V4L/DVB: videobuf: Don't export videobuf_(vmalloc|pages)_to_sg

Those functions are only called inside videobuf-dma-sg.c, make them
static.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index 17b1f89e8133..8924e51408c1 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -57,7 +57,13 @@ MODULE_LICENSE("GPL");
 
 /* --------------------------------------------------------------------- */
 
-struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages)
+/*
+ * Return a scatterlist for some page-aligned vmalloc()'ed memory
+ * block (NULL on errors).  Memory for the scatterlist is allocated
+ * using kmalloc.  The caller must free the memory.
+ */
+static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt,
+                                                  int nr_pages)
 {
         struct scatterlist *sglist;
         struct page *pg;
@@ -81,10 +87,14 @@ err:
         vfree(sglist);
         return NULL;
 }
-EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg);
 
-struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages,
-                                         int offset)
+/*
+ * Return a scatterlist for a an array of userpages (NULL on errors).
+ * Memory for the scatterlist is allocated using kmalloc.  The caller
+ * must free the memory.
+ */
+static struct scatterlist *videobuf_pages_to_sg(struct page **pages,
+                                                int nr_pages, int offset)
 {
         struct scatterlist *sglist;
         int i;