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From: Cristian Marussi <cristian.marussi@arm.com>
To: "Ricardo B. Marliere" <ricardo@marliere.net>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 1/2] firmware: arm_ffa: Make ffa_bus_type const
Date: Tue, 13 Feb 2024 08:57:18 +0000	[thread overview]
Message-ID: <Zcsu7nj1MPzrES2x@pluto> (raw)
In-Reply-To: <20240211-bus_cleanup-firmware2-v1-1-1851c92c7be7@marliere.net>

On Sun, Feb 11, 2024 at 12:51:29PM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the ffa_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>

Thanks,
Cristian

> ---
>  drivers/firmware/arm_ffa/bus.c | 2 +-
>  include/linux/arm_ffa.h        | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/firmware/arm_ffa/bus.c b/drivers/firmware/arm_ffa/bus.c
> index 1c7940ba5539..2f557e90f2eb 100644
> --- a/drivers/firmware/arm_ffa/bus.c
> +++ b/drivers/firmware/arm_ffa/bus.c
> @@ -105,7 +105,7 @@ static struct attribute *ffa_device_attributes_attrs[] = {
>  };
>  ATTRIBUTE_GROUPS(ffa_device_attributes);
>  
> -struct bus_type ffa_bus_type = {
> +const struct bus_type ffa_bus_type = {
>  	.name		= "arm_ffa",
>  	.match		= ffa_device_match,
>  	.probe		= ffa_device_probe,
> diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
> index 3d0fde57ba90..c906f666ff5d 100644
> --- a/include/linux/arm_ffa.h
> +++ b/include/linux/arm_ffa.h
> @@ -209,7 +209,7 @@ bool ffa_device_is_valid(struct ffa_device *ffa_dev) { return false; }
>  #define module_ffa_driver(__ffa_driver)	\
>  	module_driver(__ffa_driver, ffa_register, ffa_unregister)
>  
> -extern struct bus_type ffa_bus_type;
> +extern const struct bus_type ffa_bus_type;
>  
>  /* FFA transport related */
>  struct ffa_partition_info {
> 
> -- 
> 2.43.0
> 

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WARNING: multiple messages have this Message-ID (diff)
From: Cristian Marussi <cristian.marussi@arm.com>
To: "Ricardo B. Marliere" <ricardo@marliere.net>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 1/2] firmware: arm_ffa: Make ffa_bus_type const
Date: Tue, 13 Feb 2024 08:57:18 +0000	[thread overview]
Message-ID: <Zcsu7nj1MPzrES2x@pluto> (raw)
In-Reply-To: <20240211-bus_cleanup-firmware2-v1-1-1851c92c7be7@marliere.net>

On Sun, Feb 11, 2024 at 12:51:29PM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the ffa_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>

Thanks,
Cristian

> ---
>  drivers/firmware/arm_ffa/bus.c | 2 +-
>  include/linux/arm_ffa.h        | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/firmware/arm_ffa/bus.c b/drivers/firmware/arm_ffa/bus.c
> index 1c7940ba5539..2f557e90f2eb 100644
> --- a/drivers/firmware/arm_ffa/bus.c
> +++ b/drivers/firmware/arm_ffa/bus.c
> @@ -105,7 +105,7 @@ static struct attribute *ffa_device_attributes_attrs[] = {
>  };
>  ATTRIBUTE_GROUPS(ffa_device_attributes);
>  
> -struct bus_type ffa_bus_type = {
> +const struct bus_type ffa_bus_type = {
>  	.name		= "arm_ffa",
>  	.match		= ffa_device_match,
>  	.probe		= ffa_device_probe,
> diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
> index 3d0fde57ba90..c906f666ff5d 100644
> --- a/include/linux/arm_ffa.h
> +++ b/include/linux/arm_ffa.h
> @@ -209,7 +209,7 @@ bool ffa_device_is_valid(struct ffa_device *ffa_dev) { return false; }
>  #define module_ffa_driver(__ffa_driver)	\
>  	module_driver(__ffa_driver, ffa_register, ffa_unregister)
>  
> -extern struct bus_type ffa_bus_type;
> +extern const struct bus_type ffa_bus_type;
>  
>  /* FFA transport related */
>  struct ffa_partition_info {
> 
> -- 
> 2.43.0
> 

  reply	other threads:[~2024-02-13  8:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-11 15:51 [PATCH 0/2] firmware: struct bus_type cleanup Ricardo B. Marliere
2024-02-11 15:51 ` Ricardo B. Marliere
2024-02-11 15:51 ` [PATCH 1/2] firmware: arm_ffa: Make ffa_bus_type const Ricardo B. Marliere
2024-02-11 15:51   ` Ricardo B. Marliere
2024-02-13  8:57   ` Cristian Marussi [this message]
2024-02-13  8:57     ` Cristian Marussi
2024-02-11 15:51 ` [PATCH 2/2] firmware: arm_scmi: make scmi_bus_type const Ricardo B. Marliere
2024-02-11 15:51   ` Ricardo B. Marliere
2024-02-13  8:57   ` Cristian Marussi
2024-02-13  8:57     ` Cristian Marussi
2024-02-12 10:46 ` [PATCH 0/2] firmware: struct bus_type cleanup Greg Kroah-Hartman
2024-02-12 10:46   ` Greg Kroah-Hartman
2024-02-22  7:38 ` Sudeep Holla
2024-02-22  7:38   ` Sudeep Holla
2024-02-22  9:07 ` Sudeep Holla
2024-02-22  9:07   ` Sudeep Holla

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