linux-kernel - Re: linux-next: build failure after merge of the arm-soc tree

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Date:   Tue, 24 Nov 2020 10:18:04 +0100
From:   Christoph Hellwig <hch@....de>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
        ARM <linux-arm-kernel@...ts.infradead.org>,
        Maxime Ripard <maxime@...no.tech>,
        Christoph Hellwig <hch@....de>,
        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 arm-soc tree

On Tue, Nov 24, 2020 at 09:31:15AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the arm-soc tree, today's linux-next build (arm
> multi_v7_defconfig) failed like this:
> 
> drivers/soc/sunxi/sunxi_mbus.c: In function 'sunxi_mbus_notifier':
> drivers/soc/sunxi/sunxi_mbus.c:93:8: error: implicit declaration of function 'dma_direct_set_offset' [-Werror=implicit-function-declaration]
>    93 |  ret = dma_direct_set_offset(dev, PHYS_OFFSET, 0, SZ_4G);
>       |        ^~~~~~~~~~~~~~~~~~~~~
> 
> Caused by commit
> 
>   b4bdc4fbf8d0 ("soc: sunxi: Deal with the MBUS DMA offsets in a central place")
> 
> probably interacting with commit
> 
>   16fee29b0735 ("dma-mapping: remove the dma_direct_set_offset export")
> 
> which is also in the arm-soc tree ...

drivers/soc/sunxi/sunxi_mbus.c now needs an include of <linux/dma-map-ops.h>.