diff options
| author |   Paul Cercueil <paul@crapouillou.net> | 2018-05-10 20:47:46 +0200 |
|---|---|---|
| committer |   James Hogan <jhogan@kernel.org> | 2018-05-14 23:58:23 +0100 |
| commit | b4918057f35c5c604325da437db99e70259bd372 (patch) | |
| tree | f3c18d936aac492d79d5c2c0434cb2662e0bb7e0 /drivers/watchdog | |
| parent | watchdog: JZ4740: Use devm_* functions (diff) | |
| download | linux-dev-b4918057f35c5c604325da437db99e70259bd372.tar.xz linux-dev-b4918057f35c5c604325da437db99e70259bd372.zip | |
watchdog: JZ4740: Register a restart handler
The watchdog driver can restart the system by simply configuring the
hardware for a timeout of 0 seconds.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Mathieu Malaterre <malat@debian.org>
Cc: linux-watchdog@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: James Hogan <jhogan@kernel.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/jz4740_wdt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c index 22136e3522b9..b8b015a7d045 100644 --- a/drivers/watchdog/jz4740_wdt.c +++ b/drivers/watchdog/jz4740_wdt.c @@ -130,6 +130,14 @@ static int jz4740_wdt_stop(struct watchdog_device *wdt_dev) return 0; } +static int jz4740_wdt_restart(struct watchdog_device *wdt_dev, + unsigned long action, void *data) +{ + wdt_dev->timeout = 0; + jz4740_wdt_start(wdt_dev); + return 0; +} + static const struct watchdog_info jz4740_wdt_info = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .identity = "jz4740 Watchdog", @@ -141,6 +149,7 @@ static const struct watchdog_ops jz4740_wdt_ops = { .stop = jz4740_wdt_stop, .ping = jz4740_wdt_ping, .set_timeout = jz4740_wdt_set_timeout, + .restart = jz4740_wdt_restart, }; #ifdef CONFIG_OF |