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[media] videobuf-dma-contig: use vm_iomap_memory()

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vm_iomap_memory() provides a better end user interface than
remap_pfn_range(), as it does the needed tests before doing
mmap.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2013-04-17 08:22:16 -03:00
parent 4c8d558a14
commit 2a848b2c7f
1 changed files with 1 additions and 6 deletions
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7
drivers/media/v4l2-core/videobuf-dma-contig.c
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@ -305,14 +305,9 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
goto error;
/* Try to remap memory */
size = vma->vm_end - vma->vm_start;
size = (size < mem->size) ? size : mem->size;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
retval = remap_pfn_range(vma, vma->vm_start,
mem->dma_handle >> PAGE_SHIFT,
size, vma->vm_page_prot);
retval = vm_iomap_memory(vma, vma->vm_start, size);
if (retval) {
dev_err(q->dev, "mmap: remap failed with error %d. ",
retval);