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s390/ctcm: switch to ccwgroup_create_dev

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Switch to the new ccwgroup_create_dev interface. Also wrap device
attributes in a struct device_type and let the driver core create
these attributes automagically.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott
2012-05-15 17:54:12 +02:00
committed by Martin Schwidefsky
parent b7a610f7b4
commit 20cdffa437
3 changed files with 22 additions and 59 deletions
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37
drivers/s390/net/ctcm_sysfs.c
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@@ -13,6 +13,7 @@
#define KMSG_COMPONENT "ctcm"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/slab.h>
#include "ctcm_main.h"
@@ -108,10 +109,12 @@ static void ctcm_print_statistics(struct ctcm_priv *priv)
}
static ssize_t stats_show(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr, char *buf)
{
struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
struct ctcm_priv *priv = dev_get_drvdata(dev);
if (!priv)
if (!priv || gdev->state != CCWGROUP_ONLINE)
return -ENODEV;
ctcm_print_statistics(priv);
return sprintf(buf, "0\n");
@@ -190,34 +193,14 @@ static struct attribute *ctcm_attr[] = {
&dev_attr_protocol.attr,
&dev_attr_type.attr,
&dev_attr_buffer.attr,
&dev_attr_stats.attr,
NULL,
};
static struct attribute_group ctcm_attr_group = {
.attrs = ctcm_attr,
};
int ctcm_add_attributes(struct device *dev)
{
int rc;
rc = device_create_file(dev, &dev_attr_stats);
return rc;
}
void ctcm_remove_attributes(struct device *dev)
{
device_remove_file(dev, &dev_attr_stats);
}
int ctcm_add_files(struct device *dev)
{
return sysfs_create_group(&dev->kobj, &ctcm_attr_group);
}
void ctcm_remove_files(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &ctcm_attr_group);
}
const struct attribute_group *ctcm_attr_groups[] = {
&ctcm_attr_group,
NULL,
};