linux-kernel - Re: [PATCH 13/13] drivers/media/tuners/e4000.c: use macros for i2c

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Date:	Sun, 7 Oct 2012 20:56:19 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Joe Perches <joe@...ches.com>
cc:	Julia Lawall <julia.lawall@...6.fr>, walter harms <wharms@....de>,
	Antti Palosaari <crope@....fi>,
	kernel-janitors@...r.kernel.org, rmallon@...il.com,
	shubhrajyoti@...com, Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/13] drivers/media/tuners/e4000.c: use macros for
 i2c_msg initialization

>> Some people thought that it would be nice to have the macros rather than
>> the inlined field initializations, especially since there is no flag for
>> write.  A separate question is whether an array of one element is useful,
>> or whether one should systematically use & on a simple variable of the
>> structure type.  I'm open to suggestions about either point.
>
> I think the macro naming is not great.
>
> Maybe add DEFINE_/DECLARE_/_INIT or something other than an action
> name type to the macro names.

DEFINE and DECLARE usually have a declared variable as an argument, which 
is not the case here.

These macros are like the macros PCI_DEVICE and PCI_DEVICE_CLASS.

Are READ and WRITE the action names?  They are really the important 
information in this case.

> I think the consistency is better if all the references are done
> as arrays, even for single entry arrays.

Is it worth creating arrays where &msg is used?  Or would it be better to 
leave that aspect as it is?

julia
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