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Message-ID: <20201127093304.GA14976@lst.de>
Date:   Fri, 27 Nov 2020 10:33:04 +0100
From:   Christoph Hellwig <hch@....de>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Christoph Hellwig <hch@....de>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Michael Ellerman <mpe@...erman.id.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the dma-mapping tree

I fixed this as shown:

diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index c724548ca295c0..111249fd619de8 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -10,6 +10,7 @@
 #include <linux/pci.h>
 #include <asm/iommu.h>
 
+#ifdef CONFIG_ARCH_HAS_DMA_MAP_DIRECT
 #define can_map_direct(dev, addr) \
 	((dev)->bus_dma_limit >= phys_to_dma((dev), (addr)))
 
@@ -64,6 +65,7 @@ bool arch_dma_unmap_sg_direct(struct device *dev, struct scatterlist *sg,
 
 	return true;
 }
+#endif /* CONFIG_ARCH_HAS_DMA_MAP_DIRECT */
 
 /*
  * Generic iommu implementation

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