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Message-ID: <20241027090328.13a97bcc@jic23-huawei>
Date: Sun, 27 Oct 2024 09:03:28 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Jean-Baptiste Maneyrol via B4 Relay
 <devnull+jean-baptiste.maneyrol.tdk.com@...nel.org>
Cc: jean-baptiste.maneyrol@....com, Lars-Peter Clausen <lars@...afoo.de>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v2] iio: invensense: fix multiple odr switch when FIFO
 is off

On Mon, 21 Oct 2024 10:38:42 +0200
Jean-Baptiste Maneyrol via B4 Relay <devnull+jean-baptiste.maneyrol.tdk.com@...nel.org> wrote:

> From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>
> 
> When multiple ODR switch happens during FIFO off, the change could
> not be taken into account if you get back to previous FIFO on value.
> For example, if you run sensor buffer at 50Hz, stop, change to
> 200Hz, then back to 50Hz and restart buffer, data will be timestamped
> at 200Hz. This due to testing against mult and not new_mult.
> 
> To prevent this, let's just run apply_odr automatically when FIFO is
> off. It will also simplify driver code.
> 
> Update inv_mpu6050 and inv_icm42600 to delete now useless apply_odr.
> 
> Fixes: 95444b9eeb8c ("iio: invensense: fix odr switching to same value")
> Cc: stable@...r.kernel.org
> Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>
Applied to the fixes-togreg branch of iio.git

Depending on what else comes in and timing, I might move this over to the
queue for the next merge window.

Thanks,

Jonathan


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