Although softdog supports pretimeout, there is no way to set pretimeout,
so pretimeout will never be processed in softdog_ping().
Here add the configuration mechanism for pretimeout and the default value
is 1 second, so when CONFIG_SOFT_WATCHDOG_PRETIMEOUT is enabled, the
pretimeout function defaults available.
Signed-off-by: Wang Qing <wangq...@vivo.com>
---
drivers/watchdog/softdog.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/watchdog/softdog.c b/drivers/watchdog/softdog.c
index 7a10962..79e52791
--- a/drivers/watchdog/softdog.c
+++ b/drivers/watchdog/softdog.c
@@ -35,6 +35,14 @@ MODULE_PARM_DESC(soft_margin,
"Watchdog soft_margin in seconds. (0 < soft_margin < 65536, default="
__MODULE_STRING(TIMER_MARGIN) ")");
+#ifdef CONFIG_SOFT_WATCHDOG_PRETIMEOUT
+#define PRE_TIMER_MARGIN 1 /* Default is 1 seconds */
+static unsigned int soft_pretimeout = PRE_TIMER_MARGIN; /* in seconds */
+module_param(soft_pretimeout, uint, 0);
+MODULE_PARM_DESC(soft_pretimeout,
+ "Watchdog soft_pretimeout in seconds. (0 < soft_pretimeout <
soft_margin, default=1)");
+#endif
+
static bool nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
@@ -177,6 +185,9 @@ static struct watchdog_device softdog_dev = {
.min_timeout = 1,
.max_timeout = 65535,
.timeout = TIMER_MARGIN,
+#ifdef CONFIG_SOFT_WATCHDOG_PRETIMEOUT
+ .pretimeout = PRE_TIMER_MARGIN,
+#endif
};
static int __init softdog_init(void)
--
2.7.4
