Fixed bug 3019158.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2028 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 8 insertions, 2 deletions

diff --git a/os/kernel/src/chqueues.c b/os/kernel/src/chqueues.c
index 651b79f4e..84cbbed94 100644
--- a/os/kernel/src/chqueues.c
+++ b/os/kernel/src/chqueues.c
@@ -154,7 +154,8 @@ msg_t chIQGetTimeout(InputQueue *iqp, systime_t time) {
  *

  * @param[in] iqp       pointer to an @p InputQueue structure

  * @param[out] bp       pointer to the data buffer

- * @param[in] n         the maximum amount of data to be transferred

+ * @param[in] n         the maximum amount of data to be transferred, the

+ *                      value 0 is reserved

  * @param[in] time      the number of ticks before the operation timeouts,

  *                      the following special values are allowed:

  *                      - @a TIME_IMMEDIATE immediate timeout.

@@ -167,6 +168,8 @@ size_t chIQReadTimeout(InputQueue *iqp, uint8_t *bp,
   qnotify_t nfy = iqp->q_notify;

   size_t r = 0;

 

+  chDbgCheck(n > 0, "chIQReadTimeout");

+

   chSysLock();

   while (TRUE) {

     if (chIQIsEmpty(iqp)) {

@@ -304,7 +307,8 @@ msg_t chOQGetI(OutputQueue *oqp) {
  *

  * @param[in] oqp       pointer to an @p OutputQueue structure

  * @param[out] bp       pointer to the data buffer

- * @param[in] n         the maximum amount of data to be transferred

+ * @param[in] n         the maximum amount of data to be transferred, the

+ *                      value 0 is reserved

  * @param[in] time      the number of ticks before the operation timeouts,

  *                      the following special values are allowed:

  *                      - @a TIME_IMMEDIATE immediate timeout.

@@ -317,6 +321,8 @@ size_t chOQWriteTimeout(OutputQueue *oqp, const uint8_t *bp,
   qnotify_t nfy = oqp->q_notify;

   size_t w = 0;

 

+  chDbgCheck(n > 0, "chOQWriteTimeout");

+

   chSysLock();

   while (TRUE) {

     if (chOQIsFull(oqp)) {