From 071bf69a0220253a44acb8b2a27f7a262b9a46bf Mon Sep 17 00:00:00 2001
From: Shuah Khan <shuahkh@osg.samsung.com>
Date: Fri, 16 Sep 2016 17:40:40 -0600
Subject: samples: move watchdog example code from Documentation

Move watchdog examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build watchdog. It can be built
from top level directory or from watchdog directory:

Run make -C samples/watchdog or cd samples/watchdog; make

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
 samples/watchdog/.gitignore        |  1 +
 samples/watchdog/Makefile          |  8 ++++++++
 samples/watchdog/watchdog-simple.c | 24 ++++++++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 samples/watchdog/.gitignore
 create mode 100644 samples/watchdog/Makefile
 create mode 100644 samples/watchdog/watchdog-simple.c

(limited to 'samples/watchdog')

diff --git a/samples/watchdog/.gitignore b/samples/watchdog/.gitignore
new file mode 100644
index 000000000000..ff0ebb540333
--- /dev/null
+++ b/samples/watchdog/.gitignore
@@ -0,0 +1 @@
+watchdog-simple
diff --git a/samples/watchdog/Makefile b/samples/watchdog/Makefile
new file mode 100644
index 000000000000..9b53d89b1ccf
--- /dev/null
+++ b/samples/watchdog/Makefile
@@ -0,0 +1,8 @@
+CC := $(CROSS_COMPILE)gcc
+PROGS := watchdog-simple
+
+all: $(PROGS)
+
+clean:
+	rm -fr $(PROGS)
+
diff --git a/samples/watchdog/watchdog-simple.c b/samples/watchdog/watchdog-simple.c
new file mode 100644
index 000000000000..ba45803a2216
--- /dev/null
+++ b/samples/watchdog/watchdog-simple.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(void)
+{
+	int fd = open("/dev/watchdog", O_WRONLY);
+	int ret = 0;
+	if (fd == -1) {
+		perror("watchdog");
+		exit(EXIT_FAILURE);
+	}
+	while (1) {
+		ret = write(fd, "\0", 1);
+		if (ret != 1) {
+			ret = -1;
+			break;
+		}
+		sleep(10);
+	}
+	close(fd);
+	return ret;
+}
-- 
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