Re: [PATCH] scsi: Make scsi_bus_type const

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On Sun, Feb 11, 2024 at 12:33:50PM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the scsi_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Remove some extraneous whitespace.
> 
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>
> ---
>  drivers/scsi/scsi_priv.h  | 6 +++---
>  drivers/scsi/scsi_sysfs.c | 6 +++---
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
> index 1fbfe1b52c9f..6a02114776b3 100644
> --- a/drivers/scsi/scsi_priv.h
> +++ b/drivers/scsi/scsi_priv.h
> @@ -54,7 +54,7 @@ void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
>  void scsi_log_send(struct scsi_cmnd *cmd);
>  void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
>  #else
> -static inline void scsi_log_send(struct scsi_cmnd *cmd) 
> +static inline void scsi_log_send(struct scsi_cmnd *cmd)

Why is this line changed?

>  	{ };
>  static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
>  	{ };
> @@ -156,7 +156,7 @@ extern void scsi_sysfs_device_initialize(struct scsi_device *);
>  extern struct scsi_transport_template blank_transport_template;
>  extern void __scsi_remove_device(struct scsi_device *);
>  
> -extern struct bus_type scsi_bus_type;
> +extern const struct bus_type scsi_bus_type;
>  extern const struct attribute_group *scsi_shost_groups[];
>  
>  /* scsi_netlink.c */
> @@ -197,7 +197,7 @@ struct bsg_device *scsi_bsg_register_queue(struct scsi_device *sdev);
>  
>  extern int scsi_device_max_queue_depth(struct scsi_device *sdev);
>  
> -/* 
> +/*

And this?


>   * internal scsi timeout functions: for use by mid-layer and transport
>   * classes.
>   */
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index 24f6eefb6803..7f1fede8ef5d 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -549,7 +549,7 @@ static int scsi_bus_uevent(const struct device *dev, struct kobj_uevent_env *env
>  	return 0;
>  }
>  
> -struct bus_type scsi_bus_type = {
> +const struct bus_type scsi_bus_type = {
>          .name		= "scsi",
>          .match		= scsi_bus_match,
>  	.uevent		= scsi_bus_uevent,
> @@ -656,7 +656,7 @@ static int scsi_sdev_check_buf_bit(const char *buf)
>  			return 1;
>  		else if (buf[0] == '0')
>  			return 0;
> -		else 
> +		else

And this, please be more careful, it looks like your editor stripped out
all trailing whitespace, which is fine for new files, but not for
existing ones.

thanks,

greg k-h




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