sysfs: Introducing binary attributes for struct class

Added dev_bin_attrs to struct class similar to existing dev_attrs.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 39 insertions, 2 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6ed645411c40..761359261589 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -338,6 +338,35 @@ static void device_remove_attributes(struct device *dev,
                         device_remove_file(dev, &attrs[i]);
 }
 
+static int device_add_bin_attributes(struct device *dev,
+                                     struct bin_attribute *attrs)
+{
+        int error = 0;
+        int i;
+
+        if (attrs) {
+                for (i = 0; attr_name(attrs[i]); i++) {
+                        error = device_create_bin_file(dev, &attrs[i]);
+                        if (error)
+                                break;
+                }
+                if (error)
+                        while (--i >= 0)
+                                device_remove_bin_file(dev, &attrs[i]);
+        }
+        return error;
+}
+
+static void device_remove_bin_attributes(struct device *dev,
+                                         struct bin_attribute *attrs)
+{
+        int i;
+
+        if (attrs)
+                for (i = 0; attr_name(attrs[i]); i++)
+                        device_remove_bin_file(dev, &attrs[i]);
+}
+
 static int device_add_groups(struct device *dev,
                              const struct attribute_group **groups)
 {
@@ -378,12 +407,15 @@ static int device_add_attrs(struct device *dev)
                 error = device_add_attributes(dev, class->dev_attrs);
                 if (error)
                         return error;
+                error = device_add_bin_attributes(dev, class->dev_bin_attrs);
+                if (error)
+                        goto err_remove_class_attrs;
         }
 
         if (type) {
                 error = device_add_groups(dev, type->groups);
                 if (error)
-                        goto err_remove_class_attrs;
+                        goto err_remove_class_bin_attrs;
         }
 
         error = device_add_groups(dev, dev->groups);
@@ -395,6 +427,9 @@ static int device_add_attrs(struct device *dev)
  err_remove_type_groups:
         if (type)
                 device_remove_groups(dev, type->groups);
+ err_remove_class_bin_attrs:
+        if (class)
+                device_remove_bin_attributes(dev, class->dev_bin_attrs);
  err_remove_class_attrs:
         if (class)
                 device_remove_attributes(dev, class->dev_attrs);
@@ -412,8 +447,10 @@ static void device_remove_attrs(struct device *dev)
         if (type)
                 device_remove_groups(dev, type->groups);
 
-        if (class)
+        if (class) {
                 device_remove_attributes(dev, class->dev_attrs);
+                device_remove_bin_attributes(dev, class->dev_bin_attrs);
+        }
 }