DEV_PING message type for device driver keepalives

diff --git a/include/minix/com.h b/include/minix/com.h
index 479cedd25c45eceb6cbc97e31299efd35e63b0a1..3fa0030fbabaa23c1ba3fd25a4bf392dea091c01 100755 (executable)
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -60,6 +60,7 @@
 #  define HARD_INT     NOTIFY_FROM(HARDWARE)   /* hardware interrupt */
 #  define NEW_KSIG     NOTIFY_FROM(HARDWARE)   /* new kernel signal */
 #  define FKEY_PRESSED NOTIFY_FROM(TTY_PROC_NR)/* function key press */
+#  define DEV_PING     NOTIFY_FROM(RS_PROC_NR) /* driver liveness ping */
 
 /* Shorthands for message parameters passed with notifications. */
 #define NOTIFY_SOURCE          m_source