linux-kernel - Re: [PATCH v7 6/7] scsi: aic94xx: Add libsas SATA sysfs attributes group

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Date: Wed, 6 Mar 2024 11:55:48 +0100
From: Niklas Cassel <cassel@...nel.org>
To: Igor Pylypiv <ipylypiv@...gle.com>
Cc: Damien Le Moal <dlemoal@...nel.org>,
	John Garry <john.g.garry@...cle.com>,
	Jason Yan <yanaijie@...wei.com>,
	"James E.J. Bottomley" <jejb@...ux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Jack Wang <jinpu.wang@...ud.ionos.com>,
	Hannes Reinecke <hare@...e.de>,
	Xiang Chen <chenxiang66@...ilicon.com>,
	Artur Paszkiewicz <artur.paszkiewicz@...el.com>,
	Bart Van Assche <bvanassche@....org>,
	TJ Adams <tadamsjr@...gle.com>, linux-ide@...r.kernel.org,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 6/7] scsi: aic94xx: Add libsas SATA sysfs attributes
 group

On Tue, Mar 05, 2024 at 05:22:25PM -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@...cle.com>
> Reviewed-by: Damien Le Moal <dlemoal@...nel.org>
> Reviewed-by: Jason Yan <yanaijie@...wei.com>
> Signed-off-by: Igor Pylypiv <ipylypiv@...gle.com>
> ---
>  drivers/scsi/aic94xx/aic94xx_init.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
> index 8a3340d8d7ad..ccccd0eb6275 100644
> --- a/drivers/scsi/aic94xx/aic94xx_init.c
> +++ b/drivers/scsi/aic94xx/aic94xx_init.c
> @@ -14,6 +14,7 @@
>  #include <linux/firmware.h>
>  #include <linux/slab.h>
>  
> +#include <scsi/sas_ata.h>
>  #include <scsi/scsi_host.h>
>  
>  #include "aic94xx.h"
> @@ -34,6 +35,7 @@ MODULE_PARM_DESC(use_msi, "\n"
>  static struct scsi_transport_template *aic94xx_transport_template;
>  static int asd_scan_finished(struct Scsi_Host *, unsigned long);
>  static void asd_scan_start(struct Scsi_Host *);
> +static const struct attribute_group *asd_sdev_groups[];
>  
>  static const struct scsi_host_template aic94xx_sht = {
>  	.module			= THIS_MODULE,
> @@ -60,6 +62,7 @@ static const struct scsi_host_template aic94xx_sht = {
>  	.compat_ioctl		= sas_ioctl,
>  #endif
>  	.track_queue_depth	= 1,
> +	.sdev_groups		= asd_sdev_groups,
>  };
>  
>  static int asd_map_memio(struct asd_ha_struct *asd_ha)
> @@ -951,6 +954,11 @@ static void asd_remove_driver_attrs(struct device_driver *driver)
>  	driver_remove_file(driver, &driver_attr_version);
>  }
>  
> +static const struct attribute_group *asd_sdev_groups[] = {
> +	&sas_ata_sdev_attr_group,
> +	NULL
> +};

If you move this in front of:
static const struct scsi_host_template aic94xx_sht = { };

I think that you can remove the forward declaration.


> +
>  static struct sas_domain_function_template aic94xx_transport_functions = {
>  	.lldd_dev_found		= asd_dev_found,
>  	.lldd_dev_gone		= asd_dev_gone,
> -- 
> 2.44.0.278.ge034bb2e1d-goog
>