Patch "watchdog: core: Clear WDOG_HW_RUNNING before calling the stop function" has been added to the 4.7-stable tree

This is a note to let you know that I've just added the patch titled

watchdog: core: Clear WDOG_HW_RUNNING before calling the stop function

to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
watchdog-core-clear-wdog_hw_running-before-calling-the-stop-function.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Guenter Roeck <[email protected]>
Date: Thu, 21 Jul 2016 14:21:56 -0700
Subject: watchdog: core: Clear WDOG_HW_RUNNING before calling the stop function

From: Guenter Roeck <[email protected]>

commit 3c10bbde10fe4dca52726e246cefa6b0a1dfbd3e upstream.

WDOG_HW_RUNNING indicates that the hardware watchdog is running while the watchdog device is closed. The flag may be set by the driver when it is instantiated to indicate that the watchdog is running, and that the watchdog core needs to send heartbeat requests to the driver until the watchdog device is opened.

When the watchdog device is closed, the flag can be used by the driver's stop function to indicate to the watchdog core that it was unable to stop the watchdog, and that the watchdog core needs to send heartbeat requests. This only works if the flag is actually cleared when the watchdog is stopped. To avoid having to clear the flag in each driver's stop function, clear it in the watchdog core before calling the stop function.

---
 drivers/watchdog/watchdog_dev.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -258,10 +258,12 @@ static int watchdog_stop(struct watchdog
 		return -EBUSY;
 	}
 
-	if (wdd->ops->stop)
+	if (wdd->ops->stop) {
+		clear_bit(WDOG_HW_RUNNING, &wdd->status);
 		err = wdd->ops->stop(wdd);
-	else
+	} else {
 		set_bit(WDOG_HW_RUNNING, &wdd->status);
+	}
 
 	if (err == 0) {
 		clear_bit(WDOG_ACTIVE, &wdd->status);

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/watchdog-core-clear-wdog_hw_running-before-calling-the-stop-function.patch queue-4.7/hwmon-adt7411-set-bit-3-in-cfg1-register.patch queue-4.7/nvmem-declare-nvmem_cell_read-consistently.patch