drivers: base: component: fix memory leak with using debugfs_lookup()

[ Upstream commit 8deb87b1e810dd558371e88ffd44339fbef27870 ]

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230202141621.2296458-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/base/component.c b/drivers/base/component.c
index 870485cbbb87cc6a13a278448e6b9ab5841a25ac..058f1a2cb2a9a97d07f35fefc22186737c2be843 100644 (file)
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -130,7 +130,7 @@ static void component_master_debugfs_add(struct master *m)
 
 static void component_master_debugfs_del(struct master *m)
 {
-       debugfs_remove(debugfs_lookup(dev_name(m->parent), component_debugfs_dir));
+       debugfs_lookup_and_remove(dev_name(m->parent), component_debugfs_dir);
 }
 
 #else