[PATCH] Driver core: change device_attribute callbacks

This patch adds the device_attribute paramerter to the
device_attribute store and show sysfs callback functions, and passes a
reference to the attribute when the callbacks are called.

Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 6 insertions, 4 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 1d8c7790b55..86d79755fbf 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -39,7 +39,7 @@ dev_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
         ssize_t ret = -EIO;
 
         if (dev_attr->show)
-                ret = dev_attr->show(dev, buf);
+                ret = dev_attr->show(dev, dev_attr, buf);
         return ret;
 }
 
@@ -52,7 +52,7 @@ dev_attr_store(struct kobject * kobj, struct attribute * attr,
         ssize_t ret = -EIO;
 
         if (dev_attr->store)
-                ret = dev_attr->store(dev, buf, count);
+                ret = dev_attr->store(dev, dev_attr, buf, count);
         return ret;
 }
 
diff --git a/include/linux/device.h b/include/linux/device.h
index 91aac349b9a..7b781a72b29 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -335,8 +335,10 @@ extern void driver_attach(struct device_driver * drv);
 
 struct device_attribute {
         struct attribute        attr;
-        ssize_t (*show)(struct device * dev, char * buf);
-        ssize_t (*store)(struct device * dev, const char * buf, size_t count);
+        ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+                         const char *buf, size_t count);
 };
 
 #define DEVICE_ATTR(_name,_mode,_show,_store) \