[PATCH 0/4] delete useless initialization

[PATCH 0/4] delete useless initialization

[Julia Lawall]

These patches fix cases where a variable is initialized in some non-trivial
way, and the result is immediately overwritten with the result of some
allocation function.

[PATCH 0/4] delete useless initialization

[Julia Lawall]

These patches fix cases where a variable is initialized in some non-trivial
way, and the result is immediately overwritten with the result of some
allocation function.

[PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 fs/ext3/balloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/fs/ext3/balloc.c b/fs/ext3/balloc.c
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -427,7 +427,7 @@ static inline int rsv_is_empty(struct ex
 void ext3_init_block_alloc_info(struct inode *inode)
 {
 	struct ext3_inode_info *ei = EXT3_I(inode);
-	struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
+	struct ext3_block_alloc_info *block_i;
 	struct super_block *sb = inode->i_sb;
 
 	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);

[PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 fs/ext3/balloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/fs/ext3/balloc.c b/fs/ext3/balloc.c
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -427,7 +427,7 @@ static inline int rsv_is_empty(struct ex
 void ext3_init_block_alloc_info(struct inode *inode)
 {
 	struct ext3_inode_info *ei = EXT3_I(inode);
-	struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
+	struct ext3_block_alloc_info *block_i;
 	struct super_block *sb = inode->i_sb;
 
 	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);

Re: [PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Jan Kara]

On Thu 04-08-11 12:29:31, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
  Thanks. Merged.

								Honza

> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  fs/ext3/balloc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/fs/ext3/balloc.c b/fs/ext3/balloc.c
> --- a/fs/ext3/balloc.c
> +++ b/fs/ext3/balloc.c
> @@ -427,7 +427,7 @@ static inline int rsv_is_empty(struct ex
>  void ext3_init_block_alloc_info(struct inode *inode)
>  {
>  	struct ext3_inode_info *ei = EXT3_I(inode);
> -	struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
> +	struct ext3_block_alloc_info *block_i;
>  	struct super_block *sb = inode->i_sb;
>  
>  	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
> 
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: [PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Jan Kara]

On Thu 04-08-11 12:29:31, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
  Thanks. Merged.

								Honza

> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  fs/ext3/balloc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/fs/ext3/balloc.c b/fs/ext3/balloc.c
> --- a/fs/ext3/balloc.c
> +++ b/fs/ext3/balloc.c
> @@ -427,7 +427,7 @@ static inline int rsv_is_empty(struct ex
>  void ext3_init_block_alloc_info(struct inode *inode)
>  {
>  	struct ext3_inode_info *ei = EXT3_I(inode);
> -	struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
> +	struct ext3_block_alloc_info *block_i;
>  	struct super_block *sb = inode->i_sb;
>  
>  	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
> 
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: [PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Eric Sandeen]

On 8/4/11 5:40 AM, Jan Kara wrote:
> On Thu 04-08-11 12:29:31, Julia Lawall wrote:
>> From: Julia Lawall <julia@diku.dk>
>>
>> Delete nontrivial initialization that is immediately overwritten by the
>> result of an allocation function.
>   Thanks. Merged.

Just FWIW, I was curious how this ended up here.

It looks like this has been there since 2005, and both
lines went in in the same commit (i.e. it didn't creep in over time).

http://git.kernel.org/?p=linux/kernel/git/torvalds/old-2.6-bkcvs.git;a=commitdiff;h=a66d457d8878fe8d09bc81f0d5e6ac40caec6eb7

-Eric

> 								Honza
> 
>>
>> The semantic match that makes this change is as follows:
>> (http://coccinelle.lip6.fr/)
>>
>> // <smpl>
>> @@
>> type T;
>> identifier i;
>> expression e;
>> @@
>>
>> (
>> T i = \(0\|NULL\|ERR_PTR(...)\);
>> |
>> -T i = e;
>> +T i;
>> )
>> ... when != i
>> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
>>
>> // </smpl>
>>
>> Signed-off-by: Julia Lawall <julia@diku.dk>
>>
>> ---
>>  fs/ext3/balloc.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff -u -p a/fs/ext3/balloc.c b/fs/ext3/balloc.c
>> --- a/fs/ext3/balloc.c
>> +++ b/fs/ext3/balloc.c
>> @@ -427,7 +427,7 @@ static inline int rsv_is_empty(struct ex
>>  void ext3_init_block_alloc_info(struct inode *inode)
>>  {
>>  	struct ext3_inode_info *ei = EXT3_I(inode);
>> -	struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
>> +	struct ext3_block_alloc_info *block_i;
>>  	struct super_block *sb = inode->i_sb;
>>  
>>  	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
>>

Re: [PATCH 1/4] fs/ext3/balloc.c: delete useless initialization

[Julia Lawall]

On Fri, 5 Aug 2011, Eric Sandeen wrote:

> On 8/4/11 5:40 AM, Jan Kara wrote:
> > On Thu 04-08-11 12:29:31, Julia Lawall wrote:
> >> From: Julia Lawall <julia@diku.dk>
> >>
> >> Delete nontrivial initialization that is immediately overwritten by the
> >> result of an allocation function.
> >   Thanks. Merged.
> 
> Just FWIW, I was curious how this ended up here.
> 
> It looks like this has been there since 2005, and both
> lines went in in the same commit (i.e. it didn't creep in over time).
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/old-2.6-bkcvs.git;a=commitdiff;h=a66d457d8878fe8d09bc81f0d5e6ac40caec6eb7

Actually, the old code had the same property, for the rsv variable...

julia

[PATCH 2/4] fs/ext2/balloc.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 fs/ext2/balloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/fs/ext2/balloc.c b/fs/ext2/balloc.c
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -421,7 +421,7 @@ static inline int rsv_is_empty(struct ex
 void ext2_init_block_alloc_info(struct inode *inode)
 {
 	struct ext2_inode_info *ei = EXT2_I(inode);
-	struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info;
+	struct ext2_block_alloc_info *block_i;
 	struct super_block *sb = inode->i_sb;
 
 	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);

[PATCH 2/4] fs/ext2/balloc.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 fs/ext2/balloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/fs/ext2/balloc.c b/fs/ext2/balloc.c
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -421,7 +421,7 @@ static inline int rsv_is_empty(struct ex
 void ext2_init_block_alloc_info(struct inode *inode)
 {
 	struct ext2_inode_info *ei = EXT2_I(inode);
-	struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info;
+	struct ext2_block_alloc_info *block_i;
 	struct super_block *sb = inode->i_sb;
 
 	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);

Re: [PATCH 2/4] fs/ext2/balloc.c: delete useless initialization

[Jan Kara]

On Thu 04-08-11 12:29:32, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
  Thanks. Merged.

								Honza
> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  fs/ext2/balloc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/fs/ext2/balloc.c b/fs/ext2/balloc.c
> --- a/fs/ext2/balloc.c
> +++ b/fs/ext2/balloc.c
> @@ -421,7 +421,7 @@ static inline int rsv_is_empty(struct ex
>  void ext2_init_block_alloc_info(struct inode *inode)
>  {
>  	struct ext2_inode_info *ei = EXT2_I(inode);
> -	struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info;
> +	struct ext2_block_alloc_info *block_i;
>  	struct super_block *sb = inode->i_sb;
>  
>  	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
> 
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: [PATCH 2/4] fs/ext2/balloc.c: delete useless initialization

[Jan Kara]

On Thu 04-08-11 12:29:32, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
  Thanks. Merged.

								Honza
> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  fs/ext2/balloc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/fs/ext2/balloc.c b/fs/ext2/balloc.c
> --- a/fs/ext2/balloc.c
> +++ b/fs/ext2/balloc.c
> @@ -421,7 +421,7 @@ static inline int rsv_is_empty(struct ex
>  void ext2_init_block_alloc_info(struct inode *inode)
>  {
>  	struct ext2_inode_info *ei = EXT2_I(inode);
> -	struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info;
> +	struct ext2_block_alloc_info *block_i;
>  	struct super_block *sb = inode->i_sb;
>  
>  	block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
> 
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

[PATCH 3/4] drivers/media/video/hexium_gemini.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/media/video/hexium_gemini.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/media/video/hexium_gemini.c b/drivers/media/video/hexium_gemini.c
--- a/drivers/media/video/hexium_gemini.c
+++ b/drivers/media/video/hexium_gemini.c
@@ -352,7 +352,7 @@ static struct saa7146_ext_vv vv_data;
 /* this function only gets called when the probing was successful */
 static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
 {
-	struct hexium *hexium = (struct hexium *) dev->ext_priv;
+	struct hexium *hexium;
 	int ret;
 
 	DEB_EE((".\n"));

[PATCH 3/4] drivers/media/video/hexium_gemini.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/media/video/hexium_gemini.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/media/video/hexium_gemini.c b/drivers/media/video/hexium_gemini.c
--- a/drivers/media/video/hexium_gemini.c
+++ b/drivers/media/video/hexium_gemini.c
@@ -352,7 +352,7 @@ static struct saa7146_ext_vv vv_data;
 /* this function only gets called when the probing was successful */
 static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
 {
-	struct hexium *hexium = (struct hexium *) dev->ext_priv;
+	struct hexium *hexium;
 	int ret;
 
 	DEB_EE((".\n"));

Re: [PATCH 3/4] drivers/media/video/hexium_gemini.c: delete useless

[Jean Delvare]

Hi Julia,

On Thu,  4 Aug 2011 12:29:33 +0200, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
> (...)
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  drivers/media/video/hexium_gemini.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/drivers/media/video/hexium_gemini.c b/drivers/media/video/hexium_gemini.c
> --- a/drivers/media/video/hexium_gemini.c
> +++ b/drivers/media/video/hexium_gemini.c
> @@ -352,7 +352,7 @@ static struct saa7146_ext_vv vv_data;
>  /* this function only gets called when the probing was successful */
>  static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
>  {
> -	struct hexium *hexium = (struct hexium *) dev->ext_priv;
> +	struct hexium *hexium;
>  	int ret;
>  
>  	DEB_EE((".\n"));
> 

Looks correct.

Acked-by: Jean Delvare <khali@linux-fr.org>

-- 
Jean Delvare

Re: [PATCH 3/4] drivers/media/video/hexium_gemini.c: delete useless initialization

[Jean Delvare]

Hi Julia,

On Thu,  4 Aug 2011 12:29:33 +0200, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
> (...)
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---
>  drivers/media/video/hexium_gemini.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/drivers/media/video/hexium_gemini.c b/drivers/media/video/hexium_gemini.c
> --- a/drivers/media/video/hexium_gemini.c
> +++ b/drivers/media/video/hexium_gemini.c
> @@ -352,7 +352,7 @@ static struct saa7146_ext_vv vv_data;
>  /* this function only gets called when the probing was successful */
>  static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
>  {
> -	struct hexium *hexium = (struct hexium *) dev->ext_priv;
> +	struct hexium *hexium;
>  	int ret;
>  
>  	DEB_EE((".\n"));
> 

Looks correct.

Acked-by: Jean Delvare <khali@linux-fr.org>

-- 
Jean Delvare

[PATCH 4/4] drivers/leds/leds-pca9532.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/leds/leds-pca9532.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -447,7 +447,7 @@ exit:
 static int pca9532_probe(struct i2c_client *client,
 	const struct i2c_device_id *id)
 {
-	struct pca9532_data *data = i2c_get_clientdata(client);
+	struct pca9532_data *data;
 	struct pca9532_platform_data *pca9532_pdata = client->dev.platform_data;
 	int err;
 

[PATCH 4/4] drivers/leds/leds-pca9532.c: delete useless initialization

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Delete nontrivial initialization that is immediately overwritten by the
result of an allocation function.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
identifier i;
expression e;
@@

(
T i = \(0\|NULL\|ERR_PTR(...)\);
|
-T i = e;
+T i;
)
... when != i
i = \(kzalloc\|kcalloc\|kmalloc\)(...);

// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 drivers/leds/leds-pca9532.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -447,7 +447,7 @@ exit:
 static int pca9532_probe(struct i2c_client *client,
 	const struct i2c_device_id *id)
 {
-	struct pca9532_data *data = i2c_get_clientdata(client);
+	struct pca9532_data *data;
 	struct pca9532_platform_data *pca9532_pdata = client->dev.platform_data;
 	int err;
 

Re: [PATCH 4/4] drivers/leds/leds-pca9532.c: delete useless

[Wolfram Sang]

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On Thu, Aug 04, 2011 at 12:29:34PM +0200, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>

Acked-by: Wolfram Sang <w.sang@pengutronix.de>

BTW LED patches seem to go via akpm these days...

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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Re: [PATCH 4/4] drivers/leds/leds-pca9532.c: delete useless initialization

[Wolfram Sang]

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On Thu, Aug 04, 2011 at 12:29:34PM +0200, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Delete nontrivial initialization that is immediately overwritten by the
> result of an allocation function.
> 
> The semantic match that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> type T;
> identifier i;
> expression e;
> @@
> 
> (
> T i = \(0\|NULL\|ERR_PTR(...)\);
> |
> -T i = e;
> +T i;
> )
> ... when != i
> i = \(kzalloc\|kcalloc\|kmalloc\)(...);
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>

Acked-by: Wolfram Sang <w.sang@pengutronix.de>

BTW LED patches seem to go via akpm these days...

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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