From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: mika.westerberg@linux.intel.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, David Miller <davem@davemloft.net>
Subject: Re: linux-next: build failure after merge of the final tree (net-next tree related)
Date: Fri, 21 Sep 2012 08:22:44 +1000 [thread overview]
Message-ID: <1348179764.1132.35.camel@pasglop> (raw)
In-Reply-To: <20120921081531.67db8a7d0ac1b35426b22c45@canb.auug.org.au>
> > I think the powerpc port is at fault here.
> >
> > Part of being able to advertise ISA_DMA_API is providing isa_virt_to_bus().
Hrm, that's ancient gunk, I'll have to dig. We potentially can support
ISA devices DMA'ing from an ISA bridge... but via the iommu, which means
isa_virt_to_bus is a non-starter.
But then, do we really care ? IE. Is there single device that actually
requires ISA_DMA_API and that is expected to work on any currently
supported powerpc hw ? :-)
We don't even support PReP anymore, so that leaves us with what ?
Anybody has an objection to turning ISA_DMA_API off ?
Cheers,
Ben.
next prev parent reply other threads:[~2012-09-20 22:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20120920173622.2aa7209cd241a3945f4384d4@canb.auug.org.au>
[not found] ` <20120920091013.GV15548@intel.com>
[not found] ` <20120920.164558.2281417114805373564.davem@davemloft.net>
2012-09-20 22:15 ` linux-next: build failure after merge of the final tree (net-next tree related) Stephen Rothwell
2012-09-20 22:22 ` Benjamin Herrenschmidt [this message]
2012-09-20 22:53 ` David Miller
2012-09-21 21:46 ` Benjamin Herrenschmidt
2012-09-22 20:00 ` David Miller
2012-09-22 21:20 ` Benjamin Herrenschmidt
2012-09-20 22:28 ` Stephen Rothwell
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