linux-kernel - Re: [PATCH v2 1/3] thermal/core: Fix unregistering netlink at thermal init time

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Message-ID: <9c2322a56f9cdc020e55a9e2003f434b84d873a7.camel@intel.com>
Date:   Tue, 24 Jan 2023 06:37:35 +0000
From:   "Zhang, Rui" <rui.zhang@...el.com>
To:     "rafael@...nel.org" <rafael@...nel.org>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>
CC:     "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "amitk@...nel.org" <amitk@...nel.org>
Subject: Re: [PATCH v2 1/3] thermal/core: Fix unregistering netlink at thermal
 init time

On Mon, 2023-01-23 at 16:27 +0100, Daniel Lezcano wrote:
> The thermal subsystem initialization miss an netlink

s/miss an netlink/misses a netlink

other than that, the patch looks good to me.

Reviewed-by: Zhang Rui <rui.zhang@...el.com>

-rui

>  unregistering
> function in the error. Add it.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> ---
>  drivers/thermal/thermal_core.c    | 4 +++-
>  drivers/thermal/thermal_netlink.c | 5 +++++
>  drivers/thermal/thermal_netlink.h | 3 +++
>  3 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> index d9a3d9566d73..fddafcee5e6f 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1606,7 +1606,7 @@ static int __init thermal_init(void)
>  
>  	result = thermal_register_governors();
>  	if (result)
> -		goto error;
> +		goto unregister_netlink;
>  
>  	result = class_register(&thermal_class);
>  	if (result)
> @@ -1621,6 +1621,8 @@ static int __init thermal_init(void)
>  
>  unregister_governors:
>  	thermal_unregister_governors();
> +unregister_netlink:
> +	thermal_netlink_exit();
>  error:
>  	ida_destroy(&thermal_tz_ida);
>  	ida_destroy(&thermal_cdev_ida);
> diff --git a/drivers/thermal/thermal_netlink.c
> b/drivers/thermal/thermal_netlink.c
> index 75943b06dbe7..08bc46c3ec7b 100644
> --- a/drivers/thermal/thermal_netlink.c
> +++ b/drivers/thermal/thermal_netlink.c
> @@ -699,3 +699,8 @@ int __init thermal_netlink_init(void)
>  {
>  	return genl_register_family(&thermal_gnl_family);
>  }
> +
> +void __init thermal_netlink_exit(void)
> +{
> +	genl_unregister_family(&thermal_gnl_family);
> +}
> diff --git a/drivers/thermal/thermal_netlink.h
> b/drivers/thermal/thermal_netlink.h
> index 1052f523188d..0a9987c3bc57 100644
> --- a/drivers/thermal/thermal_netlink.h
> +++ b/drivers/thermal/thermal_netlink.h
> @@ -13,6 +13,7 @@ struct thermal_genl_cpu_caps {
>  /* Netlink notification function */
>  #ifdef CONFIG_THERMAL_NETLINK
>  int __init thermal_netlink_init(void);
> +void __init thermal_netlink_exit(void);
>  int thermal_notify_tz_create(int tz_id, const char *name);
>  int thermal_notify_tz_delete(int tz_id);
>  int thermal_notify_tz_enable(int tz_id);
> @@ -115,4 +116,6 @@ static inline int
> thermal_genl_cpu_capability_event(int count, struct thermal_ge
>  	return 0;
>  }
>  
> +static inline void __init thermal_netlink_exit(void) {}
> +
>  #endif /* CONFIG_THERMAL_NETLINK */