linux-kernel - Re: [PATCH 26/36] SCSI: st: convert class code to use dev

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Date:	Tue, 30 Jul 2013 18:27:06 +0000
From:	James Bottomley <jbottomley@...allels.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kai Mäkisara <Kai.Makisara@...umbus.fi>,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH 26/36] SCSI: st: convert class code to use dev_groups

Adding linux-scsi to cc.

James

On Wed, 2013-07-24 at 15:05 -0700, Greg Kroah-Hartman wrote:
> The dev_attrs field of struct class is going away soon, dev_groups
> should be used instead.  This converts the scsi tape class code to use
> the correct field.
> 
> Cc: Kai Mäkisara <Kai.Makisara@...umbus.fi>
> Cc: James E.J. Bottomley <JBottomley@...allels.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
> 
> James, feel free to take this through your tree, or ACK it and I can
> take it through mine.
> 
>  drivers/scsi/st.c | 27 ++++++++++++++++-----------
>  1 file changed, 16 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
> index 2a32036a..ff44b3c2 100644
> --- a/drivers/scsi/st.c
> +++ b/drivers/scsi/st.c
> @@ -82,7 +82,7 @@ static int try_rdio = 1;
>  static int try_wdio = 1;
>  
>  static struct class st_sysfs_class;
> -static struct device_attribute st_dev_attrs[];
> +static const struct attribute_group *st_dev_groups[];
>  
>  MODULE_AUTHOR("Kai Makisara");
>  MODULE_DESCRIPTION("SCSI tape (st) driver");
> @@ -4274,7 +4274,7 @@ static void scsi_tape_release(struct kref *kref)
>  
>  static struct class st_sysfs_class = {
>  	.name = "scsi_tape",
> -	.dev_attrs = st_dev_attrs,
> +	.dev_groups = st_dev_groups,
>  };
>  
>  static int __init init_st(void)
> @@ -4408,6 +4408,7 @@ defined_show(struct device *dev, struct device_attribute *attr, char *buf)
>  	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->defined);
>  	return l;
>  }
> +static DEVICE_ATTR_RO(defined);
>  
>  static ssize_t
>  default_blksize_show(struct device *dev, struct device_attribute *attr,
> @@ -4419,7 +4420,7 @@ default_blksize_show(struct device *dev, struct device_attribute *attr,
>  	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_blksize);
>  	return l;
>  }
> -
> +static DEVICE_ATTR_RO(default_blksize);
>  
>  static ssize_t
>  default_density_show(struct device *dev, struct device_attribute *attr,
> @@ -4433,6 +4434,7 @@ default_density_show(struct device *dev, struct device_attribute *attr,
>  	l = snprintf(buf, PAGE_SIZE, fmt, STm->default_density);
>  	return l;
>  }
> +static DEVICE_ATTR_RO(default_density);
>  
>  static ssize_t
>  default_compression_show(struct device *dev, struct device_attribute *attr,
> @@ -4444,6 +4446,7 @@ default_compression_show(struct device *dev, struct device_attribute *attr,
>  	l = snprintf(buf, PAGE_SIZE, "%d\n", STm->default_compression - 1);
>  	return l;
>  }
> +static DEVICE_ATTR_RO(default_compression);
>  
>  static ssize_t
>  options_show(struct device *dev, struct device_attribute *attr, char *buf)
> @@ -4472,15 +4475,17 @@ options_show(struct device *dev, struct device_attribute *attr, char *buf)
>  	l = snprintf(buf, PAGE_SIZE, "0x%08x\n", options);
>  	return l;
>  }
> -
> -static struct device_attribute st_dev_attrs[] = {
> -	__ATTR_RO(defined),
> -	__ATTR_RO(default_blksize),
> -	__ATTR_RO(default_density),
> -	__ATTR_RO(default_compression),
> -	__ATTR_RO(options),
> -	__ATTR_NULL,
> +static DEVICE_ATTR_RO(options);
> +
> +static struct attribute *st_dev_attrs[] = {
> +	&dev_attr_defined.attr,
> +	&dev_attr_default_blksize.attr,
> +	&dev_attr_default_density.attr,
> +	&dev_attr_default_compression.attr,
> +	&dev_attr_options.attr,
> +	NULL,
>  };
> +ATTRIBUTE_GROUPS(st_dev);
>  
>  /* The following functions may be useful for a larger audience. */
>  static int sgl_map_user_pages(struct st_buffer *STbp,


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