Re: [PATCH] scsi: Make scsi_bus_type const

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Hi Greg,

On 12 Feb 11:45, Greg Kroah-Hartman wrote:
> 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.

I saw some patches did this, thought it would ok to add.

> > 
> > 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.

In fact it took me a while to figure this out, as I don't have
format-on-save enabled. It's actually due to the recently added
.editorconfig file to the tree. I can send it without the whitespace
changes if that's better, but it's there in the changelog. Please let me
know.

Thanks for reviewing,
-	Ricardo.



> 
> thanks,
> 
> greg k-h




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