[media] videobuf: make unused exported functions static

The videobuf_dma_init* and videobuf_dma_map() functions are no longer
used except in videobuf-dma-sg.c itself. Make them static.

These functions were abused in various drivers. All those drivers
have now been fixed, so by no longer exporting these functions
future abuse is now prevented.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2 files changed, 5 insertions, 18 deletions

diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index 3ff15f1c9d70..f669cedca8bd 100644
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -145,12 +145,11 @@ struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf)
 }
 EXPORT_SYMBOL_GPL(videobuf_to_dma);
 
-void videobuf_dma_init(struct videobuf_dmabuf *dma)
+static void videobuf_dma_init(struct videobuf_dmabuf *dma)
 {
         memset(dma, 0, sizeof(*dma));
         dma->magic = MAGIC_DMABUF;
 }
-EXPORT_SYMBOL_GPL(videobuf_dma_init);
 
 static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
                         int direction, unsigned long data, unsigned long size)
@@ -195,7 +194,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
         return 0;
 }
 
-int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
+static int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
                            unsigned long data, unsigned long size)
 {
         int ret;
@@ -206,9 +205,8 @@ int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
 
         return ret;
 }
-EXPORT_SYMBOL_GPL(videobuf_dma_init_user);
 
-int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
+static int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
                              int nr_pages)
 {
         int i;
@@ -267,9 +265,8 @@ out_free_pages:
         return -ENOMEM;
 
 }
-EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel);
 
-int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
+static int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
                               dma_addr_t addr, int nr_pages)
 {
         dprintk(1, "init overlay [%d pages @ bus 0x%lx]\n",
@@ -284,9 +281,8 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay);
 
-int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
+static int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
 {
         MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
         BUG_ON(0 == dma->nr_pages);
@@ -328,7 +324,6 @@ int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(videobuf_dma_map);
 
 int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
 {
diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h
index fb6fd4d8f4ed..d8b27854e3bf 100644
--- a/include/media/videobuf-dma-sg.h
+++ b/include/media/videobuf-dma-sg.h
@@ -84,16 +84,8 @@ struct videobuf_dma_sg_memory {
  * Despite the name, this is totally unrelated to videobuf, except that
  * videobuf-dma-sg uses the same API internally.
  */
-void videobuf_dma_init(struct videobuf_dmabuf *dma);
-int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
-                           unsigned long data, unsigned long size);
-int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
-                             int nr_pages);
-int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
-                              dma_addr_t addr, int nr_pages);
 int videobuf_dma_free(struct videobuf_dmabuf *dma);
 
-int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
 int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
 struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);