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author | Timur Tabi <timur@codeaurora.org> | 2016-06-21 18:00:15 -0500 |
---|---|---|
committer | Wim Van Sebroeck <wim@iguana.be> | 2016-07-17 21:02:32 +0200 |
commit | 5a2d3de1960260f34da84ac27bdc1345b541f2e8 (patch) | |
tree | 1ce58d3c592c88a309402381f97bb082c3002fc3 /Documentation | |
parent | ee279c2734b07fb74031b1626b0f097cee9de5c8 (diff) | |
download | linux-5a2d3de1960260f34da84ac27bdc1345b541f2e8.tar.gz linux-5a2d3de1960260f34da84ac27bdc1345b541f2e8.tar.bz2 linux-5a2d3de1960260f34da84ac27bdc1345b541f2e8.zip |
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>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/watchdog/src/watchdog-test.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c index b3cc7aa12a72..c69153913722 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; } |