linux-kernel - Re: [RFC PATCH v5 13/14] media: tegra-video: Add CSI MIPI pads calibration

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Message-ID: <42f25a49-ad2b-4e52-fd99-cb0f52037988@nvidia.com>
Date:   Wed, 29 Jul 2020 17:52:51 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <frankc@...dia.com>, <hverkuil@...all.nl>,
        <sakari.ailus@....fi>, <robh+dt@...nel.org>,
        <helen.koike@...labora.com>
CC:     <sboyd@...nel.org>, <gregkh@...uxfoundation.org>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-i2c@...r.kernel.org>
Subject: Re: [RFC PATCH v5 13/14] media: tegra-video: Add CSI MIPI pads
 calibration


On 7/29/20 5:43 PM, Dmitry Osipenko wrote:
> 30.07.2020 03:27, Sowjanya Komatineni пишет:
> ...
>>>> Secondly, perhaps a failed calibration isn't a very critical error?
>>>> Hence just printing a warning message should be enough.
>>> Using dev_err to report calibration failure. Are you suggesting to use
>>> dev_warn instead of dev_err?
> I meant that failing s_stream might be unnecessary.
>
> The dev_warn should be more appropriate for a non-critical errors.
>
>>>> Could you please make a patch that factors all ON/OFF code paths into a
>>>> separate functions? It's a bit difficult to follow the combined code,
>>>> especially partial changes in the patches. Thanks in advance!
>>> what do you mean by partial changes in patches?
>>>
>>> Can you please be more clear?
>> Also please specify what ON/OFF code paths you are referring to when you
>> say to move into separate functions?
> I meant to change all the code like this:
>
> set(on) {
>      if (on) {
>         ...
>         return;
>      }
>
>      if (!on)
>        ...
>
>      return;
> }
>
> to somewhat like this:
>
> set(on) {
>      if (on)
>        ret = enable();
>      else
>        ret = disable();
>
>      return ret;
> }

You mean to change tegra_channel_set_stream() ?