s390/ctcm: switch to ccwgroup_create_dev
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>
diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c
index 650aec1..0c27ae7 100644
--- a/drivers/s390/net/ctcm_sysfs.c
+++ b/drivers/s390/net/ctcm_sysfs.c
@@ -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 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 @@
&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,
+};