diff options
| author | Wim Van Sebroeck <wim@iguana.be> | 2011-07-22 22:57:23 +0400 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2011-07-28 12:01:07 +0400 |
| commit | c2dc00e494cc476551b9beeb883910391ff59737 (patch) | |
| tree | 2dd417fb7e793af0bd28f9b946628662574269d4 /drivers/watchdog | |
| parent | 2fa03560ab3a6dd83cad9bfd5692179fc2ceabb3 (diff) | |
| download | linux-c2dc00e494cc476551b9beeb883910391ff59737.tar.xz | |
watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctl
This part add's the WDIOC_KEEPALIVE ioctl functionality to the
WatchDog Timer Driver Core framework. Please note that the
WDIOF_KEEPALIVEPING bit has to be set in the watchdog_info
options field.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/watchdog_dev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 00a611293065..2fb4cecd50d8 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -120,6 +120,11 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd, return put_user(val, p); case WDIOC_GETBOOTSTATUS: return put_user(wdd->bootstatus, p); + case WDIOC_KEEPALIVE: + if (!(wdd->info->options & WDIOF_KEEPALIVEPING)) + return -EOPNOTSUPP; + watchdog_ping(wdd); + return 0; default: return -ENOTTY; } |