[lm-sensors] [PATCH 1/3] watchdog_dev: Add support for having more then 1 watchdog

Wim Van Sebroeck wim at iguana.be
Fri May 4 14:34:34 CEST 2012


Hi Alan,

> > You do this even for watchdog0 / for the watchdog we've also registered as
> > misc_dev. I guess this is intentional and you want the watchdog to be
> > available as both misc,130 as well as as MAJOR(dog_devt),0 ?
> 
> Yes - so that it appears in the watchdog class in sysfs for example.

What happens if one program opens the miscdevice and another program opens the MAJOR(dog_devt),0 device?
I presume that the WDOG_DEV_OPEN status bit will prohibit the opening of the second device in that case...

Thanks,
Wim.




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