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-rw-r--r--os/kernel/include/chqueues.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/os/kernel/include/chqueues.h b/os/kernel/include/chqueues.h
index d38b25e6f..a2df59dad 100644
--- a/os/kernel/include/chqueues.h
+++ b/os/kernel/include/chqueues.h
@@ -149,7 +149,8 @@ typedef GenericQueue InputQueue;
*
* @iclass
*/
-#define chIQIsFullI(iqp) ((bool_t)(chQSpaceI(iqp) >= chQSizeI(iqp)))
+#define chIQIsFullI(iqp) ((bool_t)(((iqp)->q_wrptr == (iqp)->q_rdptr) && \
+ ((iqp)->q_counter != 0)))
/**
* @brief Input queue read.
@@ -243,7 +244,8 @@ typedef GenericQueue OutputQueue;
*
* @iclass
*/
-#define chOQIsEmptyI(oqp) ((bool_t)(chQSpaceI(oqp) >= chQSizeI(oqp)))
+#define chOQIsEmptyI(oqp) ((bool_t)(((oqp)->q_wrptr == (oqp)->q_rdptr) && \
+ ((oqp)->q_counter != 0)))
/**
* @brief Evaluates to @p TRUE if the specified output queue is full.