summaryrefslogtreecommitdiff
path: root/Documentation/watchdog/watchdog-kernel-api.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/watchdog/watchdog-kernel-api.txt')
-rw-r--r--Documentation/watchdog/watchdog-kernel-api.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt
index 92700d229bf9..7f31125c123e 100644
--- a/Documentation/watchdog/watchdog-kernel-api.txt
+++ b/Documentation/watchdog/watchdog-kernel-api.txt
@@ -167,6 +167,10 @@ they are supported. These optional routines/operations are:
info structure).
* status: this routine checks the status of the watchdog timer device. The
status of the device is reported with watchdog WDIOF_* status flags/bits.
+ WDIOF_MAGICCLOSE and WDIOF_KEEPALIVEPING are reported by the watchdog core;
+ it is not necessary to report those bits from the driver. Also, if no status
+ function is provided by the driver, the watchdog core reports the status bits
+ provided in the bootstatus variable of struct watchdog_device.
* set_timeout: this routine checks and changes the timeout of the watchdog
timer device. It returns 0 on success, -EINVAL for "parameter out of range"
and -EIO for "could not write value to the watchdog". On success this