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Date: Tue, 26 Sep 2017 08:10:19 +0200
From: Christoph Hellwig <hch@lst.de>
To: =?utf-8?B?6ZmI5Y2O5omN?= <chenhc@lemote.com>
Cc: Christoph Hellwig <hch@lst.de>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Fuxin Zhang <zhangfx@lemote.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
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        "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        linux-scsi <linux-scsi@vger.kernel.org>,
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        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Ivan Mikhaylov <ivan@ru.ibm.com>,
        Tariq Toukan <tariqt@mellanox.com>,
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        "Mark A . Greer" <mgreer@mvista.com>,
        Robert Baldyga <r.baldyga@samsung.com>,
        stable <stable@vger.kernel.org>
Subject: Re: [PATCH V7 1/2] dma-mapping: Rework dma_get_cache_alignment()
Message-ID: <20170926061019.GA6416@lst.de>
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On Tue, Sep 26, 2017 at 09:48:01AM +0800, 陈华才 wrote:
> Hi, Christoph,
> 
> Can I put the declaration in asm/dma-coherence.h?

Generally something not expose to the rest of the kernel (that is not
in arch/mips/include/) would be preferred, but in the end the architecture
maintainer will have to decide.

> And, last time you said it is OK to pass a NULL to dma_get_cache_alignment() and cc all driver maintainers. I have do so.

No, I asked you to converted everything to pass the struct device and
cc the driver maintainers.