linux-kernel - Re: [PATCH] iio: adc: ti-ads1119: fix sample size in scan struct for triggered buffer

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Message-ID: <20241208165944.1ca1d08b@jic23-huawei>
Date: Sun, 8 Dec 2024 16:59:44 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Francesco Dolcini <francesco@...cini.it>
Cc: Javier Carrasco <javier.carrasco.cruz@...il.com>, João
 Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>,
 Lars-Peter Clausen <lars@...afoo.de>, João Paulo
 Gonçalves <joao.goncalves@...adex.com>, Francesco
 Dolcini <francesco.dolcini@...adex.com>, Jonathan Cameron
 <Jonathan.Cameron@...wei.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: ti-ads1119: fix sample size in scan struct
 for triggered buffer

On Mon, 2 Dec 2024 20:46:22 +0100
Francesco Dolcini <francesco@...cini.it> wrote:

> On Mon, Dec 02, 2024 at 08:18:44PM +0100, Javier Carrasco wrote:
> > This device returns signed, 16-bit samples as stated in its datasheet
> > (see 8.5.2 Data Format). That is in line with the scan_type definition
> > for the IIO_VOLTAGE channel, but 'unsigned int' is being used to read
> > and push the data to userspace.
> > 
> > Given that the size of that type depends on the architecture (at least
> > 2 bytes to store values up to 65535, but its actual size is often 4
> > bytes), use the 's16' type to provide the same structure in all cases.
> > 
> > Fixes: a9306887eba4 ("iio: adc: ti-ads1119: Add driver")
> > Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>  
> 
> Reviewed-by: Francesco Dolcini <francesco.dolcini@...adex.com>
> Cc: stable@...r.kernel.org
> 
> Thanks,
> Francesco
> 

Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,

Jonathan