dma-buf: cleanup dma_buf_export() to make it easily extensible

At present, dma_buf_export() takes a series of parameters, which
makes it difficult to add any new parameters for exporters, if required.

Make it simpler by moving all these parameters into a struct, and pass
the struct * as parameter to dma_buf_export().

While at it, unite dma_buf_export_named() with dma_buf_export(), and
change all callers accordingly.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index bcde88572429..657ab302a5cf 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -368,11 +368,17 @@ static struct dma_buf *vb2_vmalloc_get_dmabuf(void *buf_priv, unsigned long flag
 {
         struct vb2_vmalloc_buf *buf = buf_priv;
         struct dma_buf *dbuf;
+        DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
+
+        exp_info.ops = &vb2_vmalloc_dmabuf_ops;
+        exp_info.size = buf->size;
+        exp_info.flags = flags;
+        exp_info.priv = buf;
 
         if (WARN_ON(!buf->vaddr))
                 return NULL;
 
-        dbuf = dma_buf_export(buf, &vb2_vmalloc_dmabuf_ops, buf->size, flags, NULL);
+        dbuf = dma_buf_export(&exp_info);
         if (IS_ERR(dbuf))
                 return NULL;