linux-kernel - Re: [PATCH] IIO: bmp280-core.c: fix error in humidity calculation

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Date:   Mon, 3 Apr 2017 23:16:37 -0700
From:   Matt Ranostay <matt.ranostay@...sulko.com>
To:     Andreas Klinger <ak@...klinger.de>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Matt Ranostay <matt.ranostay@...el.com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald <pmeerw@...erw.net>, ddvlad@...il.com,
        Akinobu Mita <akinobu.mita@...il.com>,
        Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
        Aniroop Mathur <a.mathur@...sung.com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] IIO: bmp280-core.c: fix error in humidity calculation

On Sun, Apr 2, 2017 at 10:29 AM, Andreas Klinger <ak@...klinger.de> wrote:
> Linus Walleij <linus.walleij@...aro.org> schrieb am Sun, 02. Apr 16:56:
>> On Sun, Apr 2, 2017 at 11:32 AM, Jonathan Cameron <jic23@...nel.org> wrote:
>> > On 27/03/17 11:06, Andreas Klinger wrote:
>> >> While calculating the compensation of the humidity there are negative
>> >> values interpreted as unsigned because of unsigned variables used.
>> >> These values need to be casted to signed as indicated by the documentation
>> >> of the sensor.
>> >>
>> >> Signed-off-by: Andreas Klinger <ak@...klinger.de>
>> >
>> > Looks superficially right to me, but would like an Ack from Linus Walleij.
>>
>> I didn't work on these calculations, only infrastructure for the driver
>> but FWIW:
>> Acked-by: Linus Walleij <linus.walleij@...aro.org>
>>
>> Matt Ranostay @Intel is the person you probably want to ACK it though,
>> he added the humidity calculations :)
>
> It just turned out that there must be another error in the calculation. I'll fix
> and test it first.
>
> When i'm done i'll send a new version of the patch.
>

Ok will hold off till review till the next patchset... BTW this
datasheet's calculations made my eyes bleed so it is quiet likely it
has bugs...

Thanks,

Matt

> Andreas
>
>>
>> Yours,
>> Linus Walleij
>
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