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

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Date:   Tue, 25 Oct 2016 11:12:23 -0500
From:   David Lechner <david@...hnology.com>
To:     Axel Haslam <ahaslam@...libre.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 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".