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-rw-r--r--Documentation/watchdog/watchdog-api.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt
index c5beb548cfc..21ed5117366 100644
--- a/Documentation/watchdog/watchdog-api.txt
+++ b/Documentation/watchdog/watchdog-api.txt
@@ -36,6 +36,9 @@ timeout or margin. The simplest way to ping the watchdog is to write
some data to the device. So a very simple watchdog daemon would look
like this:
+#include <stdlib.h>
+#include <fcntl.h>
+
int main(int argc, const char *argv[]) {
int fd=open("/dev/watchdog",O_WRONLY);
if (fd==-1) {