[media] videobuf-dma-contig: use vm_iomap_memory()
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>
diff --git a/drivers/media/v4l2-core/videobuf-dma-contig.c b/drivers/media/v4l2-core/videobuf-dma-contig.c
index 8204c88..65411adc 100644
--- a/drivers/media/v4l2-core/videobuf-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf-dma-contig.c
@@ -305,14 +305,9 @@
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);