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-rw-r--r--os/hal/include/hal_sio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/os/hal/include/hal_sio.h b/os/hal/include/hal_sio.h
index d72d57256..e10efeec4 100644
--- a/os/hal/include/hal_sio.h
+++ b/os/hal/include/hal_sio.h
@@ -132,6 +132,7 @@ typedef enum {
* @note If the FIFO is full then the behavior is unpredictable.
*
* @param[in] siop pointer to the @p SIODriver object
+ * @param[in] data frame to be written
*
* @xclass
*/