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Message-ID: <20180323083134.GB23865@lst.de>
Date:   Fri, 23 Mar 2018 09:31:34 +0100
From:   Christoph Hellwig <hch@....de>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: linux-next: build warning after merge of the tip tree

On Fri, Mar 23, 2018 at 01:28:53PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the tip tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> lib/swiotlb.c:748:13: warning: 'swiotlb_free_buffer' defined but not used [-Wunused-function]
>  static bool swiotlb_free_buffer(struct device *dev, size_t size,
>              ^~~~~~~~~~~~~~~~~~~
> lib/swiotlb.c:706:1: warning: 'swiotlb_alloc_buffer' defined but not used [-Wunused-function]
>  swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
>  ^~~~~~~~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   16e73adbca76 ("dma/swiotlb: Remove swiotlb_{alloc,free}_coherent()")
> 
> These are now only used with CONFIG_DMA_DIRECT_OPS.

True.  I'll send a fixup.

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