= 3;
>> memcpy(ctx->ctr_nonce, key + keylen, 3);
>>
>> - rc = ssi_aead_setkey(tfm, key, keylen);
>> -
>> - return rc;
>> + return ssi_aead_setkey(tfm, key, keylen);
>> }
>> #endif /*SSI_CC_HAS_AES_CCM*/
>>
>> @@ -2224,15 +2221,12 @@ static int ssi_rfc4106_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
>> keylen -= 4;
>> memcpy(ctx->ctr_nonce, key + keylen, 4);
>>
>> - rc = ssi_aead_setkey(tfm, key, keylen);
>> -
>> - return rc;
>> + return ssi_aead_setkey(tfm, key, keylen);
>
> The declaration of rc should be dropped in this case. You should have
> gotten a compiler warning. Always compile the code before submitting a
> patch, and fix up any warnings.

I am very sorry about that, I have re-sent it.

Regards,
Srishti

> julia
>
>> }
>>
>> static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
>> {
>> struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
>> - int rc = 0;
>>
>> SSI_LOG_DEBUG("%s() keylen %d, key %p\n", __func__, keylen, key);
>>
>> @@ -2242,9 +2236,7 @@ static int ssi_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsign
>> keylen -= 4;
>> memcpy(ctx->ctr_nonce, key + keylen, 4);
>>
>> - rc = ssi_aead_setkey(tfm, key, keylen);
>> -
>> - return rc;
>> + return ssi_aead_setkey(tfm, key, keylen);
>> }
>>
>> static int ssi_gcm_setauthsize(struct crypto_aead *authenc,
>> --
>> 2.7.4
>>
>> --
>> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
>> To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
>> To post to this group, send email to [email protected].
>> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1504907654-4914-1-git-send-email-srishtishar%40gmail.com.
>> For more options, visit https://groups.google.com/d/optout.
>>