diff --git a/block/blk-mq.h b/block/blk-mq.h
index 88c558f71819..89b5cd3a6c70 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -7,6 +7,9 @@
 
 struct blk_mq_tag_set;
 
+/**
+ * struct blk_mq_ctx - State for a software queue facing the submitting CPUs
+ */
 struct blk_mq_ctx {
 	struct {
 		spinlock_t		lock;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index e3986f4b3461..ebc34a5686dc 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -9,6 +9,9 @@
 struct blk_mq_tags;
 struct blk_flush_queue;
 
+/**
+ * struct blk_mq_hw_ctx - State for a hardware queue facing the hardware block device
+ */
 struct blk_mq_hw_ctx {
 	struct {
 		spinlock_t		lock;