X-Git-Url: http://git.archive.openwrt.org/?a=blobdiff_plain;f=watchdog.c;h=592ae7e74f771472ef7a670f8badbac1084d4ed5;hb=7be2859d91cb8c72bd8c84d69a03372088b78a3f;hp=3c097e2273c55c34f90c251588aa0630a64f7299;hpb=9286d16672b26c9fe7cb9dbf827a43a910df5559;p=project%2Fprocd.git

diff --git a/watchdog.c b/watchdog.c
index 3c097e2..592ae7e 100644
--- a/watchdog.c
+++ b/watchdog.c
@@ -35,7 +35,7 @@ static int wdt_frequency = 5;
 void watchdog_ping(void)
 {
 	DEBUG(4, "Ping\n");
-	if (write(wdt_fd, "X", 1) < 0)
+	if (wdt_fd >= 0 && write(wdt_fd, "X", 1) < 0)
 		ERROR("WDT failed to write: %s\n", strerror(errno));
 }