Patchwork Staging: ccree: Merge assignment with return

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Submitter srishti
Date Sept. 8, 2017, 8:01 p.m.
Message ID <1504900895-13110-1-git-send-email-srishtishar@gmail.com>
Download mbox | patch
Permalink /patch/9944973/
State Not Applicable
Delegated to: Herbert Xu
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Comments

srishti - Sept. 8, 2017, 8:01 p.m.
Return the return value of a function directly, instead of first saving it in a variable and then returning it. This change was made using the following
semantic patch by coccinelle.

@@
local idexpression ret;
expression e;
@@

-ret =
+return
     e;
-return ret;

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
---
 drivers/staging/ccree/ssi_aead.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

--
2.7.4
Julia Lawall - Sept. 8, 2017, 8:12 p.m.
On Sat, 9 Sep 2017, Srishti Sharma wrote:

> Return the return value of a function directly, instead of first saving it in a variable and then returning it. This change was made using the following

Your commit message should respect the 80 character limit. The above is
one very long line.

> semantic patch by coccinelle.
>
> @@
> local idexpression ret;
> expression e;
> @@
>
> -ret =
> +return
>      e;
> -return ret;
>
> Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
> ---
>  drivers/staging/ccree/ssi_aead.c | 21 ++++++---------------
>  1 file changed, 6 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
> index 5abe6b2..6bb98f7 100644
> --- a/drivers/staging/ccree/ssi_aead.c
> +++ b/drivers/staging/ccree/ssi_aead.c
> @@ -651,17 +651,14 @@ 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;
> -
> +

I'm not sure what happened here, but you should not be removing and then
adding back a blank line.  Likewise below.

julia

>  	if (keylen < 3)
>  		return -EINVAL;
>
>  	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*/
>
> @@ -2214,8 +2211,7 @@ static int ssi_rfc4309_ccm_decrypt(struct aead_request *req)
>  static int ssi_rfc4106_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);
>
>  	if (keylen < 4)
> @@ -2224,16 +2220,13 @@ 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);
>
>  	if (keylen < 4)
> @@ -2242,9 +2235,7 @@ 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 outreachy-kernel+unsubscribe@googlegroups.com.
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> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1504900895-13110-1-git-send-email-srishtishar%40gmail.com.
> For more options, visit https://groups.google.com/d/optout.
>
srishti - Sept. 8, 2017, 8:24 p.m.
On Sat, Sep 9, 2017 at 1:42 AM, Julia Lawall <julia.lawall@lip6.fr> wrote:
>
>
> On Sat, 9 Sep 2017, Srishti Sharma wrote:
>
>> Return the return value of a function directly, instead of first saving it in a variable and then returning it. This change was made using the following
>
> Your commit message should respect the 80 character limit. The above is
> one very long line.

Yes, I'll fix it . Thanks
>
>> semantic patch by coccinelle.
>>
>> @@
>> local idexpression ret;
>> expression e;
>> @@
>>
>> -ret =
>> +return
>>      e;
>> -return ret;
>>
>> Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
>> ---
>>  drivers/staging/ccree/ssi_aead.c | 21 ++++++---------------
>>  1 file changed, 6 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
>> index 5abe6b2..6bb98f7 100644
>> --- a/drivers/staging/ccree/ssi_aead.c
>> +++ b/drivers/staging/ccree/ssi_aead.c
>> @@ -651,17 +651,14 @@ 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;
>> -
>> +
>
> I'm not sure what happened here, but you should not be removing and then
> adding back a blank line.  Likewise below.

Sorry , I must have removed an already existing blank line by mistake
and must have re-added it upon realising the same. I'll fix these and
send again.

Regards,
Srishti

>
> julia
>
>>       if (keylen < 3)
>>               return -EINVAL;
>>
>>       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*/
>>
>> @@ -2214,8 +2211,7 @@ static int ssi_rfc4309_ccm_decrypt(struct aead_request *req)
>>  static int ssi_rfc4106_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);
>>
>>       if (keylen < 4)
>> @@ -2224,16 +2220,13 @@ 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);
>>
>>       if (keylen < 4)
>> @@ -2242,9 +2235,7 @@ 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 outreachy-kernel+unsubscribe@googlegroups.com.
>> To post to this group, send email to outreachy-kernel@googlegroups.com.
>> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1504900895-13110-1-git-send-email-srishtishar%40gmail.com.
>> For more options, visit https://groups.google.com/d/optout.
>>
Julia Lawall - Sept. 8, 2017, 8:31 p.m.
On Sat, 9 Sep 2017, Srishti Sharma wrote:

> On Sat, Sep 9, 2017 at 1:42 AM, Julia Lawall <julia.lawall@lip6.fr> wrote:
> >
> >
> > On Sat, 9 Sep 2017, Srishti Sharma wrote:
> >
> >> Return the return value of a function directly, instead of first saving it in a variable and then returning it. This change was made using the following
> >
> > Your commit message should respect the 80 character limit. The above is
> > one very long line.
>
> Yes, I'll fix it . Thanks
> >
> >> semantic patch by coccinelle.
> >>
> >> @@
> >> local idexpression ret;
> >> expression e;
> >> @@
> >>
> >> -ret =
> >> +return
> >>      e;
> >> -return ret;
> >>
> >> Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
> >> ---
> >>  drivers/staging/ccree/ssi_aead.c | 21 ++++++---------------
> >>  1 file changed, 6 insertions(+), 15 deletions(-)
> >>
> >> diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
> >> index 5abe6b2..6bb98f7 100644
> >> --- a/drivers/staging/ccree/ssi_aead.c
> >> +++ b/drivers/staging/ccree/ssi_aead.c
> >> @@ -651,17 +651,14 @@ 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;
> >> -
> >> +
> >
> > I'm not sure what happened here, but you should not be removing and then
> > adding back a blank line.  Likewise below.
>
> Sorry , I must have removed an already existing blank line by mistake
> and must have re-added it upon realising the same. I'll fix these and
> send again.

There must be some change in spacing.  Otherwise there would be no diff.

julia

>
> Regards,
> Srishti
>
> >
> > julia
> >
> >>       if (keylen < 3)
> >>               return -EINVAL;
> >>
> >>       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*/
> >>
> >> @@ -2214,8 +2211,7 @@ static int ssi_rfc4309_ccm_decrypt(struct aead_request *req)
> >>  static int ssi_rfc4106_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);
> >>
> >>       if (keylen < 4)
> >> @@ -2224,16 +2220,13 @@ 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);
> >>
> >>       if (keylen < 4)
> >> @@ -2242,9 +2235,7 @@ 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 outreachy-kernel+unsubscribe@googlegroups.com.
> >> To post to this group, send email to outreachy-kernel@googlegroups.com.
> >> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1504900895-13110-1-git-send-email-srishtishar%40gmail.com.
> >> For more options, visit https://groups.google.com/d/optout.
> >>
>
> --
> 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 outreachy-kernel+unsubscribe@googlegroups.com.
> To post to this group, send email to outreachy-kernel@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/CAB3L5ow4-GeOfh%3D23T58JNUmxu4mmOoG1rwH6fccrzwTNvTu1w%40mail.gmail.com.
> For more options, visit https://groups.google.com/d/optout.
>

Patch

diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
index 5abe6b2..6bb98f7 100644
--- a/drivers/staging/ccree/ssi_aead.c
+++ b/drivers/staging/ccree/ssi_aead.c
@@ -651,17 +651,14 @@  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;

 	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*/

@@ -2214,8 +2211,7 @@  static int ssi_rfc4309_ccm_decrypt(struct aead_request *req)
 static int ssi_rfc4106_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);

 	if (keylen < 4)
@@ -2224,16 +2220,13 @@  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);

 	if (keylen < 4)
@@ -2242,9 +2235,7 @@  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,