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Date: Tue, 19 Sep 2017 17:02:52 +0200
From: Christoph Hellwig <hch@lst.de>
To: Huacai Chen <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@vger.kernel.org,
        "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        linux-scsi@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH V6 2/3] dma-mapping: Rework dma_get_cache_alignment()
        function
Message-ID: <20170919150252.GA23540@lst.de>
References: <1505811161-25246-1-git-send-email-chenhc@lemote.com> <1505811161-25246-2-git-send-email-chenhc@lemote.com>
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>  	mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * mdev->limits.mtt_seg_size,
> -					   dma_get_cache_alignment()) / mdev->limits.mtt_seg_size;
> +					   dma_get_cache_alignment(NULL)) / mdev->limits.mtt_seg_size;
>  
>  	mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,

Please pass the actually relevant struct device for each call.