powercap/drivers/dtpm: Fix root node initialization

The root node is not set to NULL when the dtpm root node is removed. Consequently, it is not possible to create a new root as it is already set. Set the root node to NULL when the last node is removed. Signed-off-by: Daniel Lezcano <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
vieko · Mar 1, 2021 · f3c1410 · f3c1410
1 parent fe07bfd
commit f3c1410
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/powercap/dtpm.c b/drivers/powercap/dtpm.c
@@ -207,6 +207,9 @@ int dtpm_release_zone(struct powercap_zone *pcz)
 	if (dtpm->ops)
 		dtpm->ops->release(dtpm);
 
+	if (root == dtpm)
+		root = NULL;
+
 	kfree(dtpm);
 
 	return 0;