Commit 5a2d3de1 authored Jun 21, 2016 by Timur Tabi Committed by Wim Van Sebroeck Jul 17, 2016

Documentation/watchdog: add support for magic close to watchdog-test



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@codeaurora.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

parent ee279c27

Documentation/watchdog/src/watchdog-test.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}