cpufreq: s3c24xx: Change to use DEFINE_SHOW_ATTRIBUTE macro

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/s3c24xx-cpufreq-debugfs.c

@@ -63,18 +63,7 @@ static int board_show(struct seq_file *seq, void *p)
 	return 0;
 }
 
-static int fops_board_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, board_show, NULL);
-}
-
-static const struct file_operations fops_board = {
-	.open		= fops_board_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
+DEFINE_SHOW_ATTRIBUTE(board);
 
 static int info_show(struct seq_file *seq, void *p)
 {
@@ -105,18 +94,7 @@ static int info_show(struct seq_file *seq, void *p)
 	return 0;
 }
 
-static int fops_info_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, info_show, NULL);
-}
-
-static const struct file_operations fops_info = {
-	.open		= fops_info_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
+DEFINE_SHOW_ATTRIBUTE(info);
 
 static int io_show(struct seq_file *seq, void *p)
 {
@@ -162,19 +140,7 @@ static int io_show(struct seq_file *seq, void *p)
 	return 0;
 }
 
-static int fops_io_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, io_show, NULL);
-}
-
-static const struct file_operations fops_io = {
-	.open		= fops_io_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
-
+DEFINE_SHOW_ATTRIBUTE(io);
 
 static int __init s3c_freq_debugfs_init(void)
 {
@@ -185,13 +151,13 @@ static int __init s3c_freq_debugfs_init(void)
 	}
 
 	dbgfs_file_io = debugfs_create_file("io-timing", S_IRUGO, dbgfs_root,
-					    NULL, &fops_io);
+					    NULL, &io_fops);
 
 	dbgfs_file_info = debugfs_create_file("info", S_IRUGO, dbgfs_root,
-					      NULL, &fops_info);
+					      NULL, &info_fops);
 
 	dbgfs_file_board = debugfs_create_file("board", S_IRUGO, dbgfs_root,
-					       NULL, &fops_board);
+					       NULL, &board_fops);
 
 	return 0;
 }