linux-kernel - Re: [PATCH] fpga: dfl-fme: constify pointers to hwmon_channel

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Date:   Fri, 7 Apr 2023 16:08:45 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
        Moritz Fischer <mdf@...nel.org>, Xu Yilun <yilun.xu@...el.com>,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH] fpga: dfl-fme: constify pointers to hwmon_channel_info

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@...aro.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@...e.com>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: linux-hwmon@...r.kernel.org
> ---
>   drivers/fpga/dfl-fme-main.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c
> index 77ea04d4edbe..bcb5d34b3b82 100644
> --- a/drivers/fpga/dfl-fme-main.c
> +++ b/drivers/fpga/dfl-fme-main.c
> @@ -265,7 +265,7 @@ static const struct hwmon_ops thermal_hwmon_ops = {
>   	.read = thermal_hwmon_read,
>   };
>   
> -static const struct hwmon_channel_info *thermal_hwmon_info[] = {
> +static const struct hwmon_channel_info * const thermal_hwmon_info[] = {
>   	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_EMERGENCY |
>   				 HWMON_T_MAX   | HWMON_T_MAX_ALARM |
>   				 HWMON_T_CRIT  | HWMON_T_CRIT_ALARM),
> @@ -465,7 +465,7 @@ static const struct hwmon_ops power_hwmon_ops = {
>   	.write = power_hwmon_write,
>   };
>   
> -static const struct hwmon_channel_info *power_hwmon_info[] = {
> +static const struct hwmon_channel_info * const power_hwmon_info[] = {
>   	HWMON_CHANNEL_INFO(power, HWMON_P_INPUT |
>   				  HWMON_P_MAX   | HWMON_P_MAX_ALARM |
>   				  HWMON_P_CRIT  | HWMON_P_CRIT_ALARM),