[PATCH -next v2] drivers: visorbus: Convert to DEFINE_SHOW_ATTRIBUTE

[Qinglang Miao]

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Qinglang Miao <miaoqinglang@xxxxxxxxxx>
---
v2: based on linux-next(20200917), and can be applied to
    mainline cleanly now.

 drivers/visorbus/visorbus_main.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/visorbus/visorbus_main.c b/drivers/visorbus/visorbus_main.c
index 152fd29f0..b5417f1e7 100644
--- a/drivers/visorbus/visorbus_main.c
+++ b/drivers/visorbus/visorbus_main.c
@@ -471,18 +471,7 @@ static int bus_info_debugfs_show(struct seq_file *seq, void *v)
 	return 0;
 }
 
-static int bus_info_debugfs_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, bus_info_debugfs_show, inode->i_private);
-}
-
-static const struct file_operations bus_info_debugfs_fops = {
-	.owner = THIS_MODULE,
-	.open = bus_info_debugfs_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(bus_info_debugfs);
 
 static void dev_periodic_work(struct timer_list *t)
 {
-- 
2.23.0