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bh=XQSNSZywn2J5tIibcMqEyCRYg0DoENdsUd09NDa1qxo=; b=G8pUmhv4Myey3QeX61n+eU1VLVJ+YMU2wuYjMhY8UvLbD057TP8yUX9dhnbgDbJ4K+ 2thD3lN14O5PhuFPTb/iIs2WNDaWXUmbnIsSPDFok9zXU3Lj3Ly+PhcT8MCPUumX/J+G 4OkcJeuED+gsHS8CE4ykxnqvL0pVp9U04ePJRRgpv0vvWa4sj1U12GGY1AxE/TMiIbnr DE9et2AbXy8+BeyArfuXLpvUXyBtghJ6HH2imVFSycPkcCYysiIsGaI/Tl/MeOtxtB/m umSr2vesyb9L5sDk+6+5lxIn87C96AxJUELHx8gZpTeRHSVsBAUC/mIeU3dsz+tBCaQL +NYA== X-Gm-Message-State: APjAAAWw3ZXzqUFio6U1Q9MStAcVt0Z8+axoYmMlTdQZLlwHYovi83b1 beOaeIaFpcuKKpgHzk4QpEs= X-Google-Smtp-Source: APXvYqyMCj+Ghsusn8bhw1pE9GkbUM8F5CYPfXi5LJf73fYESAfpDuXDqO4AOj4QsBAxm3YNHO4Aug== X-Received: by 2002:a62:6086:: with SMTP id u128mr82559935pfb.148.1555415253653; Tue, 16 Apr 2019 04:47:33 -0700 (PDT) Received: from jordon-HP-15-Notebook-PC.domain.name ([49.207.50.11]) by smtp.gmail.com with ESMTPSA id p6sm55942835pfd.122.2019.04.16.04.47.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 16 Apr 2019 04:47:32 -0700 (PDT) From: Souptick Joarder To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, kirill.shutemov@linux.intel.com, vbabka@suse.cz, riel@surriel.com, sfr@canb.auug.org.au, rppt@linux.vnet.ibm.com, peterz@infradead.org, linux@armlinux.org.uk, robin.murphy@arm.com, iamjoonsoo.kim@lge.com, treding@nvidia.com, keescook@chromium.org, m.szyprowski@samsung.com, stefanr@s5r6.in-berlin.de, hjc@rock-chips.com, heiko@sntech.de, airlied@linux.ie, oleksandr_andrushchenko@epam.com, joro@8bytes.org, pawel@osciak.com, kyungmin.park@samsung.com, mchehab@kernel.org, boris.ostrovsky@oracle.com, jgross@suse.com Subject: [REBASE PATCH v5 6/9] iommu/dma-iommu.c: Convert to use vm_map_pages() Date: Tue, 16 Apr 2019 17:19:47 +0530 Message-Id: <80c3d220fc6ada73a88ce43ca049afb55a889258.1552921225.git.jrdr.linux@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190416_044734_777294_D3EB1E12 X-CRM114-Status: GOOD ( 11.33 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, xen-devel@lists.xen.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Souptick Joarder , linux1394-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Convert to use vm_map_pages() to map range of kernel memory to user vma. Signed-off-by: Souptick Joarder --- drivers/iommu/dma-iommu.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index d19f3d6..bacebff 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -620,17 +620,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp, int iommu_dma_mmap(struct page **pages, size_t size, struct vm_area_struct *vma) { - unsigned long uaddr = vma->vm_start; - unsigned int i, count = PAGE_ALIGN(size) >> PAGE_SHIFT; - int ret = -ENXIO; - - for (i = vma->vm_pgoff; i < count && uaddr < vma->vm_end; i++) { - ret = vm_insert_page(vma, uaddr, pages[i]); - if (ret) - break; - uaddr += PAGE_SIZE; - } - return ret; + return vm_map_pages(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT); } static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,