Merge branch 'linux-2.6'

[linux-2.6-omap-h63xx.git] / fs / sysfs / file.c

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index db0413a411d61e57fda9ef39e9b36ac37dd2a6b2..b502c7197ec063777d90af4c49f038e95acd0c9e 100644 (file)
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -13,8 +13,7 @@
 
 #include "sysfs.h"
 
-#define to_subsys(k) container_of(k,struct subsystem,kset.kobj)
-#define to_sattr(a) container_of(a,struct subsys_attribute,attr)
+#define to_sattr(a) container_of(a,struct subsys_attribute, attr)
 
 /*
  * Subsystem file operations.
@@ -24,12 +23,12 @@
 static ssize_t 
 subsys_attr_show(struct kobject * kobj, struct attribute * attr, char * page)
 {
-       struct subsystem * s = to_subsys(kobj);
+       struct kset *kset = to_kset(kobj);
        struct subsys_attribute * sattr = to_sattr(attr);
        ssize_t ret = -EIO;
 
        if (sattr->show)
-               ret = sattr->show(s,page);
+               ret = sattr->show(kset, page);
        return ret;
 }
 
@@ -37,12 +36,12 @@ static ssize_t
 subsys_attr_store(struct kobject * kobj, struct attribute * attr, 
                  const char * page, size_t count)
 {
-       struct subsystem * s = to_subsys(kobj);
+       struct kset *kset = to_kset(kobj);
        struct subsys_attribute * sattr = to_sattr(attr);
        ssize_t ret = -EIO;
 
        if (sattr->store)
-               ret = sattr->store(s,page,count);
+               ret = sattr->store(kset, page, count);
        return ret;
 }
 
@@ -112,36 +111,6 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer
        return ret;
 }
 
-
-/**
- *     flush_read_buffer - push buffer to userspace.
- *     @buffer:        data buffer for file.
- *     @buf:           user-passed buffer.
- *     @count:         number of bytes requested.
- *     @ppos:          file position.
- *
- *     Copy the buffer we filled in fill_read_buffer() to userspace.
- *     This is done at the reader's leisure, copying and advancing 
- *     the amount they specify each time.
- *     This may be called continuously until the buffer is empty.
- */
-static int flush_read_buffer(struct sysfs_buffer * buffer, char __user * buf,
-                            size_t count, loff_t * ppos)
-{
-       int error;
-
-       if (*ppos > buffer->count)
-               return 0;
-
-       if (count > (buffer->count - *ppos))
-               count = buffer->count - *ppos;
-
-       error = copy_to_user(buf,buffer->page + *ppos,count);
-       if (!error)
-               *ppos += count;
-       return error ? -EFAULT : count;
-}
-
 /**
  *     sysfs_read_file - read an attribute. 
  *     @file:  file pointer.
@@ -178,7 +147,8 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
        }
        pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
                 __FUNCTION__, count, *ppos, buffer->page);
-       retval = flush_read_buffer(buffer,buf,count,ppos);
+       retval = simple_read_from_buffer(buf, count, ppos, buffer->page,
+                                        buffer->count);
 out:
        up(&buffer->sem);
        return retval;