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[media] v4l: vb2-dma-contig: align buffer size to PAGE_SIZE 

Most operations on DMA and DMABUF framework require the size of a buffer to be
page aligned. This patch guarantees the requirement is satisfied for all
vb2-dma-contig buffers.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Tomasz Stanislawski 2012-10-09 14:07:41 -03:00 committed by Mauro Carvalho Chehab
parent d81e870d5a
commit a812a9665d
1 changed files with 3 additions and 0 deletions
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3
drivers/media/v4l2-core/videobuf2-dma-contig.c
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@ -162,6 +162,9 @@ static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size)
if (!buf)
return ERR_PTR(-ENOMEM);
/* align image size to PAGE_SIZE */
size = PAGE_ALIGN(size);
buf->vaddr = dma_alloc_coherent(dev, size, &buf->dma_addr, GFP_KERNEL);
if (!buf->vaddr) {
dev_err(dev, "dma_alloc_coherent of size %ld failed\n", size);