From: WANG Cong Date: Sat, 6 Oct 2007 03:17:13 +0000 (+0800) Subject: [WATCHDOG] Documentation/watchdog/src/watchdog-simple.c: improve this code X-Git-Tag: v2.6.24-rc1~20^2 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=06063e26bc3ab62aa7aca874c6ce9e7638673838;p=linux-2.6-omap-h63xx.git [WATCHDOG] Documentation/watchdog/src/watchdog-simple.c: improve this code Make some improvements for Documentation/watchdog/src/watchdog-simple.c. Signed-off-by: WANG Cong Signed-off-by: Wim Van Sebroeck Signed-off-by: Andrew Morton --- diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c index 47801bc7e74..4cf72f3fa8e 100644 --- a/Documentation/watchdog/src/watchdog-simple.c +++ b/Documentation/watchdog/src/watchdog-simple.c @@ -3,15 +3,25 @@ #include #include -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; + } + ret = fsync(fd); + if (ret) + break; sleep(10); } + close(fd); + return ret; }