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Date: Sun, 5 Jul 2026 00:02:46 +0100
From: Jonathan Cameron <jic23@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Jean-Baptiste Maneyrol via B4 Relay
 <devnull+jean-baptiste.maneyrol.tdk.com@kernel.org>,
 jean-baptiste.maneyrol@tdk.com, David Lechner <dlechner@baylibre.com>, Nuno
 =?UTF-8?B?U8Oh?= <nuno.sa@analog.com>, Andy Shevchenko <andy@kernel.org>,
 Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>,
 linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
 stable@vger.kernel.org
Subject: Re: [PATCH v2] iio: imu: inv_icm42600: fix timestamping by limiting
 FIFO reading
Message-ID: <20260705000246.1d168743@jic23-huawei>
In-Reply-To: <akjzIfY5xnA6ahM0@ashevche-desk.local>
References: <20260629-inv-icm42600-fix-watermark-fifo-reading-v2-1-967e375db7b3@tdk.com>
	<20260703200455.5fa70e5b@jic23-huawei>
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On Sat, 4 Jul 2026 14:48:49 +0300
Andy Shevchenko <andriy.shevchenko@intel.com> wrote:

> On Fri, Jul 03, 2026 at 08:04:55PM +0100, Jonathan Cameron wrote:
> > On Mon, 29 Jun 2026 21:51:55 +0200
> > Jean-Baptiste Maneyrol via B4 Relay <devnull+jean-baptiste.maneyrol.tdk.com@kernel.org> wrote:
> >   
> > > From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
> > > 
> > > Timestamps are made by measuring the chip clock using the watermark
> > > interrupts. If we read more than watermark samples as done today, we
> > > are reducing the period between interrupts and distort the time
> > > measurement. Fix that by reading only watermark samples in the
> > > interrupt case.
> > > 
> > > Fixes: 7f85e42a6c54 ("iio: imu: inv_icm42600: add buffer support in iio devices")
> > > Cc: stable@vger.kernel.org
> > > Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
> > > ---
> > > Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>  
> > 
> > That's not confusing at all :)
> > 
> > I've applied with the invensense one only - shout if you want something else.  
> 
> But the From should be equal to SoB, that's the requirement. So if you also
> changed the authorship to follow it's fine, otherwise you need to use @tdk one
> in SoB (and that's what I think was the initial intention).
> 


Good point.  Flipped to using only the tdk one.

J