[RFC PATCH 4/5] gpio: gpiolib: Add sysfs support for maintaining GPIO values on reset

Andrew Jeffery andrew at aj.id.au
Fri Oct 20 18:40:08 AEDT 2017


On Fri, 2017-10-20 at 09:29 +0200, Linus Walleij wrote:
> On Fri, Oct 20, 2017 at 5:37 AM, Andrew Jeffery <andrew at aj.id.au>
> wrote:
> 
> > Expose a new 'maintain' sysfs attribute to control both suspend and
> > reset tolerance.
> > 
> > Signed-off-by: Andrew Jeffery <andrew at aj.id.au>
> 
> NAK. You will find the actual ABI documentation in
> Documentation/ABI/obsolete/sysfs-gpio

Right, I did a quick grep to find an attribute description in order to
judge what documentation to change. Unfortunately my grep didn't pick
up this file.

> that's why. This is being phased out and should not be extended.
> Everyone should use the character device, especially for new
> functionality.

Yeah, I expected this (and the NAK) would be the response but figured I
should ask the question.

Thanks,

Andrew
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