X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=Documentation%2Fwatchdog%2Fsrc%2Fwatchdog-simple.c;h=ba45803a2216a88ff406aca0093c32c9d2d109eb;hb=2fed94c032316d89422d4abfca2a882897489b94;hp=85cf17c48669d73111ff14ae8490417425da7030;hpb=0950c358ee8e969fce45ba363ca1deaf211e57b0;p=karo-tx-linux.git

diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c
index 85cf17c48669..ba45803a2216 100644
--- a/Documentation/watchdog/src/watchdog-simple.c
+++ b/Documentation/watchdog/src/watchdog-simple.c
@@ -1,15 +1,24 @@
+#include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <fcntl.h>
 
-int main(int argc, const char *argv[]) {
+int main(void)
+{
 	int fd = open("/dev/watchdog", O_WRONLY);
+	int ret = 0;
 	if (fd == -1) {
 		perror("watchdog");
-		exit(1);
+		exit(EXIT_FAILURE);
 	}
 	while (1) {
-		write(fd, "\0", 1);
-		fsync(fd);
+		ret = write(fd, "\0", 1);
+		if (ret != 1) {
+			ret = -1;
+			break;
+		}
 		sleep(10);
 	}
+	close(fd);
+	return ret;
 }