diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 66123d684ac9e78a0c5a357f9e2b53a75d3e4464..492d8eba37ebc808cfd47347486d02a2f08221ba 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -108,7 +108,7 @@ struct msc_iter {
  * @reg_base:		register window base address
  * @thdev:		intel_th_device pointer
  * @mbuf:		MSU buffer, if assigned
- * @mbuf_priv		MSU buffer's private data, if @mbuf
+ * @mbuf_priv:		MSU buffer's private data, if @mbuf
  * @win_list:		list of windows in multiblock mode
  * @single_sgt:		single mode buffer
  * @cur_win:		current window
@@ -117,6 +117,8 @@ struct msc_iter {
  * @single_wrap:	single mode wrap occurred
  * @base:		buffer's base pointer
  * @base_addr:		buffer's base address
+ * @orig_addr:		MSC0 buffer's base address
+ * @orig_sz:		MSC0 buffer's size
  * @user_count:		number of users of the buffer
  * @mmap_count:		number of mappings
  * @buf_mutex:		mutex to serialize access to buffer-related bits