Re: [patch/rfc 1/4] GPIO implementation framework

From: David Brownell
Date: Tue Nov 27 2007 - 14:30:11 EST


On Tuesday 27 November 2007, eric miao wrote:
>         status = chip->direction_input(chip, gpio);
> -       if (status == 0)
> -               clear_bit(gpio, chip->is_out);
> +       if (status)
> +               desc->is_out = 0;

You added that same bug in two places (direction_output too).
Only zero status means success; otherwise it's negative errno.

Clearly this patch wasn't tested at all.
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