linux-kernel - Re: [PATCH 1/1] drivers: brcmaxi: provide amba axi functionality in separate module

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Message-Id: <201103301453.48607.arnd@arndb.de>
Date:	Wed, 30 Mar 2011 14:53:48 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Arend van Spriel <arend@...adcom.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	rmk+kernel@....linux.org.uk, devel@...uxdriverproject.org,
	gregkh@...e.de, linux-wireless@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>
Subject: Re: [PATCH 1/1] drivers: brcmaxi: provide amba axi functionality in separate module

On Tuesday 29 March 2011, Jiri Slaby wrote:
> On 03/29/2011 11:40 AM, Arend van Spriel wrote:
> > --- /dev/null
> > +++ b/drivers/brcmaxi/axi.c
> > @@ -0,0 +1,786 @@
> ...
> > +/* resetctrl */
> > +#define	AIRC_RESET		1
> > +
> > +/* definition for specifying padding fields */
> > +#define	_PADLINE(line)	pad ## line
> > +#define	_XSTR(line)	_PADLINE(line)
> > +#define	PAD		_XSTR(__LINE__)
> > +
> > +/*
> > + * struct aidmp - device management plugin "wrapper" registers.
> > + */
> > +struct aidmp {
> 
> This looks like it should be __packed__.

Why that? Adding the packed attribute would enforce byte access but
not change the layout of the structure, so I think that would make
it worse not better.

	Arnd
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