Commit a812a966 authored Oct 09, 2012 by Tomasz Stanislawski Committed by Mauro Carvalho Chehab Nov 25, 2012

[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>

parent d81e870d

drivers/media/v4l2-core/videobuf2-dma-contig.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);