[PATCH 2/2] samples/kobject: make attribute_group const

[PATCH 2/2] samples/kobject: make attribute_group const

[Meng-Shao.Liu]

The attr_group structures are allocated once and never modified at
runtime.  Also to match the const‑qualified parameter of
sysfs_create_group().

No functional change.

Signed-off-by: Meng-Shao.Liu <sau525@gmail.com>
---
 samples/kobject/kobject-example.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c
index e6d7fc18e..36d87ca0b 100644
--- a/samples/kobject/kobject-example.c
+++ b/samples/kobject/kobject-example.c
@@ -102,7 +102,7 @@ static struct attribute *attrs[] = {
  * created for the attributes with the directory being the name of the
  * attribute group.
  */
-static struct attribute_group attr_group = {
+static const struct attribute_group attr_group = {
 	.attrs = attrs,
 };
 
-- 
2.43.0

Re: [PATCH 2/2] samples/kobject: make attribute_group const

[Greg KH]

On Tue, Jul 15, 2025 at 10:30:35PM +0800, Meng-Shao.Liu wrote:
> The attr_group structures are allocated once and never modified at
> runtime.  Also to match the const‑qualified parameter of
> sysfs_create_group().
> 
> No functional change.

This line isn't needed, as there is a functional change, it moves it
into read-only memory, right?

thanks,

greg k-h

[PATCH 2/2] samples/kobject: make attribute_group const

[Meng Shao Liu]

The attr_group structures are allocated once and never modified at
runtime.  Also to match the const‑qualified parameter of
sysfs_create_group().

Signed-off-by: Meng Shao Liu <sau525@gmail.com>
---
 samples/kobject/kobject-example.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c
index e6d7fc18e..36d87ca0b 100644
--- a/samples/kobject/kobject-example.c
+++ b/samples/kobject/kobject-example.c
@@ -102,7 +102,7 @@ static struct attribute *attrs[] = {
  * created for the attributes with the directory being the name of the
  * attribute group.
  */
-static struct attribute_group attr_group = {
+static const struct attribute_group attr_group = {
 	.attrs = attrs,
 };
 
-- 
2.43.0

Re: [PATCH 2/2] samples/kobject: make attribute_group const

[Greg KH]

On Wed, Jul 16, 2025 at 11:07:34AM +0800, Meng Shao Liu wrote:
> The attr_group structures are allocated once and never modified at
> runtime.  Also to match the const‑qualified parameter of
> sysfs_create_group().
> 
> Signed-off-by: Meng Shao Liu <sau525@gmail.com>
> ---
>  samples/kobject/kobject-example.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c
> index e6d7fc18e..36d87ca0b 100644
> --- a/samples/kobject/kobject-example.c
> +++ b/samples/kobject/kobject-example.c
> @@ -102,7 +102,7 @@ static struct attribute *attrs[] = {
>   * created for the attributes with the directory being the name of the
>   * attribute group.
>   */
> -static struct attribute_group attr_group = {
> +static const struct attribute_group attr_group = {
>  	.attrs = attrs,
>  };
>  
> -- 
> 2.43.0
> 

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
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You are receiving this message because of the following common error(s)
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  Please read the section entitled "The canonical patch format" in the
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If you wish to discuss this problem further, or you have questions about
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thanks,

greg k-h's patch email bot