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-rw-r--r--lib/idr.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/idr.c b/lib/idr.c
index fb86a675dcff..5e0966be0f7c 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -589,7 +589,8 @@ EXPORT_SYMBOL(idr_for_each);
* @nextidp: pointer to lookup key
*
* Returns pointer to registered object with id, which is next number to
- * given id.
+ * given id. After being looked up, *@nextidp will be updated for the next
+ * iteration.
*/
void *idr_get_next(struct idr *idp, int *nextidp)