Re: [PATCH RESEND] gpio: of_get_named_gpio_flags() return-EPROBE_DEFER if GPIO not yet available

From: Linus Walleij
Date: Tue Jul 17 2012 - 14:24:14 EST

On Thu, Jun 28, 2012 at 12:32 AM, Roland Stigge <stigge@xxxxxxxxx> wrote:

> of_get_named_gpio_flags() and of_get_named_gpio() return -EPROBE_DEFER if the
> respective GPIO is not (yet) available. This is useful if driver's probe()
> functions try to get a GPIO whose controller isn't probed yet. Thus, the driver
> can be probed again later on.
> The function still returns -EINVAL on other errors (parse error or node doesn't
> exist). This way, the case of an optional/intentionally missing GPIO is handled
> appropriately.
> Signed-off-by: Roland Stigge <stigge@xxxxxxxxx>

Patch applied, if all gpio stuff shall defer properly in v3.6 we need this
so let's do some testing in -next!

Would be nice to get some ACK besides my own...

Linus Walleij
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