Re: [PATCH v7 4/7] scsi: mvsas: Add libsas SATA sysfs attributes group

[Igor Pylypiv <ipylypiv@google.com>]

On Thu, Mar 07, 2024 at 10:52:08AM +0100, Niklas Cassel wrote:
> On Wed, Mar 06, 2024 at 01:13:22PM -0800, Igor Pylypiv wrote:
> > On Wed, Mar 06, 2024 at 11:55:19AM +0100, Niklas Cassel wrote:
> > > On Tue, Mar 05, 2024 at 05:22:23PM -0800, Igor Pylypiv wrote:
> > > > The added sysfs attributes group enables the configuration of NCQ Priority
> > > > feature for HBAs that rely on libsas to manage SATA devices.
> > > > 
> > > > Reviewed-by: John Garry <john.g.garry@oracle.com>
> > > > Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
> > > > Reviewed-by: Jason Yan <yanaijie@huawei.com>
> > > > Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
> > > > ---
> > > >  drivers/scsi/mvsas/mv_init.c | 7 +++++++
> > > >  1 file changed, 7 insertions(+)
> > > > 
> > > > diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
> > > > index 43ebb331e216..f1090bb5f2c9 100644
> > > > --- a/drivers/scsi/mvsas/mv_init.c
> > > > +++ b/drivers/scsi/mvsas/mv_init.c
> > > > @@ -26,6 +26,7 @@ static const struct mvs_chip_info mvs_chips[] = {
> > > >  };
> > > >  
> > > >  static const struct attribute_group *mvst_host_groups[];
> > > > +static const struct attribute_group *mvst_sdev_groups[];
> > > 
> > > I think you can remove this line.
> > >
> > I kept the forward declaration to match the mvst_host_groups style.
> > 
> > Perhaps mvs_sht can be moved to the bottom of the file so that all forward
> > declarations can be removed? This can be done in a separate cleanup patch
> > series.
> > 
> > I'll keep this and aic94xx patches as-is, unless there are objections.
> 
> Usually, you first do the cleanup, then you do your changes.
> (That way, there are fewer lines changed, since each patch is smaller.)
> 

Ack. I think it makes sense to wait for the John's patch series
"Add LIBSAS_SHT_BASE for libsas" to get merged first:
https://lore.kernel.org/linux-scsi/20240305122452.340471-1-john.g.garry@oracle.com/T/#t

This way John woudn't need to re-do the patches on top of the moved sht.
Since the LIBSAS_SHT_BASE reduces the line count the following cleanup
patches will have fewer lines changed.

> But no objection from me.
> 
> 
> Kind regards,
> Niklas
> 
> 
> > 
> > > 
> > > >  
> > > >  #define SOC_SAS_NUM 2
> > > >  
> > > > @@ -53,6 +54,7 @@ static const struct scsi_host_template mvs_sht = {
> > > >  	.compat_ioctl		= sas_ioctl,
> > > >  #endif
> > > >  	.shost_groups		= mvst_host_groups,
> > > > +	.sdev_groups		= mvst_sdev_groups,
> > > >  	.track_queue_depth	= 1,
> > > >  };
> > > >  
> > > > @@ -779,6 +781,11 @@ static struct attribute *mvst_host_attrs[] = {
> > > >  
> > > >  ATTRIBUTE_GROUPS(mvst_host);
> > > >  
> > > > +static const struct attribute_group *mvst_sdev_groups[] = {
> > > > +	&sas_ata_sdev_attr_group,
> > > > +	NULL
> > > > +};
> > > 
> > > ..and move these lines up to be after:
> > > static const struct attribute_group *mvst_host_groups[];
> > > 
> > > 
> > > > +
> > > >  module_init(mvs_init);
> > > >  module_exit(mvs_exit);
> > > >  
> > > > -- 
> > > > 2.44.0.278.ge034bb2e1d-goog
> > > >