Hi Johannes, > On Mon, May 27, 2013 at 08:25:54PM +0200, Wim Van Sebroeck wrote: > [...] > > > + watchdog_set_drvdata(&a21_wdt, drv); > > > > I am missing the initialisation of the watchdog's timeout value here... > > This watchdog only knows two timeout values, 1s and 30s with the constraint > that you can't go back to 30s once your in a 1s timeout without a reset of the > CPLD. I could initially set it to 30s but that would be redundant.
Yes, but if I use a WDIOC_GETTIMEOUT ioctl call then I will get 0 because you didn't initialize a21_wdt.timeout so you don't know wether or not it's 30 or 1. You can also set it default to 1 and use a timer to do the bridge between userspace and an in kernel timer of 0.5msec. (see git/linux-watchdog/drivers/watchdog/pika_wdt.c as an example). Kind regards, Wim. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
