linux-kernel - Re: [PATCH] drivers: staging: lustre: lustre: include: add "__attribute_

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Date:	Sat, 18 Jan 2014 13:05:48 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Chen Gang <gang.chen.5i5j@...il.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, andreas.dilger@...el.com,
	bergwolf@...il.com, jinshan.xiong@...el.com, oleg.drokin@...el.com,
	jacques-charles.lafoucriere@....fr, devel@...verdev.osuosl.org,
	James Hogan <james.hogan@...tec.com>,
	linux-metag@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: staging: lustre: lustre: include: add
 "__attribute__((packed))" for the related union

On Sat, Jan 18, 2014 at 05:50:34PM +0800, Chen Gang wrote:
> Unfortunately, not all compilers assumes the structures within a pack
> region also need be packed (e.g. metag), so need add a pack explicitly
> to satisfy all compilers.
> 
> The related error (under metag with allmodconfig):
> 
>     CC [M]  drivers/staging/lustre/lustre/lov/lov_pack.o
>   drivers/staging/lustre/lustre/lov/lov_pack.c: In function 'lov_getstripe':
>   drivers/staging/lustre/lustre/lov/lov_pack.c:630: error: duplicate case value
>   drivers/staging/lustre/lustre/lov/lov_pack.c:630: error: previously used here
> 
> And originally, all related code used "__attribute__((packed))", so
> still use it instead of '__packed'.

Use __packed.  Then at least one line will be correct which is better
than nothing.

regards,
dan carpenter

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