Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Michael S. Tsirkin]

On Fri, Apr 07, 2023 at 05:01:30PM +0200, Krzysztof Kozlowski wrote:
> Statically allocated array of pointed to hwmon_channel_info can be made
> const for safety.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

sure, merge it as appropriate
Acked-by: Michael S. Tsirkin <mst@redhat.com>

> ---
> 
> This depends on hwmon core patch:
> https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
> 
> Therefore I propose this should also go via hwmon tree.
> 
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-hwmon@vger.kernel.org
> ---
>  drivers/vdpa/solidrun/snet_hwmon.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/vdpa/solidrun/snet_hwmon.c b/drivers/vdpa/solidrun/snet_hwmon.c
> index e695e36ff753..65304354b34a 100644
> --- a/drivers/vdpa/solidrun/snet_hwmon.c
> +++ b/drivers/vdpa/solidrun/snet_hwmon.c
> @@ -159,7 +159,7 @@ static const struct hwmon_ops snet_hwmon_ops = {
>  	.read_string = snet_hwmon_read_string
>  };
>  
> -static const struct hwmon_channel_info *snet_hwmon_info[] = {
> +static const struct hwmon_channel_info * const snet_hwmon_info[] = {
>  	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_LABEL,
>  			   HWMON_T_INPUT | HWMON_T_CRIT | HWMON_T_LABEL),
>  	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT | HWMON_P_LABEL),
> -- 
> 2.34.1

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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Alvaro Karsz]

> Statically allocated array of pointed to hwmon_channel_info can be made
> const for safety.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 

Thanks!

Reviewed-by: Alvaro Karsz <alvaro.karsz@solid-run.com>
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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Guenter Roeck]

On 4/7/23 08:01, Krzysztof Kozlowski wrote:
> Statically allocated array of pointed to hwmon_channel_info can be made
> const for safety.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> ---
> 
> This depends on hwmon core patch:
> https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
> 
> Therefore I propose this should also go via hwmon tree.

I am not going to apply patches for 10+ subsystems through the hwmon tree.
This can only result in chaos. The dependent patch is available at

git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-const

or wait until after the next commit window to apply this patch.

Thanks,
Guenter

> 
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-hwmon@vger.kernel.org
> ---
>   drivers/vdpa/solidrun/snet_hwmon.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/vdpa/solidrun/snet_hwmon.c b/drivers/vdpa/solidrun/snet_hwmon.c
> index e695e36ff753..65304354b34a 100644
> --- a/drivers/vdpa/solidrun/snet_hwmon.c
> +++ b/drivers/vdpa/solidrun/snet_hwmon.c
> @@ -159,7 +159,7 @@ static const struct hwmon_ops snet_hwmon_ops = {
>   	.read_string = snet_hwmon_read_string
>   };
>   
> -static const struct hwmon_channel_info *snet_hwmon_info[] = {
> +static const struct hwmon_channel_info * const snet_hwmon_info[] = {
>   	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_LABEL,
>   			   HWMON_T_INPUT | HWMON_T_CRIT | HWMON_T_LABEL),
>   	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT | HWMON_P_LABEL),

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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Michael S. Tsirkin]

On Fri, Apr 07, 2023 at 04:08:30PM -0700, Guenter Roeck wrote:
> On 4/7/23 08:01, Krzysztof Kozlowski wrote:
> > Statically allocated array of pointed to hwmon_channel_info can be made
> > const for safety.
> > 
> > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> > 
> > ---
> > 
> > This depends on hwmon core patch:
> > https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
> > 
> > Therefore I propose this should also go via hwmon tree.
> 
> I am not going to apply patches for 10+ subsystems through the hwmon tree.
> This can only result in chaos. The dependent patch is available at
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-const

Doesn't it cause build errors or warnings there?

> or wait until after the next commit window to apply this patch.
> 
> Thanks,
> Guenter
> 
> > 
> > Cc: Jean Delvare <jdelvare@suse.com>
> > Cc: Guenter Roeck <linux@roeck-us.net>
> > Cc: linux-hwmon@vger.kernel.org
> > ---
> >   drivers/vdpa/solidrun/snet_hwmon.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/vdpa/solidrun/snet_hwmon.c b/drivers/vdpa/solidrun/snet_hwmon.c
> > index e695e36ff753..65304354b34a 100644
> > --- a/drivers/vdpa/solidrun/snet_hwmon.c
> > +++ b/drivers/vdpa/solidrun/snet_hwmon.c
> > @@ -159,7 +159,7 @@ static const struct hwmon_ops snet_hwmon_ops = {
> >   	.read_string = snet_hwmon_read_string
> >   };
> > -static const struct hwmon_channel_info *snet_hwmon_info[] = {
> > +static const struct hwmon_channel_info * const snet_hwmon_info[] = {
> >   	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_LABEL,
> >   			   HWMON_T_INPUT | HWMON_T_CRIT | HWMON_T_LABEL),
> >   	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT | HWMON_P_LABEL),

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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Guenter Roeck]

On 4/10/23 02:56, Michael S. Tsirkin wrote:
> On Fri, Apr 07, 2023 at 04:08:30PM -0700, Guenter Roeck wrote:
>> On 4/7/23 08:01, Krzysztof Kozlowski wrote:
>>> Statically allocated array of pointed to hwmon_channel_info can be made
>>> const for safety.
>>>
>>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>>>
>>> ---
>>>
>>> This depends on hwmon core patch:
>>> https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
>>>
>>> Therefore I propose this should also go via hwmon tree.
>>
>> I am not going to apply patches for 10+ subsystems through the hwmon tree.
>> This can only result in chaos. The dependent patch is available at
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-const
> 
> Doesn't it cause build errors or warnings there?
> 

Are you saying that "hwmon: constify pointers to hwmon_channel_info" applied on its own
on top of v6.3-rc5 (as done in above branch) causes build errors or warnings ?
I have not seen any such reports, and I don't immediately see why that would be
the case. Please elaborate.

Guenter

>> or wait until after the next commit window to apply this patch.
>>
>> Thanks,
>> Guenter
>>
>>>
>>> Cc: Jean Delvare <jdelvare@suse.com>
>>> Cc: Guenter Roeck <linux@roeck-us.net>
>>> Cc: linux-hwmon@vger.kernel.org
>>> ---
>>>    drivers/vdpa/solidrun/snet_hwmon.c | 2 +-
>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/vdpa/solidrun/snet_hwmon.c b/drivers/vdpa/solidrun/snet_hwmon.c
>>> index e695e36ff753..65304354b34a 100644
>>> --- a/drivers/vdpa/solidrun/snet_hwmon.c
>>> +++ b/drivers/vdpa/solidrun/snet_hwmon.c
>>> @@ -159,7 +159,7 @@ static const struct hwmon_ops snet_hwmon_ops = {
>>>    	.read_string = snet_hwmon_read_string
>>>    };
>>> -static const struct hwmon_channel_info *snet_hwmon_info[] = {
>>> +static const struct hwmon_channel_info * const snet_hwmon_info[] = {
>>>    	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_LABEL,
>>>    			   HWMON_T_INPUT | HWMON_T_CRIT | HWMON_T_LABEL),
>>>    	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT | HWMON_P_LABEL),
> 

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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Michael S. Tsirkin]

On Mon, Apr 10, 2023 at 06:48:12PM +0200, Krzysztof Kozlowski wrote:
> On 10/04/2023 16:03, Guenter Roeck wrote:
> > On 4/10/23 02:56, Michael S. Tsirkin wrote:
> >> On Fri, Apr 07, 2023 at 04:08:30PM -0700, Guenter Roeck wrote:
> >>> On 4/7/23 08:01, Krzysztof Kozlowski wrote:
> >>>> Statically allocated array of pointed to hwmon_channel_info can be made
> >>>> const for safety.
> >>>>
> >>>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> >>>>
> >>>> ---
> >>>>
> >>>> This depends on hwmon core patch:
> >>>> https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
> >>>>
> >>>> Therefore I propose this should also go via hwmon tree.
> >>>
> >>> I am not going to apply patches for 10+ subsystems through the hwmon tree.
> >>> This can only result in chaos. The dependent patch is available at
> >>>
> >>> git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-const
> >>
> >> Doesn't it cause build errors or warnings there?
> >>
> > 
> > Are you saying that "hwmon: constify pointers to hwmon_channel_info" applied on its own
> > on top of v6.3-rc5 (as done in above branch) causes build errors or warnings ?
> > I have not seen any such reports, and I don't immediately see why that would be
> > the case. Please elaborate.
> 
> My tree and patches are extensively tested by kbuild and there was no
> warning reported (when the above patch is applied with above dependency).
> 
> Best regards,
> Krzysztof

I don't know, I assumed the vdpa patch fixes build. If not,
I think we can just wait with the vdpa patch until after
the hwmon one is upstream.

Thanks!


-- 
MST

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Re: [PATCH] vdpa: solidrun: constify pointers to hwmon_channel_info

[Michael S. Tsirkin]

On Mon, Apr 10, 2023 at 07:03:01AM -0700, Guenter Roeck wrote:
> On 4/10/23 02:56, Michael S. Tsirkin wrote:
> > On Fri, Apr 07, 2023 at 04:08:30PM -0700, Guenter Roeck wrote:
> > > On 4/7/23 08:01, Krzysztof Kozlowski wrote:
> > > > Statically allocated array of pointed to hwmon_channel_info can be made
> > > > const for safety.
> > > > 
> > > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> > > > 
> > > > ---
> > > > 
> > > > This depends on hwmon core patch:
> > > > https://lore.kernel.org/all/20230406203103.3011503-2-krzysztof.kozlowski@linaro.org/
> > > > 
> > > > Therefore I propose this should also go via hwmon tree.
> > > 
> > > I am not going to apply patches for 10+ subsystems through the hwmon tree.
> > > This can only result in chaos. The dependent patch is available at
> > > 
> > > git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-const
> > 
> > Doesn't it cause build errors or warnings there?
> > 
> 
> Are you saying that "hwmon: constify pointers to hwmon_channel_info" applied on its own
> on top of v6.3-rc5 (as done in above branch) causes build errors or warnings ?
> I have not seen any such reports, and I don't immediately see why that would be
> the case. Please elaborate.
> 
> Guenter


I'm not saying that, I just assumed the vdpa patch fixes build.
If build is ok we can just wait for hwmon patch to get upstream. No
rush.

> > > or wait until after the next commit window to apply this patch.
> > > 
> > > Thanks,
> > > Guenter
> > > 
> > > > 
> > > > Cc: Jean Delvare <jdelvare@suse.com>
> > > > Cc: Guenter Roeck <linux@roeck-us.net>
> > > > Cc: linux-hwmon@vger.kernel.org
> > > > ---
> > > >    drivers/vdpa/solidrun/snet_hwmon.c | 2 +-
> > > >    1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > diff --git a/drivers/vdpa/solidrun/snet_hwmon.c b/drivers/vdpa/solidrun/snet_hwmon.c
> > > > index e695e36ff753..65304354b34a 100644
> > > > --- a/drivers/vdpa/solidrun/snet_hwmon.c
> > > > +++ b/drivers/vdpa/solidrun/snet_hwmon.c
> > > > @@ -159,7 +159,7 @@ static const struct hwmon_ops snet_hwmon_ops = {
> > > >    	.read_string = snet_hwmon_read_string
> > > >    };
> > > > -static const struct hwmon_channel_info *snet_hwmon_info[] = {
> > > > +static const struct hwmon_channel_info * const snet_hwmon_info[] = {
> > > >    	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_LABEL,
> > > >    			   HWMON_T_INPUT | HWMON_T_CRIT | HWMON_T_LABEL),
> > > >    	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT | HWMON_P_LABEL),
> > 

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