[PATCH 1/2] thermal: int340x: constify attribute_group structures.

[PATCH 1/2] thermal: int340x: constify attribute_group structures.

[Arvind Yadav]

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   1687	    592	      0	   2279	    8e7	int3400_thermal.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   1751	    528	      0	   2279	    8e7	int3400_thermal.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/thermal/int340x_thermal/int3400_thermal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c
index a9ec94e..b2ffbed 100644
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
@@ -104,7 +104,7 @@ static ssize_t current_uuid_store(struct device *dev,
 	NULL
 };
 
-static struct attribute_group uuid_attribute_group = {
+static const struct attribute_group uuid_attribute_group = {
 	.attrs = uuid_attrs,
 	.name = "uuids"
 };
-- 
1.9.1

[PATCH 2/2] thermal: int340x_thermal: Constify attribute_group structures.

[Arvind Yadav]

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   3152	   1096	      8	   4256	   10a0	processor_thermal_device.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   3216	   1032	      8	   4256	   10a0	processor_thermal_device.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/thermal/int340x_thermal/processor_thermal_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/int340x_thermal/processor_thermal_device.c b/drivers/thermal/int340x_thermal/processor_thermal_device.c
index ff3b36f..f02341f 100644
--- a/drivers/thermal/int340x_thermal/processor_thermal_device.c
+++ b/drivers/thermal/int340x_thermal/processor_thermal_device.c
@@ -127,7 +127,7 @@ enum proc_thermal_emum_mode_type {
 	NULL
 };
 
-static struct attribute_group power_limit_attribute_group = {
+static const struct attribute_group power_limit_attribute_group = {
 	.attrs = power_limit_attrs,
 	.name = "power_limits"
 };
-- 
1.9.1

Re: [PATCH 1/2] thermal: int340x: constify attribute_group structures.

[Andy Shevchenko]

On Mon, 2017-07-17 at 16:04 +0530, Arvind Yadav wrote:
> attribute_groups are not supposed to change at runtime. All functions
> working with attribute_groups provided by <linux/sysfs.h> work
> with const attribute_group. So mark the non-const structs as const.
> 

I hope you did compile test it.

> File size before:
>    text	   data	    bss	    dec	    hex	
> filename
>    1687	    592	      0	   2279	    8e7	
> int3400_thermal.o
> 
> File size After adding 'const':
>    text	   data	    bss	    dec	    hex	
> filename
>    1751	    528	      0	   2279	    8e7	
> int3400_thermal.o
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
> ---
>  drivers/thermal/int340x_thermal/int3400_thermal.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c
> b/drivers/thermal/int340x_thermal/int3400_thermal.c
> index a9ec94e..b2ffbed 100644
> --- a/drivers/thermal/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
> @@ -104,7 +104,7 @@ static ssize_t current_uuid_store(struct device
> *dev,
>  	NULL
>  };
>  
> -static struct attribute_group uuid_attribute_group = {
> +static const struct attribute_group uuid_attribute_group = {
>  	.attrs = uuid_attrs,
>  	.name = "uuids"
>  };

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

Re: [PATCH 1/2] thermal: int340x: constify attribute_group structures.

[Arvind Yadav]

Hi Andy,


On Monday 17 July 2017 04:11 PM, Andy Shevchenko wrote:
> On Mon, 2017-07-17 at 16:04 +0530, Arvind Yadav wrote:
>> attribute_groups are not supposed to change at runtime. All functions
>> working with attribute_groups provided by <linux/sysfs.h> work
>> with const attribute_group. So mark the non-const structs as const.
>>
> I hope you did compile test it.
     I have compiled it. If we will see  <linux/sysfs.h>
     "int sysfs_create_group(struct kobject *kobj,  const struct 
attribute_group *grp)" and
     "void sysfs_remove_group(struct kobject *kobj, const struct 
attribute_group *grp);"
     Here, passing parameter attribute_group are constant. So I have 
changed non-const as const.

     ~arvind
>
>> File size before:
>>     text	   data	    bss	    dec	    hex	
>> filename
>>     1687	    592	      0	   2279	    8e7	
>> int3400_thermal.o
>>
>> File size After adding 'const':
>>     text	   data	    bss	    dec	    hex	
>> filename
>>     1751	    528	      0	   2279	    8e7	
>> int3400_thermal.o
>>
>> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
>> ---
>>   drivers/thermal/int340x_thermal/int3400_thermal.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c
>> b/drivers/thermal/int340x_thermal/int3400_thermal.c
>> index a9ec94e..b2ffbed 100644
>> --- a/drivers/thermal/int340x_thermal/int3400_thermal.c
>> +++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
>> @@ -104,7 +104,7 @@ static ssize_t current_uuid_store(struct device
>> *dev,
>>   	NULL
>>   };
>>   
>> -static struct attribute_group uuid_attribute_group = {
>> +static const struct attribute_group uuid_attribute_group = {
>>   	.attrs = uuid_attrs,
>>   	.name = "uuids"
>>   };