linux-kernel - Re: [PATCH v2 2/3] iio: pressure: ms5611: changed hardcoded SPI speed to value limited

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 21 Oct 2022 17:32:21 +0200
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Mitja Spes <mitja@...av.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Tomasz Duszynski <tduszyns@...il.com>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] iio: pressure: ms5611: changed hardcoded SPI
 speed to value limited

Hi Mitja,

On Fri, Oct 21, 2022 at 03:58:21PM +0200, Mitja Spes wrote:
> Don't hardcode the ms5611 SPI speed, limit it instead.
> 
> Signed-off-by: Mitja Spes <mitja@...av.com>
> ---
>  drivers/iio/pressure/ms5611_spi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c
> index 432e912096f4..a0a7205c9c3a 100644
> --- a/drivers/iio/pressure/ms5611_spi.c
> +++ b/drivers/iio/pressure/ms5611_spi.c
> @@ -91,7 +91,7 @@ static int ms5611_spi_probe(struct spi_device *spi)
>  	spi_set_drvdata(spi, indio_dev);
>  
>  	spi->mode = SPI_MODE_0;
> -	spi->max_speed_hz = 20000000;
> +	spi->max_speed_hz = min(spi->max_speed_hz, 20000000U);

max_speed_hz is a limit, and the max frequency the ms5611 support is
20MHz.

Best regards,
Marcus Folkesson

Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)