Documentation/watchdog: close the fd when cmdline arg given

in the watchdog test code, the ioctl is performed on the watchdog device
and just doing exit(0) so we leak a filedescripor.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 6 insertions, 3 deletions

diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c
index 63fdc34ceb98..23084f221279 100644
--- a/Documentation/watchdog/src/watchdog-test.c
+++ b/Documentation/watchdog/src/watchdog-test.c
@@ -47,18 +47,18 @@ int main(int argc, char *argv[])
             ioctl(fd, WDIOC_SETOPTIONS, &flags);
             fprintf(stderr, "Watchdog card disabled.\n");
             fflush(stderr);
-            exit(0);
+            goto end;
         } else if (!strncasecmp(argv[1], "-e", 2)) {
             flags = WDIOS_ENABLECARD;
             ioctl(fd, WDIOC_SETOPTIONS, &flags);
             fprintf(stderr, "Watchdog card enabled.\n");
             fflush(stderr);
-            exit(0);
+            goto end;
         } else {
             fprintf(stderr, "-d to disable, -e to enable.\n");
             fprintf(stderr, "run by itself to tick the card.\n");
             fflush(stderr);
-            exit(0);
+            goto end;
         }
     } else {
         fprintf(stderr, "Watchdog Ticking Away!\n");
@@ -69,4 +69,7 @@ int main(int argc, char *argv[])
         keep_alive();
         sleep(1);
     }
+end:
+    close(fd);
+    return 0;
 }