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_main.c b/drivers/s390/net/ctcm_main.c
index 11f3b07..abb84c3 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -1296,6 +1296,11 @@
}
+static const struct device_type ctcm_devtype = {
+ .name = "ctcm",
+ .groups = ctcm_attr_groups,
+};
+
/**
* Add ctcm specific attributes.
* Add ctcm private data.
@@ -1307,7 +1312,6 @@
static int ctcm_probe_device(struct ccwgroup_device *cgdev)
{
struct ctcm_priv *priv;
- int rc;
CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
"%s %p",
@@ -1324,17 +1328,11 @@
put_device(&cgdev->dev);
return -ENOMEM;
}
-
- rc = ctcm_add_files(&cgdev->dev);
- if (rc) {
- kfree(priv);
- put_device(&cgdev->dev);
- return rc;
- }
priv->buffer_size = CTCM_BUFSIZE_DEFAULT;
cgdev->cdev[0]->handler = ctcm_irq_handler;
cgdev->cdev[1]->handler = ctcm_irq_handler;
dev_set_drvdata(&cgdev->dev, priv);
+ cgdev->dev.type = &ctcm_devtype;
return 0;
}
@@ -1611,11 +1609,6 @@
goto out_dev;
}
- if (ctcm_add_attributes(&cgdev->dev)) {
- result = -ENODEV;
- goto out_unregister;
- }
-
strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name));
dev_info(&dev->dev,
@@ -1629,8 +1622,6 @@
priv->channel[CTCM_WRITE]->id, priv->protocol);
return 0;
-out_unregister:
- unregister_netdev(dev);
out_dev:
ctcm_free_netdevice(dev);
out_ccw2:
@@ -1669,7 +1660,6 @@
/* Close the device */
ctcm_close(dev);
dev->flags &= ~IFF_RUNNING;
- ctcm_remove_attributes(&cgdev->dev);
channel_free(priv->channel[CTCM_READ]);
} else
dev = NULL;
@@ -1711,7 +1701,6 @@
if (cgdev->state == CCWGROUP_ONLINE)
ctcm_shutdown_device(cgdev);
- ctcm_remove_files(&cgdev->dev);
dev_set_drvdata(&cgdev->dev, NULL);
kfree(priv);
put_device(&cgdev->dev);
@@ -1780,7 +1769,7 @@
},
.max_slaves = 2,
.driver_id = 0xC3E3C3D4, /* CTCM */
- .probe = ctcm_probe_device,
+ .setup = ctcm_probe_device,
.remove = ctcm_remove_device,
.set_online = ctcm_new_device,
.set_offline = ctcm_shutdown_device,
@@ -1789,18 +1778,15 @@
.restore = ctcm_pm_resume,
};
-static ssize_t
-ctcm_driver_group_store(struct device_driver *ddrv, const char *buf,
- size_t count)
+static ssize_t ctcm_driver_group_store(struct device_driver *ddrv,
+ const char *buf, size_t count)
{
int err;
- err = ccwgroup_create_from_string(ctcm_root_dev,
- ctcm_group_driver.driver_id,
- &ctcm_ccw_driver, 2, buf);
+ err = ccwgroup_create_dev(ctcm_root_dev, ctcm_group_driver.driver_id,
+ &ctcm_group_driver, 2, buf);
return err ? err : count;
}
-
static DRIVER_ATTR(group, 0200, NULL, ctcm_driver_group_store);
static struct attribute *ctcm_group_attrs[] = {
diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h
index 24d5215..b9056a5 100644
--- a/drivers/s390/net/ctcm_main.h
+++ b/drivers/s390/net/ctcm_main.h
@@ -225,13 +225,7 @@
int ctcm_open(struct net_device *dev);
int ctcm_close(struct net_device *dev);
-/*
- * prototypes for non-static sysfs functions
- */
-int ctcm_add_attributes(struct device *dev);
-void ctcm_remove_attributes(struct device *dev);
-int ctcm_add_files(struct device *dev);
-void ctcm_remove_files(struct device *dev);
+extern const struct attribute_group *ctcm_attr_groups[];
/*
* Compatibility macros for busy handling
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,
+};