linux-kernel - Re: [PATCH 3/7] iio: Add in-kernel API for events

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Message-ID: <20250727172445.1b19d0c3@jic23-huawei>
Date: Sun, 27 Jul 2025 17:24:45 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Sean Anderson <sean.anderson@...ux.dev>
Cc: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>,
 linux-iio@...r.kernel.org, linux-hwmon@...r.kernel.org, Andy Shevchenko
 <andy@...nel.org>, Nuno Sá <nuno.sa@...log.com>,
 linux-kernel@...r.kernel.org, David Lechner <dlechner@...libre.com>
Subject: Re: [PATCH 3/7] iio: Add in-kernel API for events

On Mon, 14 Jul 2025 21:20:19 -0400
Sean Anderson <sean.anderson@...ux.dev> wrote:

> Add an API to notify consumers about events. Events still need to be
> enabled using the iio_read_event/iio_write_event functions. Of course,
> userspace can also manipulate the enabled events. I don't think this is
> too much of an issue, since userspace can also manipulate the event
> thresholds. But enabling events may cause existing programs to be
> surprised when they get something unexpected. Maybe we should set the
> interface as busy when there are any in-kernel listeners?
I think we definitely want that to be an option.  

> 
> Signed-off-by: Sean Anderson <sean.anderson@...ux.dev>