V4L/DVB (7566): videobuf-dvb: allow its usage with videobuf-vmalloc

videobuf-dvb were still using a function that were videobuf-dma-sg
dependent. This patch creates a generic handler for this function. This
way, videobuf-dvb can now work with all videobuf implementations.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h
index 377a6c6..5b39a22 100644
--- a/include/media/videobuf-core.h
+++ b/include/media/videobuf-core.h
@@ -13,6 +13,9 @@
  * the Free Software Foundation; either version 2
  */
 
+#ifndef _VIDEOBUF_CORE_H
+#define _VIDEOBUF_CORE_H
+
 #include <linux/poll.h>
 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 #include <linux/videodev.h>
@@ -123,7 +126,8 @@
 struct videobuf_qtype_ops {
 	u32                     magic;
 
-	void* (*alloc)		(size_t size);
+	void *(*alloc)		(size_t size);
+	void *(*vmalloc)	(struct videobuf_buffer *buf);
 	int (*iolock)		(struct videobuf_queue* q,
 				 struct videobuf_buffer *vb,
 				 struct v4l2_framebuffer *fbuf);
@@ -185,6 +189,10 @@
 
 void *videobuf_alloc(struct videobuf_queue* q);
 
+/* Used on videobuf-dvb */
+void *videobuf_queue_to_vmalloc (struct videobuf_queue* q,
+				 struct videobuf_buffer *buf);
+
 void videobuf_queue_core_init(struct videobuf_queue *q,
 			 struct videobuf_queue_ops *ops,
 			 struct device *dev,
@@ -233,10 +241,4 @@
 int videobuf_mmap_mapper(struct videobuf_queue *q,
 			 struct vm_area_struct *vma);
 
-/* --------------------------------------------------------------------- */
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
+#endif