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

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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>
This commit is contained in:
Laurent Pinchart 2010-05-11 10:36:32 -03:00 committed by Mauro Carvalho Chehab
parent fecfedeb27
commit 7181772d89
2 changed files with 14 additions and 21 deletions
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18
drivers/media/video/videobuf-dma-sg.c
View File

@ -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 @@ struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages)
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;

17
include/media/videobuf-dma-sg.h
View File

@ -24,23 +24,6 @@
/* --------------------------------------------------------------------- */
/*
* 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.
*/
struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages);
/*
* 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.
*/
struct scatterlist *videobuf_pages_to_sg(struct page **pages, int nr_pages,
int offset);
/* --------------------------------------------------------------------- */
/*
* A small set of helper functions to manage buffers (both userland
* and kernel) for DMA.