[OpenWrt-Devel] [PATCH procd] watchdog: shutdown the kernel watchdog when stopping

John Crispin blogic at openwrt.org
Mon Sep 28 08:21:35 EDT 2015

On 28/09/2015 14:14, Helmut Schaa wrote:
> On Mon, Sep 28, 2015 at 12:58 AM, Alexander Couzens <lynxis at fe80.eu> wrote:
>> The kernel wdt counting down even when not pinged.
>> Shutdown the filehandler to /dev/watchdog with magic cookie
>> to prevent this.
>> Signed-off-by: Alexander Couzens <lynxis at fe80.eu>
>> ---
>>  watchdog.c | 17 ++++++++++++++---
>>  1 file changed, 14 insertions(+), 3 deletions(-)
>> I'm not certainly clear, the previous behaviour was a bug or feature.
>> If stop=True should really only stop the pinging thread, I really would like
>> to shutdown the watchdog gracefully on another way. E.g. with another argument
>> shutdown.
> I've always interpreted the call that it just stops triggering the
> watchdog and might
> force a hw reset. So IMO it would make sense to add a parameter to specify the
> exact action that should be taken.
> Helmut

indeed the patch is imho partially incorrect. there are 2 ways to close
the device. this patch would break existing users of the function
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