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SubjectRe: [patch 2.6.20-rc2] gpio_direction_output() needs an initial value
On Thu, 1 Mar 2007 18:25:09 -0800
David Brownell <> wrote:

> It's been pointed out that output GPIOs should have an initial value, to
> avoid signal glitching ... among other things, it can be some time before
> a driver is ready. This patch corrects that oversight, fixing
> - documentation
> - platforms supporting the GPIO interface
> - users of that call (just one for now, others are pending)
> Note that most platforms are clear about the hardware letting the output
> value be set before the pin direction is changed, but the s3c241x docs
> are vague on that topic ... so those chips might not avoid the glitches.
> Signed-off-by: David Brownell <>

Acked-by: Haavard Skinnemoen <>

Thanks, Dave.

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