netdev - Re: [PATCH net-next-2.6] sfc: Suppress warning about combining enum flags by gcc 4.5

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Date:	Tue, 17 May 2011 15:26:51 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	bhutchings@...arflare.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] sfc: Suppress warning about combining
 enum flags by gcc 4.5

From: Ben Hutchings <bhutchings@...arflare.com>
Date: Tue, 17 May 2011 19:48:41 +0100

> gcc 4.5 warns about switch statements on enumerated types containing
> case values that are a bitwise-or of two enumerators for that type.
> The use of enumerators as flags is common practice, so I think the
> warning is wrong.  Keep the compiler quiet by casting the switch
> value.
> 
> Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
> ---
> Will this do?

What part of "get rid of the enum" is so hard to understand?

I'll say it again: Please get rid of the enum efx_fc_type

You can define bit positions if you like, because those will
be used as a proper enum, as unique bit positions within
a set of bits.  Then you can define macros as (1 << XXX)

Thanks.
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