[PATCH] drivers: base: power: fix memory leak with using debugfs_lookup()

[Greg Kroah-Hartman]

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@xxxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxx>
Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: linux-pm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/base/power/domain.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 967bcf9d415e..6097644ebdc5 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -220,13 +220,10 @@ static void genpd_debug_add(struct generic_pm_domain *genpd);
 
 static void genpd_debug_remove(struct generic_pm_domain *genpd)
 {
-	struct dentry *d;
-
 	if (!genpd_debugfs_dir)
 		return;
 
-	d = debugfs_lookup(genpd->name, genpd_debugfs_dir);
-	debugfs_remove(d);
+	debugfs_lookup_and_remove(genpd->name, genpd_debugfs_dir);
 }
 
 static void genpd_update_accounting(struct generic_pm_domain *genpd)
-- 
2.39.1