X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=libserialport.h.in;fp=libserialport.h.in;h=c37c1cacc24d8e8f9735367b12c7da7665cf7f8e;hb=9eb9f07130243f0cf5f2ce6a6ae295001eda1c8b;hp=43d7ee7e40ab8a2a6d1c2ca7b0436e0641eccbe0;hpb=1b91c6eadbcbd2356441920c11c9385083b93e91;p=libserialport.git

diff --git a/libserialport.h.in b/libserialport.h.in
index 43d7ee7..c37c1ca 100644
--- a/libserialport.h.in
+++ b/libserialport.h.in
@@ -446,8 +446,10 @@ enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
  * Get the USB Vendor ID and Product ID of a USB serial adapter port.
  *
  * @param[in] port Pointer to a port structure. Must not be NULL.
- * @param[out] usb_vid Pointer to a variable to store the USB VID. Must not be NULL.
- * @param[out] usb_pid Pointer to a variable to store the USB PID. Must not be NULL.
+ * @param[out] usb_vid Pointer to a variable to store the USB VID.
+ *                     Can be NULL (in that case it will be ignored).
+ * @param[out] usb_pid Pointer to a variable to store the USB PID.
+ *                     Can be NULL (in that case it will be ignored).
  *
  * @return SP_OK upon success, a negative error code otherwise.
  *