linux-kernel - Re: [PATCH/RFT v2 11/17] USB: OHCI: make ohci-da8xx a separate driver

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Message-ID: <CAKXjFTM8RwsAut8cD0n0foxueSjR4VB4k4WJizXo9SyaW3viOA@mail.gmail.com>
Date:   Tue, 25 Oct 2016 18:21:42 +0200
From:   Axel Haslam <ahaslam@...libre.com>
To:     David Lechner <david@...hnology.com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Johan Hovold <johan@...nel.org>, robh+dt@...nel.org,
        Sekhar Nori <nsekhar@...com>,
        Alan Stern <stern@...land.harvard.edu>,
        Kevin Hilman <khilman@...libre.com>,
        Sergei Shtylyov <sshtylyov@...mvista.com>,
        manjunath.goudar@...aro.org, Mark Brown <broonie@...nel.org>,
        Alexandre Bailon <abailon@...libre.com>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH/RFT v2 11/17] USB: OHCI: make ohci-da8xx a separate driver

On Tue, Oct 25, 2016 at 6:12 PM, David Lechner <david@...hnology.com> wrote:
> On 10/25/2016 02:39 AM, Axel Haslam wrote:
>>
>> On Tue, Oct 25, 2016 at 2:38 AM, David Lechner <david@...hnology.com>
>> wrote:
>>>
>>> On 10/24/2016 11:46 AM, ahaslam@...libre.com wrote:
>>>>
>>>>
>>>> -#ifndef CONFIG_ARCH_DAVINCI_DA8XX
>>>> -#error "This file is DA8xx bus glue.  Define
>>>> CONFIG_ARCH_DAVINCI_DA8XX."
>>>> -#endif
>>>> +#include "ohci.h"
>>>> +
>>>> +#define DRIVER_DESC "OHCI DA8XX driver"
>>>> +
>>>> +static const char hcd_name[] = "ohci-da8xx";
>>>
>>>
>>>
>>> why static const char instead of #define? This is only used one time in a
>>> pr_info, so it seems kind of pointless anyway.
>>
>>
>> Other drivers are using static const for the same variable.
>> i think static const is preferred over #define because #define doet give a
>> type.
>> If you dont mind ill keep it static const.
>>
>
> If this string was used in this file more than one place, I would agree with
> you, but currently it is only used as the argument of a pr_info(). The
> string "ohci-da8xx" could just be included in the fmt string instead of
> using "%s".

I think the purpose was to use it in the .name of the platform_driver
structure, too. only that not everybody is doing that, i looked at some bad
 examples :(

would you agree to keep it if we use it in .name too?

-Axel

>