driver core: dd: remove deferred_devices variable

No need to save the debugfs dentry for the "devices_deferred" debugfs
file (gotta love the juxtaposition), if we need to remove it we can look
it up from debugfs itself.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20210216142400.3759099-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 9179825..66c31cd 100644 (file)
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -55,7 +55,6 @@ static DEFINE_MUTEX(deferred_probe_mutex);
 static LIST_HEAD(deferred_probe_pending_list);
 static LIST_HEAD(deferred_probe_active_list);
 static atomic_t deferred_trigger_count = ATOMIC_INIT(0);
-static struct dentry *deferred_devices;
 static bool initcalls_done;
 
 /* Save the async probe drivers' name from kernel cmdline */
@@ -310,8 +309,8 @@ static DECLARE_DELAYED_WORK(deferred_probe_timeout_work, deferred_probe_timeout_
  */
 static int deferred_probe_initcall(void)
 {
-       deferred_devices = debugfs_create_file("devices_deferred", 0444, NULL,
-                                              NULL, &deferred_devs_fops);
+       debugfs_create_file("devices_deferred", 0444, NULL, NULL,
+                           &deferred_devs_fops);
 
        driver_deferred_probe_enable = true;
        driver_deferred_probe_trigger();
@@ -336,7 +335,7 @@ late_initcall(deferred_probe_initcall);
 
 static void __exit deferred_probe_exit(void)
 {
-       debugfs_remove_recursive(deferred_devices);
+       debugfs_remove_recursive(debugfs_lookup("devices_deferred", NULL));
 }
 __exitcall(deferred_probe_exit);