netdev - Re: [PATCH] CONFIG_PACKET_MMAP should depend on MMU

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Date:	Mon, 09 Apr 2007 17:50:22 +0800
From:	"Wu, Bryan" <bryan.wu@...log.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>, waltje@...lt.NL.Mugnet.ORG,
	Aubrey Li <aubreylee@...il.com>
Cc:	netdev@...r.kernel.org, Andrew Morton <akpm@...l.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] CONFIG_PACKET_MMAP should depend on MMU

On Mon, 2007-04-09 at 11:01 +0800, Aubrey Li wrote:
> The option CONFIG_PACKET_MMAP should depend on MMU.
> 
> Signed-off-by: Aubrey.Li <aubreylee@...il.com>
> ---
>  net/packet/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/net/packet/Kconfig b/net/packet/Kconfig
> index 34ff93f..959c272 100644
> --- a/net/packet/Kconfig
> +++ b/net/packet/Kconfig
> @@ -17,7 +17,7 @@ config PACKET
> 
>  config PACKET_MMAP
>  	bool "Packet socket: mmapped IO"
> -	depends on PACKET
> +	depends on PACKET && MMU
>  	help
>  	  If you say Y here, the Packet protocol driver will use an IO
>  	  mechanism that results in faster communication.

Yeah, this is a bug found on blackfin arch and it is also for other
NOMMU arch. Is there any solution for this? We think Aubrey's idea
works.

Thanks
-Bryan
-
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