diff --git a/drivers/iommu/generic_pt/pt_common.h b/drivers/iommu/generic_pt/pt_common.h
index b5628f47e0db..3b4e37108914 100644
--- a/drivers/iommu/generic_pt/pt_common.h
+++ b/drivers/iommu/generic_pt/pt_common.h
@@ -354,6 +354,7 @@ static inline unsigned int pt_max_sw_bit(struct pt_common *common);
 /**
  * pt_test_sw_bit_acquire() - Read a software bit in an item
  * @pts: Entry to set
+ * @bitnr: Bit to read
  *
  * Software bits are ignored by HW and can be used for any purpose by the
  * software. This does a test bit and acquire operation.
@@ -364,6 +365,7 @@ static inline bool pt_test_sw_bit_acquire(struct pt_state *pts,
 /**
  * pt_set_sw_bit_release() - Set a software bit in an item
  * @pts: Entry to set
+ * @bitnr: Bit to read
  *
  * Software bits are ignored by HW and can be used for any purpose by the
  * software. This does a set bit and release operation.