From mboxrd@z Thu Jan  1 00:00:00 1970
From: hch@lst.de (Christoph Hellwig)
Date: Wed, 13 Feb 2019 19:24:35 +0100
Subject: [PATCH 06/12] dma-mapping: improve selection of
 dma_declare_coherent availability
In-Reply-To: <CAL_JsqL+LiJTF5kZz2hXGbQcH+D4U0jAQE376VSUVMQmdg=XFA@mail.gmail.com>
References: <20190211133554.30055-1-hch@lst.de>
 <20190211133554.30055-7-hch@lst.de>
 <CAL_JsqL+LiJTF5kZz2hXGbQcH+D4U0jAQE376VSUVMQmdg=XFA@mail.gmail.com>
List-ID: <linux-snps-arc@lists.infradead.org>
Message-ID: <20190213182435.GA19906@lst.de>
To: linux-snps-arc@lists.infradead.org

On Tue, Feb 12, 2019@02:40:23PM -0600, Rob Herring wrote:
> > diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
> > index 3607fd2810e4..f8c66a9472a4 100644
> > --- a/drivers/of/Kconfig
> > +++ b/drivers/of/Kconfig
> > @@ -43,6 +43,7 @@ config OF_FLATTREE
> >
> >  config OF_EARLY_FLATTREE
> >         bool
> > +       select DMA_DECLARE_COHERENT
> 
> Is selecting DMA_DECLARE_COHERENT okay on UML? We run the unittests with UML.

No, that will fail with undefined references to memunmap.

I gues this needs to be

	select DMA_DECLARE_COHERENT if HAS_DMA

> Maybe we should just get rid of OF_RESERVED_MEM. If we support booting
> from DT, then it should always be enabled anyways.

Fine with me.  Do you want me to respin the series to just remove
it?