V4L/DVB (6292): videobuf_core init always require callback implementation

In the past, videobuf_queue_init were used to initialize PCI DMA videobuffers.
This patch renames it, to avoid confusion with the previous kernel API, doing:
	s/videobuf_queue_init/void videobuf_queue_core_init/

Also, the operations is now part of the function parameter. The function will
also add a test if this is defined, otherwise producing BUG.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 21 insertions, 15 deletions

diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index aa402abc4b0c..f5c5ea8b6b08 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -108,23 +108,25 @@ int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
 /* --------------------------------------------------------------------- */
 
 
-void videobuf_queue_init(struct videobuf_queue* q,
+void videobuf_queue_core_init(struct videobuf_queue* q,
                          struct videobuf_queue_ops *ops,
                          void *dev,
                          spinlock_t *irqlock,
                          enum v4l2_buf_type type,
                          enum v4l2_field field,
                          unsigned int msize,
-                         void *priv)
+                         void *priv,
+                         struct videobuf_qtype_ops *int_ops)
 {
         memset(q,0,sizeof(*q));
-        q->irqlock = irqlock;
-        q->dev     = dev;
-        q->type    = type;
-        q->field   = field;
-        q->msize   = msize;
-        q->ops     = ops;
+        q->irqlock   = irqlock;
+        q->dev       = dev;
+        q->type      = type;
+        q->field     = field;
+        q->msize     = msize;
+        q->ops       = ops;
         q->priv_data = priv;
+        q->int_ops   = int_ops;
 
         /* All buffer operations are mandatory */
         BUG_ON (!q->ops->buf_setup);
@@ -132,6 +134,9 @@ void videobuf_queue_init(struct videobuf_queue* q,
         BUG_ON (!q->ops->buf_queue);
         BUG_ON (!q->ops->buf_release);
 
+        /* Having implementations for abstract methods are mandatory */
+        BUG_ON (!q->int_ops);
+
         mutex_init(&q->lock);
         INIT_LIST_HEAD(&q->stream);
 }
@@ -966,7 +971,7 @@ EXPORT_SYMBOL_GPL(videobuf_iolock);
 
 EXPORT_SYMBOL_GPL(videobuf_alloc);
 
-EXPORT_SYMBOL_GPL(videobuf_queue_init);
+EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
 EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
 EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
 
diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index a38efe10feb4..8bb7fdd306d6 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -695,8 +695,8 @@ void videobuf_queue_pci_init(struct videobuf_queue* q,
                          unsigned int msize,
                          void *priv)
 {
-        videobuf_queue_init(q, ops, dev, irqlock, type, field, msize, priv);
-        q->int_ops=&pci_ops;
+        videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
+                                 priv, &pci_ops);
 }
 
 /* --------------------------------------------------------------------- */
diff --git a/drivers/media/video/videobuf-vmalloc.c b/drivers/media/video/videobuf-vmalloc.c
index c9d6ae0d3b49..2e3689a12a28 100644
--- a/drivers/media/video/videobuf-vmalloc.c
+++ b/drivers/media/video/videobuf-vmalloc.c
@@ -333,8 +333,8 @@ void videobuf_queue_vmalloc_init(struct videobuf_queue* q,
                          unsigned int msize,
                          void *priv)
 {
-        videobuf_queue_init(q, ops, dev, irqlock, type, field, msize, priv);
-        q->int_ops=&qops;
+        videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
+                                 priv, &qops);
 }
 
 EXPORT_SYMBOL_GPL(videobuf_queue_vmalloc_init);
diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h
index 9bae5a2eda66..9fa09fb800a1 100644
--- a/include/media/videobuf-core.h
+++ b/include/media/videobuf-core.h
@@ -181,14 +181,15 @@ int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
 
 void *videobuf_alloc(struct videobuf_queue* q);
 
-void videobuf_queue_init(struct videobuf_queue *q,
+void videobuf_queue_core_init(struct videobuf_queue *q,
                          struct videobuf_queue_ops *ops,
                          void *dev,
                          spinlock_t *irqlock,
                          enum v4l2_buf_type type,
                          enum v4l2_field field,
                          unsigned int msize,
-                         void *priv);
+                         void *priv,
+                         struct videobuf_qtype_ops *int_ops);
 int  videobuf_queue_is_busy(struct videobuf_queue *q);
 void videobuf_queue_cancel(struct videobuf_queue *q);