diff options
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/dw_wdt.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c index fef7c61f5555..738eee5c8751 100644 --- a/drivers/watchdog/dw_wdt.c +++ b/drivers/watchdog/dw_wdt.c @@ -114,7 +114,15 @@ static int dw_wdt_set_timeout(struct watchdog_device *wdd, unsigned int top_s) writel(top_val | top_val << WDOG_TIMEOUT_RANGE_TOPINIT_SHIFT, dw_wdt->regs + WDOG_TIMEOUT_RANGE_REG_OFFSET); - wdd->timeout = dw_wdt_top_in_seconds(dw_wdt, top_val); + /* + * In case users set bigger timeout value than HW can support, + * kernel(watchdog_dev.c) helps to feed watchdog before + * wdd->max_hw_heartbeat_ms + */ + if (top_s * 1000 <= wdd->max_hw_heartbeat_ms) + wdd->timeout = dw_wdt_top_in_seconds(dw_wdt, top_val); + else + wdd->timeout = top_s; return 0; } |