linux-kernel - [PATCH -next] pktcdvd: Convert to DEFINE_SHOW

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20200716090601.13945-1-miaoqinglang@huawei.com>
Date:   Thu, 16 Jul 2020 17:06:01 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jens Axboe <axboe@...nel.dk>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] pktcdvd: Convert to DEFINE_SHOW_ATTRIBUTE

From: Liu Shixin <liushixin2@...wei.com>

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
 drivers/block/pktcdvd.c | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index c81f63714..6a79770db 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -452,23 +452,12 @@ 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_iter		= seq_read_iter,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
+DEFINE_SHOW_ATTRIBUTE(pkt_debugfs);
 
 static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
 {
@@ -479,7 +468,7 @@ static void pkt_debugfs_dev_new(struct pktcdvd_device *pd)
 		return;
 
 	pd->dfs_f_info = debugfs_create_file("info", 0444,
-					     pd->dfs_d_root, pd, &debug_fops);
+					     pd->dfs_d_root, pd, &pkt_debugfs_fops);
 }
 
 static void pkt_debugfs_dev_remove(struct pktcdvd_device *pd)
-- 
2.17.1