watchdog: Add a flag to indicate the watchdog doesn't reboot things

Some watchdogs merely trigger external alarms and controls. In a managed
environment this is very useful but we want drivers to be able to figure
out which is which now multiple dogs can be loaded. Thus add an ALARMONLY
feature flag.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index 508d56399e6d..32678a50f98d 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -45,6 +45,8 @@ struct watchdog_info {
 #define WDIOF_SETTIMEOUT        0x0080  /* Set timeout (in seconds) */
 #define WDIOF_MAGICCLOSE        0x0100  /* Supports magic close char */
 #define WDIOF_PRETIMEOUT        0x0200  /* Pretimeout (in seconds), get/set */
+#define WDIOF_ALARMONLY         0x0400  /* Watchdog triggers a management or
+                                           other external alarm not a reboot */
 #define WDIOF_KEEPALIVEPING     0x8000  /* Keep alive ping reply */
 
 #define WDIOS_DISABLECARD       0x0001  /* Turn off the watchdog timer */