From a952f3cfafaf147df144cd37cc017ed46aac9c6b Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 20 Dec 2015 10:25:41 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8620
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/include/hal_buffers.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'os/hal/include')

diff --git a/os/hal/include/hal_buffers.h b/os/hal/include/hal_buffers.h
index 0acf9ebd9..243d74196 100644
--- a/os/hal/include/hal_buffers.h
+++ b/os/hal/include/hal_buffers.h
@@ -94,8 +94,13 @@ struct io_buffers_queue {
   uint8_t               *buffers;
   /**
    * @brief   Pointer for R/W sequential access.
+   * @note    It is @p NULL if a new buffer must be fetched from the queue.
    */
   uint8_t               *ptr;
+  /**
+   * @brief   Boundary for R/W sequential access.
+   */
+  uint8_t               *top;
   /**
    * @brief   Data notification callback.
    */
@@ -156,7 +161,7 @@ typedef io_buffers_queue_t output_buffers_queue_t;
  *
  * @iclass
  */
-#define iqbIsEmptyI(ibqp) ((bool)(bqSpaceI(ibqp) == 0U))
+#define ibqIsEmptyI(ibqp) ((bool)(bqSpaceI(ibqp) == 0U))
 
 /**
  * @brief   Evaluates to @p TRUE if the specified input buffered queue is full.
-- 
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