usb: host: isp1362-hcd: convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/isp1362-hcd.c

@@ -2159,25 +2159,15 @@ static int isp1362_show(struct seq_file *s, void *unused)
 
 	return 0;
 }
-
-static int isp1362_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, isp1362_show, inode);
-}
-
-static const struct file_operations debug_ops = {
-	.open = isp1362_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(isp1362);
 
 /* expect just one isp1362_hcd per system */
 static void create_debug_file(struct isp1362_hcd *isp1362_hcd)
 {
 	isp1362_hcd->debug_file = debugfs_create_file("isp1362", S_IRUGO,
 						      usb_debug_root,
-						      isp1362_hcd, &debug_ops);
+						      isp1362_hcd,
+						      &isp1362_fops);
 }
 
 static void remove_debug_file(struct isp1362_hcd *isp1362_hcd)