[media] Make DVB NET configurable in the kernel

Signed-off-by: Hans Petter Selasky <hselasky@c2i.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/Kconfig

@@ -68,7 +68,6 @@ config VIDEO_V4L2_SUBDEV_API
 
 config DVB_CORE
 	tristate "DVB for Linux"
-	depends on NET && INET
 	select CRC32
 	help
 	  DVB core utility functions for device handling, software fallbacks etc.
@@ -85,6 +84,17 @@ config DVB_CORE
 
 	  If unsure say N.
 
+config DVB_NET
+	bool "DVB Network Support"
+	default (NET && INET)
+	depends on NET && INET
+	help
+	  The DVB network support in the DVB core can
+	  optionally be disabled if this
+	  option is set to N.
+
+	  If unsure say Y.
+
 config VIDEO_MEDIA
 	tristate
 	default (DVB_CORE && (VIDEO_DEV = n)) || (VIDEO_DEV && (DVB_CORE = n)) || (DVB_CORE && VIDEO_DEV)

drivers/media/dvb/dvb-core/Makefile

@@ -2,8 +2,10 @@
 # Makefile for the kernel DVB device drivers.
 #
 
+dvb-net-$(CONFIG_DVB_NET) := dvb_net.o
+
 dvb-core-objs := dvbdev.o dmxdev.o dvb_demux.o dvb_filter.o 	\
 		 dvb_ca_en50221.o dvb_frontend.o 		\
-		 dvb_net.o dvb_ringbuffer.o dvb_math.o
+		 $(dvb-net-y) dvb_ringbuffer.o dvb_math.o
 
 obj-$(CONFIG_DVB_CORE) += dvb-core.o

drivers/media/dvb/dvb-core/dvb_net.h

@@ -32,6 +32,8 @@
 
 #define DVB_NET_DEVICES_MAX 10
 
+#ifdef CONFIG_DVB_NET
+
 struct dvb_net {
 	struct dvb_device *dvbdev;
 	struct net_device *device[DVB_NET_DEVICES_MAX];
@@ -45,3 +47,27 @@ void dvb_net_release(struct dvb_net *);
 int  dvb_net_init(struct dvb_adapter *, struct dvb_net *, struct dmx_demux *);
 
 #endif
+
+#ifndef CONFIG_DVB_NET
+
+struct dvb_dev_stub;
+
+struct dvb_net {
+	struct dvb_dev_stub *dvbdev;
+};
+
+static inline void dvb_net_release(struct dvb_net *dvbnet)
+{
+	dvbnet->dvbdev = 0;
+}
+
+static inline int dvb_net_init(struct dvb_adapter *adap,
+			       struct dvb_net *dvbnet, struct dmx_demux *dmx)
+{
+	dvbnet->dvbdev = (void *)1;
+	return 0;
+}
+
+#endif
+
+#endif