[PATCH] improved error checking in ticks per timeslice

[zakthertemsdev at gmail.com]

From: Zack leung <z.liang111 at gmail.com>

---
 cpukit/doxygen/appl-config.h          | 3 +--
 cpukit/include/rtems/confdefs/clock.h | 4 ++++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/cpukit/doxygen/appl-config.h b/cpukit/doxygen/appl-config.h
index bd7cde628f..f843ebbd39 100644
--- a/cpukit/doxygen/appl-config.h
+++ b/cpukit/doxygen/appl-config.h
@@ -3312,8 +3312,7 @@
  * @parblock
  * The following constraints apply to this configuration option:
  *
- * * The value of the configuration option shall be greater than or equal to
- *   zero.
+ * * The value of the configuration option shall be greater than zero.  
  *
  * * The value of the configuration option shall be less than or equal to <a
  *   href="https://en.cppreference.com/w/c/types/integer">UINT32_MAX</a>.
diff --git a/cpukit/include/rtems/confdefs/clock.h b/cpukit/include/rtems/confdefs/clock.h
index 26519cc70b..bb6c7e0b68 100644
--- a/cpukit/include/rtems/confdefs/clock.h
+++ b/cpukit/include/rtems/confdefs/clock.h
@@ -70,6 +70,10 @@
   #warning "The clock ticks per second is not an integer"
 #endif
 
+#if defined(CONFIGURE_TICKS_PER_TIMESLICE) && CONFIGURE_TICKS_PER_TIMESLICE <= 0
+  #error "CONFIGURE_TICKS_PER_TIMESLICE shall be greater than zero"
+#endif
+
 #if CONFIGURE_MICROSECONDS_PER_TICK <= 0
   #error "CONFIGURE_MICROSECONDS_PER_TICK must be positive"
 #endif
-- 
2.43.0