linux-kernel - Re: [PATCH 3/3] Documentation: ABI: sysfs-driver-regulator-output

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Message-ID: <5282acd1-3c7a-4948-83f2-2829910ab841@sirena.org.uk>
Date:   Tue, 12 Sep 2023 15:03:47 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Zev Weiss <zev@...ilderbeest.net>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Naresh Solanki <naresh.solanki@...ements.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] Documentation: ABI: sysfs-driver-regulator-output

On Sun, Sep 10, 2023 at 01:50:37PM -0700, Zev Weiss wrote:
> On Mon, Sep 04, 2023 at 05:24:31AM PDT, Mark Brown wrote:

> > It's a clear on read interrupt.

> Sure, analogous behavior in hardware is reasonably common, but that doesn't
> strike me as a very compelling reason to design the kernel<->userspace
> interface to mimic it -- providing nicer interfaces than the raw hardware is
> one of the main reasons for having an OS in the first place, after all.

If it were something other than the userspace consumer I'd be a bit more
concerned but that's all sharp edges and direct access in a very
controlled system.  In any case clear on write is the obvious
alternative approach.

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