On Mon, May 27, 2013 at 09:16:18PM +0200, Wim Van Sebroeck wrote: > Hi Guenter, > > > > Hi Guenter, > > > > > > Is there an easy way to determine which driver is loaded for each > > > /dev/watchdogN device (from a script perspective). > > > > > > Basically, I wanted to determine the module that needs to be included in > > > the kdump initrd image. > > > > > Sometimes. For example, the iTCO_wdt driver has an entry in /sys/devices, and > > /sys/class/watchdog/watchdogX/device points to it. That is not always the case, > > howewver. In my system, for example, the MEI watchdog is active, but there is > > nothing I can find that would give me an indication that /dev/watchdog0 actually > > points to the MEI watchdog driver. > > > > Of course I might be missing something, and there might be some other means > > to identify the driver from userspace. Would be great, actually, as I am having > > the same problem. > > Only when you set the .parent field in the watchdog_device data you will get the > referal in the /sys/class/... tree. In iTCO_wdt.c you have the following code > that does that: iTCO_wdt_watchdog_dev.parent = dev->dev.parent; > > From the watchdog-kernel-api documentation: > * parent: set this to the parent device (or NULL) before calling > watchdog_register_device. > Hi Wim, We live and learn ... thanks a lot for the hint! Guenter
