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    SubjectRe: [PATCH] pio: add arch specific gpio_is_valid() function
    > gpio_is_valid determines whether a gpio /can/ be attached to acontroller,

    Or more simply: whether its numeric prameter is
    a valid argument to gpio_request() and friends.

    gpio_request determines whether that gpio
    > currently /is/
    > attached to a controller.

    Of course, "controller" is out of sight of folk
    just using GPIOs. Otherwise, that's a fair take
    on one set of gpio_request() error reports.

      Part of the confusion seems
    > to come at least
    > in part from the overlooking of facility for dynamically added gpio numbers.

    Maybe, but I think most of it came from folk who
    expected "valid" to mean (your terminology) the
    GPIO number is now connected to a controller.
    (Otherwise $SUBJECT would be meaningless since
    there'd be no arch-specific issue.
    > Fix the documentation to clarify these points.

    Patch is forthcoming.

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      Last update: 2010-09-07 19:35    [W:0.021 / U:4.880 seconds]
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