linux-kernel - [PATCH 1/2] driver core: component: remove dentry pointer in "struct master"

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 for Android: free password hash cracker in your pocket

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

Date:   Tue, 16 Feb 2021 15:23:59 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: [PATCH 1/2] driver core: component: remove dentry pointer in "struct master"

There is no need to keep around a pointer to a dentry when all it is
used for is to remove the debugfs file when tearing things down.  As the
name is simple, have debugfs look up the dentry when removing things,
keeping the logic much simpler.

Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/base/component.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/base/component.c b/drivers/base/component.c
index dcfbe7251dc4..272ba42392f0 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -65,7 +65,6 @@ struct master {
 	const struct component_master_ops *ops;
 	struct device *dev;
 	struct component_match *match;
-	struct dentry *dentry;
 };
 
 struct component {
@@ -125,15 +124,13 @@ core_initcall(component_debug_init);
 
 static void component_master_debugfs_add(struct master *m)
 {
-	m->dentry = debugfs_create_file(dev_name(m->dev), 0444,
-					component_debugfs_dir,
-					m, &component_devices_fops);
+	debugfs_create_file(dev_name(m->dev), 0444, component_debugfs_dir, m,
+			    &component_devices_fops);
 }
 
 static void component_master_debugfs_del(struct master *m)
 {
-	debugfs_remove(m->dentry);
-	m->dentry = NULL;
+	debugfs_remove(debugfs_lookup(dev_name(m->dev), component_debugfs_dir));
 }
 
 #else
-- 
2.30.1