Re: [PATCH 0/6] GPIO character device skeleton

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Tue, Nov 3, 2015 at 8:23 AM, Markus Pargmann <mpa@xxxxxxxxxxxxxx> wrote:

> As an idea: We could use the complete path to create some sort of unique id for
> the device (perhaps hash or something different). This id can be exported as
> device attribute and would allow udev to create some links as known from
> /dev/disk/by-id for example. This would make identifying a single chip quite
> easy for any userspace application and we would avoid having this really long
> path somewhere.

I like this idea.

I'll try to figure out some way to hash the bus name + chip name + label
or something down to a unique ID per-gpiochip.

Yours,
Linus Walleij
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