From: Souptick Joarder <jrdr.linux@gmail.com>
To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com,
joro@8bytes.org, linux@armlinux.org.uk, robin.murphy@arm.com
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCHv2 6/9] iommu/dma-iommu.c: Convert to use vm_insert_range
Date: Thu, 31 Jan 2019 08:42:22 +0530 [thread overview]
Message-ID: <20190131031222.GA2356@jordon-HP-15-Notebook-PC> (raw)
Convert to use vm_insert_range() to map range of kernel
memory to user vma.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
---
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..bdf14b87 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_insert_range(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
}
static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
--
1.9.1
next reply other threads:[~2019-01-31 3:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 3:12 Souptick Joarder [this message]
2019-02-03 12:12 ` [PATCHv2 6/9] iommu/dma-iommu.c: Convert to use vm_insert_range Souptick Joarder
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