Re: [PATCH v2 5/5] gpio / ACPI: Add support for ACPI GPIO operation regions

[Linus Walleij]

On Thu, Mar 13, 2014 at 4:05 PM, Cox, Alan <alan.cox@xxxxxxxxx> wrote:
>> > +                       gpiod_set_raw_value(desc, !!((1 << i) & *value));
>>
>> What is this? How can the expression !!((1 << i) possibly evaluate to
>> anything else than "true"? I don't get it. Just (desc, *value) seem more
>> apropriate.
>
>
> The expression is !!((1 << i) & *value)
>
> so its the standard C sematic for 'logical and' ? 1 : 0

Hm I missed the first paranthesis when parsing in my head,
all wrong, too bad. Thanks Alan.

Yours,
Linus Walleij
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