[media] dvb: move the dvb core one level up

just like the V4L2 core, move the DVB core to drivers/media, as the
intention is to get rid of both "video" and "dvb" directories.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

39 files changed, 17 insertions, 12197 deletions

diff --git a/drivers/media/dvb/Kconfig b/drivers/media/dvb/Kconfig
index 3a6ccbc02add..5a2c4bd75480 100644
--- a/drivers/media/dvb/Kconfig
+++ b/drivers/media/dvb/Kconfig
@@ -2,32 +2,6 @@
 # DVB device configuration
 #
 
-config DVB_MAX_ADAPTERS
-	int "maximum number of DVB/ATSC adapters"
-	depends on DVB_CORE
-	default 8
-	range 1 255
-	help
-	  Maximum number of DVB/ATSC adapters. Increasing this number
-	  increases the memory consumption of the DVB subsystem even
-	  if a much lower number of DVB/ATSC adapters is present.
-	  Only values in the range 4-32 are tested.
-
-	  If you are unsure about this, use the default value 8
-
-config DVB_DYNAMIC_MINORS
-	bool "Dynamic DVB minor allocation"
-	depends on DVB_CORE
-	default n
-	help
-	  If you say Y here, the DVB subsystem will use dynamic minor
-	  allocation for any device that uses the DVB major number.
-	  This means that you can have more than 4 of a single type
-	  of device (like demuxes and frontends) per adapter, but udev
-	  will be required to manage the device nodes.
-
-	  If you are unsure about this, say N here.
-
 menuconfig DVB_CAPTURE_DRIVERS
 	bool "DVB/ATSC adapters"
 	depends on DVB_CORE
diff --git a/drivers/media/dvb/Makefile b/drivers/media/dvb/Makefile
index 8f7e0129d70e..b14aa9dd0156 100644
--- a/drivers/media/dvb/Makefile
+++ b/drivers/media/dvb/Makefile
@@ -2,8 +2,7 @@
 # Makefile for the kernel multimedia device drivers.
 #
 
-obj-y        := dvb-core/	\
-		frontends/	\
+obj-y        :=	frontends/	\
 		ttpci/		\
 		ttusb-dec/	\
 		ttusb-budget/	\
diff --git a/drivers/media/dvb/b2c2/Makefile b/drivers/media/dvb/b2c2/Makefile
index 3d04a8dba99e..e4291e4aba23 100644
--- a/drivers/media/dvb/b2c2/Makefile
+++ b/drivers/media/dvb/b2c2/Makefile
@@ -12,5 +12,5 @@ obj-$(CONFIG_DVB_B2C2_FLEXCOP_PCI) += b2c2-flexcop-pci.o
 b2c2-flexcop-usb-objs = flexcop-usb.o
 obj-$(CONFIG_DVB_B2C2_FLEXCOP_USB) += b2c2-flexcop-usb.o
 
-ccflags-y += -Idrivers/media/dvb/dvb-core/ -Idrivers/media/dvb/frontends/
+ccflags-y += -Idrivers/media/dvb-core/ -Idrivers/media/dvb/frontends/
 ccflags-y += -Idrivers/media/common/tuners/
diff --git a/drivers/media/dvb/bt8xx/Makefile b/drivers/media/dvb/bt8xx/Makefile
index 0713b3af2050..7c2dd04d37e4 100644
--- a/drivers/media/dvb/bt8xx/Makefile
+++ b/drivers/media/dvb/bt8xx/Makefile
@@ -1,6 +1,6 @@
 obj-$(CONFIG_DVB_BT8XX) += bt878.o dvb-bt8xx.o dst.o dst_ca.o
 
-ccflags-y += -Idrivers/media/dvb/dvb-core
+ccflags-y += -Idrivers/media/dvb-core
 ccflags-y += -Idrivers/media/dvb/frontends
 ccflags-y += -Idrivers/media/video/bt8xx
 ccflags-y += -Idrivers/media/common/tuners
diff --git a/drivers/media/dvb/ddbridge/Makefile b/drivers/media/dvb/ddbridge/Makefile
index 38019bafb862..9eca27dd7328 100644
--- a/drivers/media/dvb/ddbridge/Makefile
+++ b/drivers/media/dvb/ddbridge/Makefile
@@ -6,7 +6,7 @@ ddbridge-objs := ddbridge-core.o
 
 obj-$(CONFIG_DVB_DDBRIDGE) += ddbridge.o
 
-ccflags-y += -Idrivers/media/dvb/dvb-core/
+ccflags-y += -Idrivers/media/dvb-core/
 ccflags-y += -Idrivers/media/dvb/frontends/
 ccflags-y += -Idrivers/media/common/tuners/
 
diff --git a/drivers/media/dvb/dm1105/Makefile b/drivers/media/dvb/dm1105/Makefile
index 95a008b71fe5..0dc5963ee807 100644
--- a/drivers/media/dvb/dm1105/Makefile
+++ b/drivers/media/dvb/dm1105/Makefile
@@ -1,3 +1,3 @@
 obj-$(CONFIG_DVB_DM1105) += dm1105.o
 
-ccflags-y += -Idrivers/media/dvb/dvb-core/ -Idrivers/media/dvb/frontends
+ccflags-y += -Idrivers/media/dvb-core/ -Idrivers/media/dvb/frontends
diff --git a/drivers/media/dvb/dvb-core/Makefile b/drivers/media/dvb/dvb-core/Makefile
deleted file mode 100644
index 8f22bcd7c1f9..000000000000
--- a/drivers/media/dvb/dvb-core/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# 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 		\
-		 $(dvb-net-y) dvb_ringbuffer.o dvb_math.o
-
-obj-$(CONFIG_DVB_CORE) += dvb-core.o
diff --git a/drivers/media/dvb/dvb-core/demux.h b/drivers/media/dvb/dvb-core/demux.h
deleted file mode 100644
index eb91fd808c16..000000000000
--- a/drivers/media/dvb/dvb-core/demux.h
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * demux.h
- *
- * Copyright (c) 2002 Convergence GmbH
- *
- * based on code:
- * Copyright (c) 2000 Nokia Research Center
- *                    Tampere, FINLAND
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
- */
-
-#ifndef __DEMUX_H
-#define __DEMUX_H
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/list.h>
-#include <linux/time.h>
-#include <linux/dvb/dmx.h>
-
-/*--------------------------------------------------------------------------*/
-/* Common definitions */
-/*--------------------------------------------------------------------------*/
-
-/*
- * DMX_MAX_FILTER_SIZE: Maximum length (in bytes) of a section/PES filter.
- */
-
-#ifndef DMX_MAX_FILTER_SIZE
-#define DMX_MAX_FILTER_SIZE 18
-#endif
-
-/*
- * DMX_MAX_SECFEED_SIZE: Maximum length (in bytes) of a private section feed filter.
- */
-
-#ifndef DMX_MAX_SECTION_SIZE
-#define DMX_MAX_SECTION_SIZE 4096
-#endif
-#ifndef DMX_MAX_SECFEED_SIZE
-#define DMX_MAX_SECFEED_SIZE (DMX_MAX_SECTION_SIZE + 188)
-#endif
-
-
-/*
- * enum dmx_success: Success codes for the Demux Callback API.
- */
-
-enum dmx_success {
-  DMX_OK = 0, /* Received Ok */
-  DMX_LENGTH_ERROR, /* Incorrect length */
-  DMX_OVERRUN_ERROR, /* Receiver ring buffer overrun */
-  DMX_CRC_ERROR, /* Incorrect CRC */
-  DMX_FRAME_ERROR, /* Frame alignment error */
-  DMX_FIFO_ERROR, /* Receiver FIFO overrun */
-  DMX_MISSED_ERROR /* Receiver missed packet */
-} ;
-
-/*--------------------------------------------------------------------------*/
-/* TS packet reception */
-/*--------------------------------------------------------------------------*/
-
-/* TS filter type for set() */
-
-#define TS_PACKET       1   /* send TS packets (188 bytes) to callback (default) */
-#define	TS_PAYLOAD_ONLY 2   /* in case TS_PACKET is set, only send the TS
-			       payload (<=184 bytes per packet) to callback */
-#define TS_DECODER      4   /* send stream to built-in decoder (if present) */
-#define TS_DEMUX        8   /* in case TS_PACKET is set, send the TS to
-			       the demux device, not to the dvr device */
-
-/* PES type for filters which write to built-in decoder */
-/* these should be kept identical to the types in dmx.h */
-
-enum dmx_ts_pes
-{  /* also send packets to decoder (if it exists) */
-	DMX_TS_PES_AUDIO0,
-	DMX_TS_PES_VIDEO0,
-	DMX_TS_PES_TELETEXT0,
-	DMX_TS_PES_SUBTITLE0,
-	DMX_TS_PES_PCR0,
-
-	DMX_TS_PES_AUDIO1,
-	DMX_TS_PES_VIDEO1,
-	DMX_TS_PES_TELETEXT1,
-	DMX_TS_PES_SUBTITLE1,
-	DMX_TS_PES_PCR1,
-
-	DMX_TS_PES_AUDIO2,
-	DMX_TS_PES_VIDEO2,
-	DMX_TS_PES_TELETEXT2,
-	DMX_TS_PES_SUBTITLE2,
-	DMX_TS_PES_PCR2,
-
-	DMX_TS_PES_AUDIO3,
-	DMX_TS_PES_VIDEO3,
-	DMX_TS_PES_TELETEXT3,
-	DMX_TS_PES_SUBTITLE3,
-	DMX_TS_PES_PCR3,
-
-	DMX_TS_PES_OTHER
-};
-
-#define DMX_TS_PES_AUDIO    DMX_TS_PES_AUDIO0
-#define DMX_TS_PES_VIDEO    DMX_TS_PES_VIDEO0
-#define DMX_TS_PES_TELETEXT DMX_TS_PES_TELETEXT0
-#define DMX_TS_PES_SUBTITLE DMX_TS_PES_SUBTITLE0
-#define DMX_TS_PES_PCR      DMX_TS_PES_PCR0
-
-
-struct dmx_ts_feed {
-	int is_filtering; /* Set to non-zero when filtering in progress */
-	struct dmx_demux *parent; /* Back-pointer */
-	void *priv; /* Pointer to private data of the API client */
-	int (*set) (struct dmx_ts_feed *feed,
-		    u16 pid,
-		    int type,
-		    enum dmx_ts_pes pes_type,
-		    size_t circular_buffer_size,
-		    struct timespec timeout);
-	int (*start_filtering) (struct dmx_ts_feed* feed);
-	int (*stop_filtering) (struct dmx_ts_feed* feed);
-};
-
-/*--------------------------------------------------------------------------*/
-/* Section reception */
-/*--------------------------------------------------------------------------*/
-
-struct dmx_section_filter {
-	u8 filter_value [DMX_MAX_FILTER_SIZE];
-	u8 filter_mask [DMX_MAX_FILTER_SIZE];
-	u8 filter_mode [DMX_MAX_FILTER_SIZE];
-	struct dmx_section_feed* parent; /* Back-pointer */
-	void* priv; /* Pointer to private data of the API client */
-};
-
-struct dmx_section_feed {
-	int is_filtering; /* Set to non-zero when filtering in progress */
-	struct dmx_demux* parent; /* Back-pointer */
-	void* priv; /* Pointer to private data of the API client */
-
-	int check_crc;
-	u32 crc_val;
-
-	u8 *secbuf;
-	u8 secbuf_base[DMX_MAX_SECFEED_SIZE];
-	u16 secbufp, seclen, tsfeedp;
-
-	int (*set) (struct dmx_section_feed* feed,
-		    u16 pid,
-		    size_t circular_buffer_size,
-		    int check_crc);
-	int (*allocate_filter) (struct dmx_section_feed* feed,
-				struct dmx_section_filter** filter);
-	int (*release_filter) (struct dmx_section_feed* feed,
-			       struct dmx_section_filter* filter);
-	int (*start_filtering) (struct dmx_section_feed* feed);
-	int (*stop_filtering) (struct dmx_section_feed* feed);
-};
-
-/*--------------------------------------------------------------------------*/
-/* Callback functions */
-/*--------------------------------------------------------------------------*/
-
-typedef int (*dmx_ts_cb) ( const u8 * buffer1,
-			   size_t buffer1_length,
-			   const u8 * buffer2,
-			   size_t buffer2_length,
-			   struct dmx_ts_feed* source,
-			   enum dmx_success success);
-
-typedef int (*dmx_section_cb) (	const u8 * buffer1,
-				size_t buffer1_len,
-				const u8 * buffer2,
-				size_t buffer2_len,
-				struct dmx_section_filter * source,
-				enum dmx_success success);
-
-/*--------------------------------------------------------------------------*/
-/* DVB Front-End */
-/*--------------------------------------------------------------------------*/
-
-enum dmx_frontend_source {
-	DMX_MEMORY_FE,
-	DMX_FRONTEND_0,
-	DMX_FRONTEND_1,
-	DMX_FRONTEND_2,
-	DMX_FRONTEND_3,
-	DMX_STREAM_0,    /* external stream input, e.g. LVDS */
-	DMX_STREAM_1,
-	DMX_STREAM_2,
-	DMX_STREAM_3
-};
-
-struct dmx_frontend {
-	struct list_head connectivity_list; /* List of front-ends that can
-					       be connected to a particular
-					       demux */
-	enum dmx_frontend_source source;
-};
-
-/*--------------------------------------------------------------------------*/
-/* MPEG-2 TS Demux */
-/*--------------------------------------------------------------------------*/
-
-/*
- * Flags OR'ed in the capabilities field of struct dmx_demux.
- */
-
-#define DMX_TS_FILTERING                        1
-#define DMX_PES_FILTERING                       2
-#define DMX_SECTION_FILTERING                   4
-#define DMX_MEMORY_BASED_FILTERING              8    /* write() available */
-#define DMX_CRC_CHECKING                        16
-#define DMX_TS_DESCRAMBLING                     32
-
-/*
- * Demux resource type identifier.
-*/
-
-/*
- * DMX_FE_ENTRY(): Casts elements in the list of registered
- * front-ends from the generic type struct list_head
- * to the type * struct dmx_frontend
- *.
-*/
-
-#define DMX_FE_ENTRY(list) list_entry(list, struct dmx_frontend, connectivity_list)
-
-struct dmx_demux {
-	u32 capabilities;            /* Bitfield of capability flags */
-	struct dmx_frontend* frontend;    /* Front-end connected to the demux */
-	void* priv;                  /* Pointer to private data of the API client */
-	int (*open) (struct dmx_demux* demux);
-	int (*close) (struct dmx_demux* demux);
-	int (*write) (struct dmx_demux* demux, const char __user *buf, size_t count);
-	int (*allocate_ts_feed) (struct dmx_demux* demux,
-				 struct dmx_ts_feed** feed,
-				 dmx_ts_cb callback);
-	int (*release_ts_feed) (struct dmx_demux* demux,
-				struct dmx_ts_feed* feed);
-	int (*allocate_section_feed) (struct dmx_demux* demux,
-				      struct dmx_section_feed** feed,
-				      dmx_section_cb callback);
-	int (*release_section_feed) (struct dmx_demux* demux,
-				     struct dmx_section_feed* feed);
-	int (*add_frontend) (struct dmx_demux* demux,
-			     struct dmx_frontend* frontend);
-	int (*remove_frontend) (struct dmx_demux* demux,
-				struct dmx_frontend* frontend);
-	struct list_head* (*get_frontends) (struct dmx_demux* demux);
-	int (*connect_frontend) (struct dmx_demux* demux,
-				 struct dmx_frontend* frontend);
-	int (*disconnect_frontend) (struct dmx_demux* demux);
-
-	int (*get_pes_pids) (struct dmx_demux* demux, u16 *pids);
-
-	int (*get_caps) (struct dmx_demux* demux, struct dmx_caps *caps);
-
-	int (*set_source) (struct dmx_demux* demux, const dmx_source_t *src);
-
-	int (*get_stc) (struct dmx_demux* demux, unsigned int num,
-			u64 *stc, unsigned int *base);
-};
-
-#endif /* #ifndef __DEMUX_H */
diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c
deleted file mode 100644
index 889c9c16c6df..000000000000
--- a/drivers/media/dvb/dvb-core/dmxdev.c
+++ /dev/null
@@ -1,1275 +0,0 @@
-/*
- * dmxdev.c - DVB demultiplexer device
- *
- * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
- *		      for convergence integrated media GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- *
- */
-
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/ioctl.h>
-#include <linux/wait.h>
-#include <asm/uaccess.h>
-#include "dmxdev.h"
-
-static int debug;
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
-
-#define dprintk	if (debug) printk
-
-static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf,
-				   const u8 *src, size_t len)
-{
-	ssize_t free;
-
-	if (!len)
-		return 0;
-	if (!buf->data)
-		return 0;
-
-	free = dvb_ringbuffer_free(buf);
-	if (len > free) {
-		dprintk("dmxdev: buffer overflow\n");
-		return -EOVERFLOW;
-	}
-
-	return dvb_ringbuffer_write(buf, src, len);
-}
-
-static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src,
-				      int non_blocking, char __user *buf,
-				      size_t count, loff_t *ppos)
-{
-	size_t todo;
-	ssize_t avail;
-	ssize_t ret = 0;
-
-	if (!src->data)
-		return 0;
-
-	if (src->error) {
-		ret = src->error;
-		dvb_ringbuffer_flush(src);
-		return ret;
-	}
-
-	for (todo = count; todo > 0; todo -= ret) {
-		if (non_blocking && dvb_ringbuffer_empty(src)) {
-			ret = -EWOULDBLOCK;
-			break;
-		}
-
-		ret = wait_event_interruptible(src->queue,
-					       !dvb_ringbuffer_empty(src) ||
-					       (src->error != 0));
-		if (ret < 0)
-			break;
-
-		if (src->error) {
-			ret = src->error;
-			dvb_ringbuffer_flush(src);
-			break;
-		}
-
-		avail = dvb_ringbuffer_avail(src);
-		if (avail > todo)
-			avail = todo;
-
-		ret = dvb_ringbuffer_read_user(src, buf, avail);
-		if (ret < 0)
-			break;
-
-		buf += ret;
-	}
-
-	return (count - todo) ? (count - todo) : ret;
-}
-
-static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type)
-{
-	struct list_head *head, *pos;
-
-	head = demux->get_frontends(demux);
-	if (!head)
-		return NULL;
-	list_for_each(pos, head)
-		if (DMX_FE_ENTRY(pos)->source == type)
-			return DMX_FE_ENTRY(pos);
-
-	return NULL;
-}
-
-static int dvb_dvr_open(struct inode *inode, struct file *file)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dmxdev *dmxdev = dvbdev->priv;
-	struct dmx_frontend *front;
-
-	dprintk("function : %s\n", __func__);
-
-	if (mutex_lock_interruptible(&dmxdev->mutex))
-		return -ERESTARTSYS;
-
-	if (dmxdev->exit) {
-		mutex_unlock(&dmxdev->mutex);
-		return -ENODEV;
-	}
-
-	if ((file->f_flags & O_ACCMODE) == O_RDWR) {
-		if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
-			mutex_unlock(&dmxdev->mutex);
-			return -EOPNOTSUPP;
-		}
-	}
-
-	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
-		void *mem;
-		if (!dvbdev->readers) {
-			mutex_unlock(&dmxdev->mutex);
-			return -EBUSY;
-		}
-		mem = vmalloc(DVR_BUFFER_SIZE);
-		if (!mem) {
-			mutex_unlock(&dmxdev->mutex);
-			return -ENOMEM;
-		}
-		dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
-		dvbdev->readers--;
-	}
-
-	if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
-		dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
-
-		if (!dmxdev->demux->write) {
-			mutex_unlock(&dmxdev->mutex);
-			return -EOPNOTSUPP;
-		}
-
-		front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
-
-		if (!front) {
-			mutex_unlock(&dmxdev->mutex);
-			return -EINVAL;
-		}
-		dmxdev->demux->disconnect_frontend(dmxdev->demux);
-		dmxdev->demux->connect_frontend(dmxdev->demux, front);
-	}
-	dvbdev->users++;
-	mutex_unlock(&dmxdev->mutex);
-	return 0;
-}
-
-static int dvb_dvr_release(struct inode *inode, struct file *file)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dmxdev *dmxdev = dvbdev->priv;
-
-	mutex_lock(&dmxdev->mutex);
-
-	if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
-		dmxdev->demux->disconnect_frontend(dmxdev->demux);
-		dmxdev->demux->connect_frontend(dmxdev->demux,
-						dmxdev->dvr_orig_fe);
-	}
-	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
-		dvbdev->readers++;
-		if (dmxdev->dvr_buffer.data) {
-			void *mem = dmxdev->dvr_buffer.data;
-			mb();
-			spin_lock_irq(&dmxdev->lock);
-			dmxdev->dvr_buffer.data = NULL;
-			spin_unlock_irq(&dmxdev->lock);
-			vfree(mem);
-		}
-	}
-	/* TODO */
-	dvbdev->users--;
-	if (dvbdev->users == 1 && dmxdev->exit == 1) {
-		fops_put(file->f_op);
-		file->f_op = NULL;
-		mutex_unlock(&dmxdev->mutex);
-		wake_up(&dvbdev->wait_queue);
-	} else
-		mutex_unlock(&dmxdev->mutex);
-
-	return 0;
-}
-
-static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
-			     size_t count, loff_t *ppos)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dmxdev *dmxdev = dvbdev->priv;
-	int ret;
-
-	if (!dmxdev->demux->write)
-		return -EOPNOTSUPP;
-	if ((file->f_flags & O_ACCMODE) != O_WRONLY)
-		return -EINVAL;
-	if (mutex_lock_interruptible(&dmxdev->mutex))
-		return -ERESTARTSYS;
-
-	if (dmxdev->exit) {
-		mutex_unlock(&dmxdev->mutex);
-		return -ENODEV;
-	}
-	ret = dmxdev->demux->write(dmxdev->demux, buf, count);
-	mutex_unlock(&dmxdev->mutex);
-	return ret;
-}
-
-static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
-			    loff_t *ppos)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dmxdev *dmxdev = dvbdev->priv;
-
-	if (dmxdev->exit)
-		return -ENODEV;
-
-	return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
-				      file->f_flags & O_NONBLOCK,
-				      buf, count, ppos);
-}
-
-static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev,
-				      unsigned long size)
-{
-	struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer;
-	void *newmem;
-	void *oldmem;
-
-	dprintk("function : %s\n", __func__);
-
-	if (buf->size == size)
-		return 0;
-	if (!size)
-		return -EINVAL;
-
-	newmem = vmalloc(size);
-	if (!newmem)
-		return -ENOMEM;
-
-	oldmem = buf->data;
-
-	spin_lock_irq(&dmxdev->lock);
-	buf->data = newmem;
-	buf->size = size;
-
-	/* reset and not flush in case the buffer shrinks */
-	dvb_ringbuffer_reset(buf);
-	spin_unlock_irq(&dmxdev->lock);
-
-	vfree(oldmem);
-
-	return 0;
-}
-
-static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter
-					       *dmxdevfilter, int state)
-{
-	spin_lock_irq(&dmxdevfilter->dev->lock);
-	dmxdevfilter->state = state;
-	spin_unlock_irq(&dmxdevfilter->dev->lock);
-}
-
-static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter,
-				      unsigned long size)
-{
-	struct dvb_ringbuffer *buf = &dmxdevfilter->buffer;
-	void *newmem;
-	void *oldmem;
-
-	if (buf->size == size)
-		return 0;
-	if (!size)
-		return -EINVAL;
-	if (dmxdevfilter->state >= DMXDEV_STATE_GO)
-		return -EBUSY;
-
-	newmem = vmalloc(size);
-	if (!newmem)
-		return -ENOMEM;
-
-	oldmem = buf->data;
-
-	spin_lock_irq(&dmxdevfilter->dev->lock);
-	buf->data = newmem;
-	buf->size = size;
-
-	/* reset and not flush in case the buffer shrinks */
-	dvb_ringbuffer_reset(buf);
-	spin_unlock_irq(&dmxdevfilter->dev->lock);
-
-	vfree(oldmem);
-
-	return 0;
-}
-
-static void dvb_dmxdev_filter_timeout(unsigned long data)
-{
-	struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data;
-
-	dmxdevfilter->buffer.error = -ETIMEDOUT;
-	spin_lock_irq(&dmxdevfilter->dev->lock);
-	dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT;
-	spin_unlock_irq(&dmxdevfilter->dev->lock);
-	wake_up(&dmxdevfilter->buffer.queue);
-}
-
-static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
-{
-	struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec;
-
-	del_timer(&dmxdevfilter->timer);
-	if (para->timeout) {
-		dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout;
-		dmxdevfilter->timer.data = (unsigned long)dmxdevfilter;
-		dmxdevfilter->timer.expires =
-		    jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
-		add_timer(&dmxdevfilter->timer);
-	}
-}
-
-static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
-				       const u8 *buffer2, size_t buffer2_len,
-				       struct dmx_section_filter *filter,
-				       enum dmx_success success)
-{
-	struct dmxdev_filter *dmxdevfilter = filter->priv;
-	int ret;
-
-	if (dmxdevfilter->buffer.error) {
-		wake_up(&dmxdevfilter->buffer.queue);
-		return 0;
-	}
-	spin_lock(&dmxdevfilter->dev->lock);
-	if (dmxdevfilter->state != DMXDEV_STATE_GO) {
-		spin_unlock(&dmxdevfilter->dev->lock);
-		return 0;
-	}
-	del_timer(&dmxdevfilter->timer);
-	dprintk("dmxdev: section callback %*ph\n", 6, buffer1);
-	ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
-				      buffer1_len);
-	if (ret == buffer1_len) {
-		ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
-					      buffer2_len);
-	}
-	if (ret < 0) {
-		dvb_ringbuffer_flush(&dmxdevfilter->buffer);
-		dmxdevfilter->buffer.error = ret;
-	}
-	if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
-		dmxdevfilter->state = DMXDEV_STATE_DONE;
-	spin_unlock(&dmxdevfilter->dev->lock);
-	wake_up(&dmxdevfilter->buffer.queue);
-	return 0;
-}
-
-stati