[S390] Use dev->groups for adding/removing the subchannel attribute group.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 11 insertions, 11 deletions

diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 0bf716619378..4c81d890791e 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -137,6 +137,7 @@ css_register_subchannel(struct subchannel *sch)
         sch->dev.parent = &css[0]->device;
         sch->dev.bus = &css_bus_type;
         sch->dev.release = &css_subchannel_release;
+        sch->dev.groups = subch_attr_groups;
 
         /* make it known to the system */
         ret = css_sch_device_register(sch);
@@ -146,10 +147,6 @@ css_register_subchannel(struct subchannel *sch)
                 return ret;
         }
         css_get_ssd_info(sch);
-        ret = subchannel_add_files(&sch->dev);
-        if (ret)
-                printk(KERN_WARNING "%s: could not add attributes to %s\n",
-                       __func__, sch->dev.bus_id);
         return ret;
 }
 
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 71fe380f86f6..3464c5b875c4 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -195,4 +195,5 @@ extern struct workqueue_struct *slow_path_wq;
 extern struct work_struct slow_path_work;
 
 int subchannel_add_files (struct device *);
+extern struct attribute_group *subch_attr_groups[];
 #endif
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 7fe1ccdc7812..803579053c2f 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -235,9 +235,11 @@ chpids_show (struct device * dev, struct device_attribute *attr, char * buf)
         ssize_t ret = 0;
         int chp;
 
-        for (chp = 0; chp < 8; chp++)
-                ret += sprintf (buf+ret, "%02x ", ssd->chpid[chp]);
-
+        if (ssd)
+                for (chp = 0; chp < 8; chp++)
+                        ret += sprintf (buf+ret, "%02x ", ssd->chpid[chp]);
+        else
+                ret += sprintf (buf, "n/a");
         ret += sprintf (buf+ret, "\n");
         return min((ssize_t)PAGE_SIZE, ret);
 }
@@ -531,10 +533,10 @@ static struct attribute_group subch_attr_group = {
         .attrs = subch_attrs,
 };
 
-int subchannel_add_files (struct device *dev)
-{
-        return sysfs_create_group(&dev->kobj, &subch_attr_group);
-}
+struct attribute_group *subch_attr_groups[] = {
+        &subch_attr_group,
+        NULL,
+};
 
 static struct attribute * ccwdev_attrs[] = {
         &dev_attr_devtype.attr,