dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <[e-mail]>
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/mic_x100_dma.c

···
 }
 
 /* DEBUGFS CODE */
-static int mic_dma_reg_seq_show(struct seq_file *s, void *pos)
+static int mic_dma_reg_show(struct seq_file *s, void *pos)
 {
 	struct mic_dma_device *mic_dma_dev = s->private;
 	int i, chan_num, first_chan = mic_dma_dev->start_ch;
···
 	return 0;
 }
 
-static int mic_dma_reg_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, mic_dma_reg_seq_show, inode->i_private);
-}
-
-static int mic_dma_reg_debug_release(struct inode *inode, struct file *file)
-{
-	return single_release(inode, file);
-}
-
-static const struct file_operations mic_dma_reg_ops = {
-	.owner   = THIS_MODULE,
-	.open    = mic_dma_reg_debug_open,
-	.read    = seq_read,
-	.llseek  = seq_lseek,
-	.release = mic_dma_reg_debug_release
-};
+DEFINE_SHOW_ATTRIBUTE(mic_dma_reg);
 
 /* Debugfs parent dir */
 static struct dentry *mic_dma_dbg;
···
 		if (mic_dma_dev->dbg_dir)
 			debugfs_create_file("mic_dma_reg", 0444,
 					    mic_dma_dev->dbg_dir, mic_dma_dev,
-					    &mic_dma_reg_ops);
+					    &mic_dma_reg_fops);
 	}
 	return 0;
 }