Some drivers have the WDIOF_MAGICCLOSE set, which means that applications need to write 'V' to the watchdog device before closing, otherwise the driver won't stop the watchdog timer. Signed-off-by: Timur Tabi <timur@xxxxxxxxxxxxxx> --- Documentation/watchdog/src/watchdog-test.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c index b3cc7aa..c691539 100644 --- a/Documentation/watchdog/src/watchdog-test.c +++ b/Documentation/watchdog/src/watchdog-test.c @@ -13,6 +13,7 @@ #include <linux/watchdog.h> int fd; +const char v = 'V'; /* * This function simply sends an IOCTL to the driver, which in turn ticks @@ -34,6 +35,7 @@ static void keep_alive(void) static void term(int sig) { + write(fd, &v, 1); close(fd); printf("\nStopping watchdog ticks...\n"); exit(0); @@ -89,6 +91,7 @@ int main(int argc, char *argv[]) sleep(ping_rate); } end: + write(fd, &v, 1); close(fd); return 0; } -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html