linux-kernel - Re: [PATCH][BUILD FAILURE 03/04] Next June 04:PPC64 randconfig [drivers/net/lance.o]

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Message-Id: <1245058981.12400.3.camel@pasglop>
Date:	Mon, 15 Jun 2009 19:43:01 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	subrata@...ux.vnet.ibm.com
Cc:	netdev@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
	Linuxppc-dev <Linuxppc-dev@...abs.org>,
	Sachin P Sant <sachinp@...ux.vnet.ibm.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Linux-Next <linux-next@...r.kernel.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [PATCH][BUILD FAILURE 03/04] Next June 04:PPC64 randconfig
 [drivers/net/lance.o]

On Mon, 2009-06-15 at 12:51 +0530, Subrata Modak wrote:
> On Mon, 2009-06-15 at 17:11 +1000, Benjamin Herrenschmidt wrote:
> > On Mon, 2009-06-15 at 12:21 +0530, Subrata Modak wrote:
> > 
> > > Benjamin,
> > > 
> > > I am not sure whether you liked the following patch to solve the above
> > > problem. Do, you want me address some other issue(s)/fixes for this ?
> > 
> > I suppose ... in fact some old PReP machines can even have ISA slots
> > iirc, but it's not going to do good with machines that have an iommu...
> > 
> > IE. Nobody should use that crap, period.
> 
> Great,
> 
> Can you please make some changes at drivers/net/Kconfig so that this guy
> does not build for the PPC64 systems ?

When I said "that crap" I was talking about those interfaces which I
-hope- are deprecated :-)

I suspect we never really sorted out the issue of DMA mapping for old
legacy ISA stuff... pci_map_* should work to some extent, though you
have to pass it the ISA bridge pci_dev.

Maybe it's time for somebody to start exposing a -proper- abstraction
accross all platforms for that :-)

Ben.


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