Watchdog is ready after successful call of ops->start() callback in wdt_start() function. And is stopped after successful call of ops->stop() callback in wdt_stop function.
So move setting of GD_FLG_WDT_READY flag from initr_watchdog() function to wdt_start() and ensure that GD_FLG_WDT_READY flag is unset in wdt_stop() function.
This change ensures that GD_FLG_WDT_READY flag is set only when watchdog is running. And ensures that flag is also also when watchdog was started not only by initr_watchdog() call (e.g. by U-Boot 'wdt' command).
Signed-off-by: Pali Rohár pali@kernel.org --- drivers/watchdog/wdt-uclass.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/watchdog/wdt-uclass.c b/drivers/watchdog/wdt-uclass.c index 28f7918c4673..3f707f61f74f 100644 --- a/drivers/watchdog/wdt-uclass.c +++ b/drivers/watchdog/wdt-uclass.c @@ -51,7 +51,6 @@ int initr_watchdog(void) }
wdt_start(gd->watchdog_dev, timeout * 1000, 0); - gd->flags |= GD_FLG_WDT_READY; printf("WDT: Started with%s servicing (%ds timeout)\n", IS_ENABLED(CONFIG_WATCHDOG) ? "" : "out", timeout);
@@ -61,21 +60,31 @@ int initr_watchdog(void) int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags) { const struct wdt_ops *ops = device_get_ops(dev); + int ret;
if (!ops->start) return -ENOSYS;
- return ops->start(dev, timeout_ms, flags); + ret = ops->start(dev, timeout_ms, flags); + if (ret == 0) + gd->flags |= GD_FLG_WDT_READY; + + return ret; }
int wdt_stop(struct udevice *dev) { const struct wdt_ops *ops = device_get_ops(dev); + int ret;
if (!ops->stop) return -ENOSYS;
- return ops->stop(dev); + ret = ops->stop(dev); + if (ret == 0) + gd->flags &= ~GD_FLG_WDT_READY; + + return ret; }
int wdt_reset(struct udevice *dev)