Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [char-misc-next v2 7/7] watchdog: mei_wdt: re-register device on event | From | Guenter Roeck <> | Date | Fri, 18 Dec 2015 09:50:15 -0800 |
| |
On 12/18/2015 09:19 AM, One Thousand Gnomes wrote: >> I am not really happy about the watchdog device appearing and disappearing >> dynamically. This wreaks havoc with any standard watchdog application. > > Any software that doesn't handle this has been broken for over fifteen > years. We have hotplug PCI and we have PCI watchdog card support. This > isn't a new behaviour to anyone outside the embedded single board space. > >> Isn't there a better way to handle this ? How about just registering the >> watchdog device and return an error in the access functions if it is disabled ? > > That breaks the existing behaviour of hot pluggable watchdog interfaces > and is different to just about any other device in the kernel. Today with > any desktop or server distribution you can already trivially arrange for > watchdog daemons to start at the point a watchdog is detected dynamically. >
Ok, you have a point. Wonder if any distributions are doing that, though. Any idea ?
Guenter
| ![\](/images/icornerr.gif) |