2022-09-16 14:13:00

by Liu Shixin

[permalink] [raw]
Subject: [PATCH] pktcdvd: use DEFINE_SHOW_ATTRIBUTE to simplify pkt_debugfs

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.

Signed-off-by: Liu Shixin <[email protected]>
---
drivers/block/pktcdvd.c | 20 ++++----------------
1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 4cea3b08087e..fe113ac1c1b7 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -445,23 +445,11 @@ static void pkt_sysfs_cleanup(void)

*******************************************************************/

-static int pkt_debugfs_seq_show(struct seq_file *m, void *p)
+static int pkt_debugfs_show(struct seq_file *m, void *p)
{
return pkt_seq_show(m, p);
}
-
-static int pkt_debugfs_fops_open(struct inode *inode, struct file *file)
-{
- return single_open(file, pkt_debugfs_seq_show, inode->i_private);
-}
-
-static const struct file_operations debug_fops = {
- .open = pkt_debugfs_fops_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
+DEFINE_SHOW_ATTRIBUTE(pkt_debugfs);

static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
{
@@ -471,8 +459,8 @@ static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
if (!pd->dfs_d_root)
return;

- pd->dfs_f_info = debugfs_create_file("info", 0444,
- pd->dfs_d_root, pd, &debug_fops);
+ pd->dfs_f_info = debugfs_create_file("info", 0444, pd->dfs_d_root,
+ pd, &pkt_debugfs_fops);
}

static void pkt_debugfs_dev_remove(struct pktcdvd_device *pd)
--
2.25.1