Messages in this thread | | | Date | Sat, 14 Jul 2012 21:57:08 +0200 | Subject | Re: [PATCH RESEND] gpio: of_get_named_gpio_flags() return -EPROBE_DEFER if GPIO not yet available | From | Linus Walleij <> |
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On Thu, Jun 28, 2012 at 12:32 AM, Roland Stigge <stigge@antcom.de> 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@antcom.de> > Acked-by: Linus Walleij <linus.walleij@linaro.org>
If I understand correctly this relates closely to another patch from Mark Brown we discussed the other day (sorry for missing this patch, which arrived earlier, for a while).
Mark/Grant can you look at this patch?
Yours, Linus Walleij
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