linux-kernel - Re: [PATCH 17/23] cx23885: Replace memcpy with struct assignment

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Date:	Tue, 23 Oct 2012 21:52:16 -0300
From:	Ezequiel Garcia <elezegarcia@...il.com>
To:	Andy Walls <awalls@...metrocast.net>
Cc:	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	Julia.Lawall@...6.fr, kernel-janitors@...r.kernel.org,
	Peter Senna Tschudin <peter.senna@...il.com>,
	stoth@...nellabs.com,
	Devin Heitmueller <dheitmueller@...nellabs.com>
Subject: Re: [PATCH 17/23] cx23885: Replace memcpy with struct assignment

(CCed Steven Toth and Devin Heitmueller)

On Tue, Oct 23, 2012 at 7:16 PM, Andy Walls <awalls@...metrocast.net> wrote:
> On Tue, 2012-10-23 at 16:57 -0300, Ezequiel Garcia wrote:
>> This kind of memcpy() is error-prone. Its replacement with a struct
>> assignment is prefered because it's type-safe and much easier to read.
>>
>> Found by coccinelle. Hand patched and reviewed.
>> Tested by compilation only.
>>
>> A simplified version of the semantic match that finds this problem is as
>> follows: (http://coccinelle.lip6.fr/)
>>
>> // <smpl>
>> @@
>> identifier struct_name;
>> struct struct_name to;
>> struct struct_name from;
>> expression E;
>> @@
>> -memcpy(&(to), &(from), E);
>> +to = from;
>> // </smpl>
>>
>> Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>
>> Signed-off-by: Ezequiel Garcia <elezegarcia@...il.com>
>
> This patch looks OK to me.  You forgot to CC: Steven Toth and/or Devin
> Heitmueller (I can't remember who did the VBI work.)

Done, thank you.

    Ezequiel
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