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Date: Wed, 4 Jun 2008 20:18:25 +0100 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: "Andrew Victor" <avictor.za@...il.com> Cc: "Andrew Morton" <akpm@...ux-foundation.org>, wim@...ana.be, linux-arm-kernel@...ts.arm.linux.org.uk, linux-kernel@...r.kernel.org Subject: Re: AT91SAM9/CAP9 watchdog driver > > - If you specify a bogus value it doesn't load > > - If you specify no value you get a valid default > > - If you specify a valid value you get that > > > > I don't believe yours should be different. > > I don't think any other in-kernel watchdog driver has to deal with > write-once hardware. On these processors once the watchdog register That would not be the case. > is programmed, it cannot be disabled or re-programmed. > If the above behaviour is required, then we might aswell remove the > ioctl(WDIOC_SETTIMEOUT) interface for this driver since if the user > wants anything other than the default timeout they would need to pass > it via the kernel command-line or module parameters. Actually quit a few of them deal with various hardware limits by using a software timer to maintain the hardware timer poking. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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