netdev - Re: [PATCH v2] gianfar: Add I/O barriers when touching buffer descriptor ownership.

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Message-ID: <4638F0C4.2000406@freescale.com>
Date:	Wed, 02 May 2007 15:12:52 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Kumar Gala <galak@...nel.crashing.org>
CC:	jgarzik@...ox.com, netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH v2] gianfar: Add I/O barriers when touching buffer descriptor
 ownership.

Kumar Gala wrote:
> I'd rather see a wmb() instead of eieio() to keep this code non-ppc  
> specific.  (also, we implement wmb as eieio, so I don't keep the  
> comment about it being too heavy, unless you mean generically).

wmb() is a sync, smp_wmb() is an eieio.  Andy told me he would not 
accept a sync in those spots.

And the driver is already ppc-specific; it uses in/out_be32.

-Scott
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