linux-kernel - Re: [PATCH v13 03/10] mux: minimal mux subsystem and gpio-based mux controller

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Message-ID: <23158179-3667-c4d7-c8ac-b7a011d77749@axentia.se>
Date:   Fri, 21 Apr 2017 17:08:17 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     Philipp Zabel <p.zabel@...gutronix.de>
CC:     <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Jonathan Corbet <corbet@....net>, <linux-i2c@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <linux-doc@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Colin Ian King <colin.king@...onical.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        <kernel@...gutronix.de>
Subject: Re: [PATCH v13 03/10] mux: minimal mux subsystem and gpio-based mux
 controller

On 2017-04-21 16:18, Philipp Zabel wrote:
> Hi Peter,
> 
> On Thu, 2017-04-13 at 18:43 +0200, Peter Rosin wrote:
> [...]
>> +int mux_control_select(struct mux_control *mux, int state)
> 
> state could be unsigned int for the consumer facing API.
> 
>> +{
>> +	int ret;
> 
> And mux_control_select should check that (0 <= state < mux->states).

Yes, that makes sense. I worried that we might end up with
signed/unsigned comparisons since the internal state still needs
to be signed, but that didn't happen when I tried...

I'll include this change in v14.

Cheers,
peda