anchao commented on code in PR #6389:
URL: https://github.com/apache/incubator-nuttx/pull/6389#discussion_r893317118


##########
include/sys/ipc.h:
##########
@@ -35,10 +35,10 @@
 
 /* Mode bits:  The lower order 9-bit bits are the standard mode bits */
 
-#define IPC_MODE    0x01ff     /* Mode bit mask */
-#define IPC_CREAT   (1 << 10)  /* Create entry if key does not exist */
-#define IPC_EXCL    (1 << 11)  /* Fail if key exists */
-#define IPC_NOWAIT  (1 << 12)  /* Error if request must wait */
+#define IPC_MODE   0x0fff /* Mode bit mask */

Review Comment:
   ipc mode is a private implementation of nuttx, which is used as a mask in 
the source code. dur to changes in other IPC_* definitions, IPC_MODE also needs 
to be modified accordingly



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