[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>

1 files changed, 0 insertions, 2553 deletions

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
deleted file mode 100644
index 12e5eb1fff7..00000000000
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ /dev/null
@@ -1,2553 +0,0 @@
-/*
- * dvb_frontend.c: DVB frontend tuning interface/thread
- *
- *
- * Copyright (C) 1999-2001 Ralph  Metzler
- *			   Marcus Metzler
- *			   Holger Waechtler
- *				      for convergence integrated media GmbH
- *
- * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * 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 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.
- * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
- */
-
-/* Enables DVBv3 compatibility bits at the headers */
-#define __DVB_CORE__
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/semaphore.h>
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/freezer.h>
-#include <linux/jiffies.h>
-#include <linux/kthread.h>
-#include <asm/processor.h>
-
-#include "dvb_frontend.h"
-#include "dvbdev.h"
-#include <linux/dvb/version.h>
-
-static int dvb_frontend_debug;
-static int dvb_shutdown_timeout;
-static int dvb_force_auto_inversion;
-static int dvb_override_tune_delay;
-static int dvb_powerdown_on_sleep = 1;
-static int dvb_mfe_wait_time = 5;
-
-module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
-MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
-module_param(dvb_shutdown_timeout, int, 0644);
-MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
-module_param(dvb_force_auto_inversion, int, 0644);
-MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
-module_param(dvb_override_tune_delay, int, 0644);
-MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
-module_param(dvb_powerdown_on_sleep, int, 0644);
-MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
-module_param(dvb_mfe_wait_time, int, 0644);
-MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
-
-#define dprintk if (dvb_frontend_debug) printk
-
-#define FESTATE_IDLE 1
-#define FESTATE_RETUNE 2
-#define FESTATE_TUNING_FAST 4
-#define FESTATE_TUNING_SLOW 8
-#define FESTATE_TUNED 16
-#define FESTATE_ZIGZAG_FAST 32
-#define FESTATE_ZIGZAG_SLOW 64
-#define FESTATE_DISEQC 128
-#define FESTATE_ERROR 256
-#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
-#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
-#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
-#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
-
-#define FE_ALGO_HW		1
-/*
- * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
- * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
- * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
- * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
- * FESTATE_TUNED. The frontend has successfully locked on.
- * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
- * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
- * FESTATE_DISEQC. A DISEQC command has just been issued.
- * FESTATE_WAITFORLOCK. When we're waiting for a lock.
- * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
- * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
- * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
- */
-
-#define DVB_FE_NO_EXIT	0
-#define DVB_FE_NORMAL_EXIT	1
-#define DVB_FE_DEVICE_REMOVED	2
-
-static DEFINE_MUTEX(frontend_mutex);
-
-struct dvb_frontend_private {
-
-	/* thread/frontend values */
-	struct dvb_device *dvbdev;
-	struct dvb_frontend_parameters parameters_out;
-	struct dvb_fe_events events;
-	struct semaphore sem;
-	struct list_head list_head;
-	wait_queue_head_t wait_queue;
-	struct task_struct *thread;
-	unsigned long release_jiffies;
-	unsigned int exit;
-	unsigned int wakeup;
-	fe_status_t status;
-	unsigned long tune_mode_flags;
-	unsigned int delay;
-	unsigned int reinitialise;
-	int tone;
-	int voltage;
-
-	/* swzigzag values */
-	unsigned int state;
-	unsigned int bending;
-	int lnb_drift;
-	unsigned int inversion;
-	unsigned int auto_step;
-	unsigned int auto_sub_step;
-	unsigned int started_auto_step;
-	unsigned int min_delay;
-	unsigned int max_drift;
-	unsigned int step_size;
-	int quality;
-	unsigned int check_wrapped;
-	enum dvbfe_search algo_status;
-};
-
-static void dvb_frontend_wakeup(struct dvb_frontend *fe);
-static int dtv_get_frontend(struct dvb_frontend *fe,
-			    struct dvb_frontend_parameters *p_out);
-static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
-					   struct dvb_frontend_parameters *p);
-
-static bool has_get_frontend(struct dvb_frontend *fe)
-{
-	return fe->ops.get_frontend != NULL;
-}
-
-/*
- * Due to DVBv3 API calls, a delivery system should be mapped into one of
- * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
- * otherwise, a DVBv3 call will fail.
- */
-enum dvbv3_emulation_type {
-	DVBV3_UNKNOWN,
-	DVBV3_QPSK,
-	DVBV3_QAM,
-	DVBV3_OFDM,
-	DVBV3_ATSC,
-};
-
-static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
-{
-	switch (delivery_system) {
-	case SYS_DVBC_ANNEX_A:
-	case SYS_DVBC_ANNEX_C:
-		return DVBV3_QAM;
-	case SYS_DVBS:
-	case SYS_DVBS2:
-	case SYS_TURBO:
-	case SYS_ISDBS:
-	case SYS_DSS:
-		return DVBV3_QPSK;
-	case SYS_DVBT:
-	case SYS_DVBT2:
-	case SYS_ISDBT:
-	case SYS_DTMB:
-		return DVBV3_OFDM;
-	case SYS_ATSC:
-	case SYS_ATSCMH:
-	case SYS_DVBC_ANNEX_B:
-		return DVBV3_ATSC;
-	case SYS_UNDEFINED:
-	case SYS_ISDBC:
-	case SYS_DVBH:
-	case SYS_DAB:
-	default:
-		/*
-		 * Doesn't know how to emulate those types and/or
-		 * there's no frontend driver from this type yet
-		 * with some emulation code, so, we're not sure yet how
-		 * to handle them, or they're not compatible with a DVBv3 call.
-		 */
-		return DVBV3_UNKNOWN;
-	}
-}
-
-static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dvb_fe_events *events = &fepriv->events;
-	struct dvb_frontend_event *e;
-	int wp;
-
-	dprintk ("%s\n", __func__);
-
-	if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
-		dtv_get_frontend(fe, &fepriv->parameters_out);
-
-	mutex_lock(&events->mtx);
-
-	wp = (events->eventw + 1) % MAX_EVENT;
-	if (wp == events->eventr) {
-		events->overflow = 1;
-		events->eventr = (events->eventr + 1) % MAX_EVENT;
-	}
-
-	e = &events->events[events->eventw];
-	e->status = status;
-	e->parameters = fepriv->parameters_out;
-
-	events->eventw = wp;
-
-	mutex_unlock(&events->mtx);
-
-	wake_up_interruptible (&events->wait_queue);
-}
-
-static int dvb_frontend_get_event(struct dvb_frontend *fe,
-			    struct dvb_frontend_event *event, int flags)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dvb_fe_events *events = &fepriv->events;
-
-	dprintk ("%s\n", __func__);
-
-	if (events->overflow) {
-		events->overflow = 0;
-		return -EOVERFLOW;
-	}
-
-	if (events->eventw == events->eventr) {
-		int ret;
-
-		if (flags & O_NONBLOCK)
-			return -EWOULDBLOCK;
-
-		up(&fepriv->sem);
-
-		ret = wait_event_interruptible (events->wait_queue,
-						events->eventw != events->eventr);
-
-		if (down_interruptible (&fepriv->sem))
-			return -ERESTARTSYS;
-
-		if (ret < 0)
-			return ret;
-	}
-
-	mutex_lock(&events->mtx);
-	*event = events->events[events->eventr];
-	events->eventr = (events->eventr + 1) % MAX_EVENT;
-	mutex_unlock(&events->mtx);
-
-	return 0;
-}
-
-static void dvb_frontend_clear_events(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dvb_fe_events *events = &fepriv->events;
-
-	mutex_lock(&events->mtx);
-	events->eventr = events->eventw;
-	mutex_unlock(&events->mtx);
-}
-
-static void dvb_frontend_init(struct dvb_frontend *fe)
-{
-	dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
-		 fe->dvb->num,
-		 fe->id,
-		 fe->ops.info.name);
-
-	if (fe->ops.init)
-		fe->ops.init(fe);
-	if (fe->ops.tuner_ops.init) {
-		if (fe->ops.i2c_gate_ctrl)
-			fe->ops.i2c_gate_ctrl(fe, 1);
-		fe->ops.tuner_ops.init(fe);
-		if (fe->ops.i2c_gate_ctrl)
-			fe->ops.i2c_gate_ctrl(fe, 0);
-	}
-}
-
-void dvb_frontend_reinitialise(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	fepriv->reinitialise = 1;
-	dvb_frontend_wakeup(fe);
-}
-EXPORT_SYMBOL(dvb_frontend_reinitialise);
-
-static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
-{
-	int q2;
-
-	dprintk ("%s\n", __func__);
-
-	if (locked)
-		(fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
-	else
-		(fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
-
-	q2 = fepriv->quality - 128;
-	q2 *= q2;
-
-	fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
-}
-
-/**
- * Performs automatic twiddling of frontend parameters.
- *
- * @param fe The frontend concerned.
- * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
- * @returns Number of complete iterations that have been performed.
- */
-static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
-{
-	int autoinversion;
-	int ready = 0;
-	int fe_set_err = 0;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
-	int original_inversion = c->inversion;
-	u32 original_frequency = c->frequency;
-
-	/* are we using autoinversion? */
-	autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
-			 (c->inversion == INVERSION_AUTO));
-
-	/* setup parameters correctly */
-	while(!ready) {
-		/* calculate the lnb_drift */
-		fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
-
-		/* wrap the auto_step if we've exceeded the maximum drift */
-		if (fepriv->lnb_drift > fepriv->max_drift) {
-			fepriv->auto_step = 0;
-			fepriv->auto_sub_step = 0;
-			fepriv->lnb_drift = 0;
-		}
-
-		/* perform inversion and +/- zigzag */
-		switch(fepriv->auto_sub_step) {
-		case 0:
-			/* try with the current inversion and current drift setting */
-			ready = 1;
-			break;
-
-		case 1:
-			if (!autoinversion) break;
-
-			fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
-			ready = 1;
-			break;
-
-		case 2:
-			if (fepriv->lnb_drift == 0) break;
-
-			fepriv->lnb_drift = -fepriv->lnb_drift;
-			ready = 1;
-			break;
-
-		case 3:
-			if (fepriv->lnb_drift == 0) break;
-			if (!autoinversion) break;
-
-			fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
-			fepriv->lnb_drift = -fepriv->lnb_drift;
-			ready = 1;
-			break;
-
-		default:
-			fepriv->auto_step++;
-			fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
-			break;
-		}
-
-		if (!ready) fepriv->auto_sub_step++;
-	}
-
-	/* if this attempt would hit where we started, indicate a complete
-	 * iteration has occurred */
-	if ((fepriv->auto_step == fepriv->started_auto_step) &&
-	    (fepriv->auto_sub_step == 0) && check_wrapped) {
-		return 1;
-	}
-
-	dprintk("%s: drift:%i inversion:%i auto_step:%i "
-		"auto_sub_step:%i started_auto_step:%i\n",
-		__func__, fepriv->lnb_drift, fepriv->inversion,
-		fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
-
-	/* set the frontend itself */
-	c->frequency += fepriv->lnb_drift;
-	if (autoinversion)
-		c->inversion = fepriv->inversion;
-	tmp = *c;
-	if (fe->ops.set_frontend)
-		fe_set_err = fe->ops.set_frontend(fe);
-	*c = tmp;
-	if (fe_set_err < 0) {
-		fepriv->state = FESTATE_ERROR;
-		return fe_set_err;
-	}
-
-	c->frequency = original_frequency;
-	c->inversion = original_inversion;
-
-	fepriv->auto_sub_step++;
-	return 0;
-}
-
-static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
-{
-	fe_status_t s = 0;
-	int retval = 0;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
-
-	/* if we've got no parameters, just keep idling */
-	if (fepriv->state & FESTATE_IDLE) {
-		fepriv->delay = 3*HZ;
-		fepriv->quality = 0;
-		return;
-	}
-
-	/* in SCAN mode, we just set the frontend when asked and leave it alone */
-	if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
-		if (fepriv->state & FESTATE_RETUNE) {
-			tmp = *c;
-			if (fe->ops.set_frontend)
-				retval = fe->ops.set_frontend(fe);
-			*c = tmp;
-			if (retval < 0)
-				fepriv->state = FESTATE_ERROR;
-			else
-				fepriv->state = FESTATE_TUNED;
-		}
-		fepriv->delay = 3*HZ;
-		fepriv->quality = 0;
-		return;
-	}
-
-	/* get the frontend status */
-	if (fepriv->state & FESTATE_RETUNE) {
-		s = 0;
-	} else {
-		if (fe->ops.read_status)
-			fe->ops.read_status(fe, &s);
-		if (s != fepriv->status) {
-			dvb_frontend_add_event(fe, s);
-			fepriv->status = s;
-		}
-	}
-
-	/* if we're not tuned, and we have a lock, move to the TUNED state */
-	if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
-		dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
-		fepriv->state = FESTATE_TUNED;
-
-		/* if we're tuned, then we have determined the correct inversion */
-		if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
-		    (c->inversion == INVERSION_AUTO)) {
-			c->inversion = fepriv->inversion;
-		}
-		return;
-	}
-
-	/* if we are tuned already, check we're still locked */
-	if (fepriv->state & FESTATE_TUNED) {
-		dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
-
-		/* we're tuned, and the lock is still good... */
-		if (s & FE_HAS_LOCK) {
-			return;
-		} else { /* if we _WERE_ tuned, but now don't have a lock */
-			fepriv->state = FESTATE_ZIGZAG_FAST;
-			fepriv->started_auto_step = fepriv->auto_step;
-			fepriv->check_wrapped = 0;
-		}
-	}
-
-	/* don't actually do anything if we're in the LOSTLOCK state,
-	 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
-	if ((fepriv->state & FESTATE_LOSTLOCK) &&
-	    (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
-		dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
-		return;
-	}
-
-	/* don't do anything if we're in the DISEQC state, since this
-	 * might be someone with a motorized dish controlled by DISEQC.
-	 * If its actually a re-tune, there will be a SET_FRONTEND soon enough.	*/
-	if (fepriv->state & FESTATE_DISEQC) {
-		dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
-		return;
-	}
-
-	/* if we're in the RETUNE state, set everything up for a brand
-	 * new scan, keeping the current inversion setting, as the next
-	 * tune is _very_ likely to require the same */
-	if (fepriv->state & FESTATE_RETUNE) {
-		fepriv->lnb_drift = 0;
-		fepriv->auto_step = 0;
-		fepriv->auto_sub_step = 0;
-		fepriv->started_auto_step = 0;
-		fepriv->check_wrapped = 0;
-	}
-
-	/* fast zigzag. */
-	if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
-		fepriv->delay = fepriv->min_delay;
-
-		/* perform a tune */
-		retval = dvb_frontend_swzigzag_autotune(fe,
-							fepriv->check_wrapped);
-		if (retval < 0) {
-			return;
-		} else if (retval) {
-			/* OK, if we've run out of trials at the fast speed.
-			 * Drop back to slow for the _next_ attempt */
-			fepriv->state = FESTATE_SEARCHING_SLOW;
-			fepriv->started_auto_step = fepriv->auto_step;
-			return;
-		}
-		fepriv->check_wrapped = 1;
-
-		/* if we've just retuned, enter the ZIGZAG_FAST state.
-		 * This ensures we cannot return from an
-		 * FE_SET_FRONTEND ioctl before the first frontend tune
-		 * occurs */
-		if (fepriv->state & FESTATE_RETUNE) {
-			fepriv->state = FESTATE_TUNING_FAST;
-		}
-	}
-
-	/* slow zigzag */
-	if (fepriv->state & FESTATE_SEARCHING_SLOW) {
-		dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
-
-		/* Note: don't bother checking for wrapping; we stay in this
-		 * state until we get a lock */
-		dvb_frontend_swzigzag_autotune(fe, 0);
-	}
-}
-
-static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	if (fepriv->exit != DVB_FE_NO_EXIT)
-		return 1;
-
-	if (fepriv->dvbdev->writers == 1)
-		if (time_after_eq(jiffies, fepriv->release_jiffies +
-				  dvb_shutdown_timeout * HZ))
-			return 1;
-
-	return 0;
-}
-
-static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	if (fepriv->wakeup) {
-		fepriv->wakeup = 0;
-		return 1;
-	}
-	return dvb_frontend_is_exiting(fe);
-}
-
-static void dvb_frontend_wakeup(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	fepriv->wakeup = 1;
-	wake_up_interruptible(&fepriv->wait_queue);
-}
-
-static int dvb_frontend_thread(void *data)
-{
-	struct dvb_frontend *fe = data;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	fe_status_t s;
-	enum dvbfe_algo algo;
-
-	bool re_tune = false;
-
-	dprintk("%s\n", __func__);
-
-	fepriv->check_wrapped = 0;
-	fepriv->quality = 0;
-	fepriv->delay = 3*HZ;
-	fepriv->status = 0;
-	fepriv->wakeup = 0;
-	fepriv->reinitialise = 0;
-
-	dvb_frontend_init(fe);
-
-	set_freezable();
-	while (1) {
-		up(&fepriv->sem);	    /* is locked when we enter the thread... */
-restart:
-		wait_event_interruptible_timeout(fepriv->wait_queue,
-			dvb_frontend_should_wakeup(fe) || kthread_should_stop()
-				|| freezing(current),
-			fepriv->delay);
-
-		if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
-			/* got signal or quitting */
-			fepriv->exit = DVB_FE_NORMAL_EXIT;
-			break;
-		}
-
-		if (try_to_freeze())
-			goto restart;
-
-		if (down_interruptible(&fepriv->sem))
-			break;
-
-		if (fepriv->reinitialise) {
-			dvb_frontend_init(fe);
-			if (fe->ops.set_tone && fepriv->tone != -1)
-				fe->ops.set_tone(fe, fepriv->tone);
-			if (fe->ops.set_voltage && fepriv->voltage != -1)
-				fe->ops.set_voltage(fe, fepriv->voltage);
-			fepriv->reinitialise = 0;
-		}
-
-		/* do an iteration of the tuning loop */
-		if (fe->ops.get_frontend_algo) {
-			algo = fe->ops.get_frontend_algo(fe);
-			switch (algo) {
-			case DVBFE_ALGO_HW:
-				dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
-
-				if (fepriv->state & FESTATE_RETUNE) {
-					dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
-					re_tune = true;
-					fepriv->state = FESTATE_TUNED;
-				} else {
-					re_tune = false;
-				}
-
-				if (fe->ops.tune)
-					fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
-
-				if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
-					dprintk("%s: state changed, adding current state\n", __func__);
-					dvb_frontend_add_event(fe, s);
-					fepriv->status = s;
-				}
-				break;
-			case DVBFE_ALGO_SW:
-				dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
-				dvb_frontend_swzigzag(fe);
-				break;
-			case DVBFE_ALGO_CUSTOM:
-				dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
-				if (fepriv->state & FESTATE_RETUNE) {
-					dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__);
-					fepriv->state = FESTATE_TUNED;
-				}
-				/* Case where we are going to search for a carrier
-				 * User asked us to retune again for some reason, possibly
-				 * requesting a search with a new set of parameters
-				 */
-				if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
-					if (fe->ops.search) {
-						fepriv->algo_status = fe->ops.search(fe);
-						/* We did do a search as was requested, the flags are
-						 * now unset as well and has the flags wrt to search.
-						 */
-					} else {
-						fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
-					}
-				}
-				/* Track the carrier if the search was successful */
-				if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
-					fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
-					fepriv->delay = HZ / 2;
-				}
-				dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
-				fe->ops.read_status(fe, &s);
-				if (s != fepriv->status) {
-					dvb_frontend_add_event(fe, s); /* update event list */
-					fepriv->status = s;
-					if (!(s & FE_HAS_LOCK)) {
-						fepriv->delay = HZ / 10;
-						fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
-					} else {
-						fepriv->delay = 60 * HZ;
-					}
-				}
-				break;
-			default:
-				dprintk("%s: UNDEFINED ALGO !\n", __func__);
-				break;
-			}
-		} else {
-			dvb_frontend_swzigzag(fe);
-		}
-	}
-
-	if (dvb_powerdown_on_sleep) {
-		if (fe->ops.set_voltage)
-			fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
-		if (fe->ops.tuner_ops.sleep) {
-			if (fe->ops.i2c_gate_ctrl)
-				fe->ops.i2c_gate_ctrl(fe, 1);
-			fe->ops.tuner_ops.sleep(fe);
-			if (fe->ops.i2c_gate_ctrl)
-				fe->ops.i2c_gate_ctrl(fe, 0);
-		}
-		if (fe->ops.sleep)
-			fe->ops.sleep(fe);
-	}
-
-	fepriv->thread = NULL;
-	if (kthread_should_stop())
-		fepriv->exit = DVB_FE_DEVICE_REMOVED;
-	else
-		fepriv->exit = DVB_FE_NO_EXIT;
-	mb();
-
-	dvb_frontend_wakeup(fe);
-	return 0;
-}
-
-static void dvb_frontend_stop(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	dprintk ("%s\n", __func__);
-
-	fepriv->exit = DVB_FE_NORMAL_EXIT;
-	mb();
-
-	if (!fepriv->thread)
-		return;
-
-	kthread_stop(fepriv->thread);
-
-	sema_init(&fepriv->sem, 1);
-	fepriv->state = FESTATE_IDLE;
-
-	/* paranoia check in case a signal arrived */
-	if (fepriv->thread)
-		printk("dvb_frontend_stop: warning: thread %p won't exit\n",
-				fepriv->thread);
-}
-
-s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
-{
-	return ((curtime.tv_usec < lasttime.tv_usec) ?
-		1000000 - lasttime.tv_usec + curtime.tv_usec :
-		curtime.tv_usec - lasttime.tv_usec);
-}
-EXPORT_SYMBOL(timeval_usec_diff);
-
-static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
-{
-	curtime->tv_usec += add_usec;
-	if (curtime->tv_usec >= 1000000) {
-		curtime->tv_usec -= 1000000;
-		curtime->tv_sec++;
-	}
-}
-
-/*
- * Sleep until gettimeofday() > waketime + add_usec
- * This needs to be as precise as possible, but as the delay is
- * usually between 2ms and 32ms, it is done using a scheduled msleep
- * followed by usleep (normally a busy-wait loop) for the remainder
- */
-void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
-{
-	struct timeval lasttime;
-	s32 delta, newdelta;
-
-	timeval_usec_add(waketime, add_usec);
-
-	do_gettimeofday(&lasttime);
-	delta = timeval_usec_diff(lasttime, *waketime);
-	if (delta > 2500) {
-		msleep((delta - 1500) / 1000);
-		do_gettimeofday(&lasttime);
-		newdelta = timeval_usec_diff(lasttime, *waketime);
-		delta = (newdelta > delta) ? 0 : newdelta;
-	}
-	if (delta > 0)
-		udelay(delta);
-}
-EXPORT_SYMBOL(dvb_frontend_sleep_until);
-
-static int dvb_frontend_start(struct dvb_frontend *fe)
-{
-	int ret;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct task_struct *fe_thread;
-
-	dprintk ("%s\n", __func__);
-
-	if (fepriv->thread) {
-		if (fepriv->exit == DVB_FE_NO_EXIT)
-			return 0;
-		else
-			dvb_frontend_stop (fe);
-	}
-
-	if (signal_pending(current))
-		return -EINTR;
-	if (down_interruptible (&fepriv->sem))
-		return -EINTR;
-
-	fepriv->state = FESTATE_IDLE;
-	fepriv->exit = DVB_FE_NO_EXIT;
-	fepriv->thread = NULL;
-	mb();
-
-	fe_thread = kthread_run(dvb_frontend_thread, fe,
-		"kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
-	if (IS_ERR(fe_thread)) {
-		ret = PTR_ERR(fe_thread);
-		printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
-		up(&fepriv->sem);
-		return ret;
-	}
-	fepriv->thread = fe_thread;
-	return 0;
-}
-
-static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
-					u32 *freq_min, u32 *freq_max)
-{
-	*freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
-
-	if (fe->ops.info.frequency_max == 0)
-		*freq_max = fe->ops.tuner_ops.info.frequency_max;
-	else if (fe->ops.tuner_ops.info.frequency_max == 0)
-		*freq_max = fe->ops.info.frequency_max;
-	else
-		*freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
-
-	if (*freq_min == 0 || *freq_max == 0)
-		printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
-		       fe->dvb->num,fe->id);
-}
-
-static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
-{
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	u32 freq_min;
-	u32 freq_max;
-
-	/* range check: frequency */
-	dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
-	if ((freq_min && c->frequency < freq_min) ||
-	    (freq_max && c->frequency > freq_max)) {
-		printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
-		       fe->dvb->num, fe->id, c->frequency, freq_min, freq_max);
-		return -EINVAL;
-	}
-
-	/* range check: symbol rate */
-	switch (c->delivery_system) {
-	case SYS_DVBS:
-	case SYS_DVBS2:
-	case SYS_TURBO:
-	case SYS_DVBC_ANNEX_A:
-	case SYS_DVBC_ANNEX_C:
-		if ((fe->ops.info.symbol_rate_min &&
-		     c->symbol_rate < fe->ops.info.symbol_rate_min) ||
-		    (fe->ops.info.symbol_rate_max &&
-		     c->symbol_rate > fe->ops.info.symbol_rate_max)) {
-			printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
-			       fe->dvb->num, fe->id, c->symbol_rate,
-			       fe->ops.info.symbol_rate_min,
-			       fe->ops.info.symbol_rate_max);
-			return -EINVAL;
-		}
-	default:
-		break;
-	}
-
-	return 0;
-}
-
-static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
-{
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	int i;
-	u32 delsys;
-
-	delsys = c->delivery_system;
-	memset(c, 0, sizeof(struct dtv_frontend_properties));
-	c->delivery_system = delsys;
-
-	c->state = DTV_CLEAR;
-
-	dprintk("%s() Clearing cache for delivery system %d\n", __func__,
-		c->delivery_system);
-
-	c->transmission_mode = TRANSMISSION_MODE_AUTO;
-	c->bandwidth_hz = 0;	/* AUTO */
-	c->guard_interval = GUARD_INTERVAL_AUTO;
-	c->hierarchy = HIERARCHY_AUTO;
-	c->symbol_rate = 0;
-	c->code_rate_HP = FEC_AUTO;
-	c->code_rate_LP = FEC_AUTO;
-	c->fec_inner = FEC_AUTO;
-	c->rolloff = ROLLOFF_AUTO;
-	c->voltage = SEC_VOLTAGE_OFF;
-	c->sectone = SEC_TONE_OFF;
-	c->pilot = PILOT_AUTO;
-
-	c->isdbt_partial_reception = 0;
-	c->isdbt_sb_mode = 0;
-	c->isdbt_sb_subchannel = 0;
-	c->isdbt_sb_segment_idx = 0;
-	c->isdbt_sb_segment_count = 0;
-	c->isdbt_layer_enabled = 0;
-	for (i = 0; i < 3; i++) {
-		c->layer[i].fec = FEC_AUTO;
-		c->layer[i].modulation = QAM_AUTO;
-		c->layer[i].interleaving = 0;
-		c->layer[i].segment_count = 0;
-	}
-
-	c->isdbs_ts_id = 0;
-	c->dvbt2_plp_id = 0;
-
-	switch (c->delivery_system) {
-	case SYS_DVBS:
-	case SYS_DVBS2:
-	case SYS_TURBO:
-		c->modulation = QPSK;   /* implied for DVB-S in legacy API */
-		c->rolloff = ROLLOFF_35;/* implied for DVB-S */
-		break;
-	case SYS_ATSC:
-		c->modulation = VSB_8;
-		break;
-	default:
-		c->modulation = QAM_AUTO;
-		break;
-	}
-
-	return 0;
-}
-
-#define _DTV_CMD(n, s, b) \
-[n] = { \
-	.name = #n, \
-	.cmd  = n, \
-	.set  = s,\
-	.buffer = b \
-}
-
-static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
-	_DTV_CMD(DTV_TUNE, 1, 0),
-	_DTV_CMD(DTV_CLEAR, 1, 0),
-
-	/* Set */
-	_DTV_CMD(DTV_FREQUENCY, 1, 0),
-	_DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
-	_DTV_CMD(DTV_MODULATION, 1, 0),
-	_DTV_CMD(DTV_INVERSION, 1, 0),
-	_DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
-	_DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
-	_DTV_CMD(DTV_INNER_FEC, 1, 0),
-	_DTV_CMD(DTV_VOLTAGE, 1, 0),
-	_DTV_CMD(DTV_TONE, 1, 0),
-	_DTV_CMD(DTV_PILOT, 1, 0),
-	_DTV_CMD(DTV_ROLLOFF, 1, 0),
-	_DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
-	_DTV_CMD(DTV_HIERARCHY, 1, 0),
-	_DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
-	_DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
-	_DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
-	_DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
-	_DTV_CMD(DTV_INTERLEAVING, 1, 0),
-
-	_DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
-	_DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
-	_DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
-	_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
-
-	_DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
-	_DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
-
-	/* Get */
-	_DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
-	_DTV_CMD(DTV_API_VERSION, 0, 0),
-	_DTV_CMD(DTV_CODE_RATE_HP, 0, 0),
-	_DTV_CMD(DTV_CODE_RATE_LP, 0, 0),
-	_DTV_CMD(DTV_GUARD_INTERVAL, 0, 0),
-	_DTV_CMD(DTV_TRANSMISSION_MODE, 0, 0),
-	_DTV_CMD(DTV_HIERARCHY, 0, 0),
-	_DTV_CMD(DTV_INTERLEAVING, 0, 0),
-
-	_DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
-
-	_DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
-	_DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
-
-	_DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_PARADE_ID, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
-	_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
-};
-
-static void dtv_property_dump(struct dtv_property *tvp)
-{
-	int i;
-
-	if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
-		printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
-			__func__, tvp->cmd);
-		return;
-	}
-
-	dprintk("%s() tvp.cmd    = 0x%08x (%s)\n"
-		,__func__
-		,tvp->cmd
-		,dtv_cmds[ tvp->cmd ].name);
-
-	if(dtv_cmds[ tvp->cmd ].buffer) {
-
-		dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
-			,__func__
-			,tvp->u.buffer.len);
-
-		for(i = 0; i < tvp->u.buffer.len; i++)
-			dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
-				,__func__
-				,i
-				,tvp->u.buffer.data[i]);
-
-	} else
-		dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
-}
-
-/* Synchronise the legacy tuning parameters into the cache, so that demodulator
- * drivers can use a single set_frontend tuning function, regardless of whether
- * it's being used for the legacy or new API, reducing code and complexity.
- */
-static int dtv_property_cache_sync(struct dvb_frontend *fe,
-				   struct dtv_frontend_properties *c,
-				   const struct dvb_frontend_parameters *p)
-{
-	c->frequency = p->frequency;
-	c->inversion = p->inversion;
-
-	switch (dvbv3_type(c->delivery_system)) {
-	case DVBV3_QPSK:
-		dprintk("%s() Preparing QPSK req\n", __func__);
-		c->symbol_rate = p->u.qpsk.symbol_rate;
-		c->fec_inner = p->u.qpsk.fec_inner;
-		break;
-	case DVBV3_QAM:
-		dprintk("%s() Preparing QAM req\n", __func__);
-		c->symbol_rate = p->u.qam.symbol_rate;
-		c->fec_inner = p->u.qam.fec_inner;
-		c->modulation = p->u.qam.modulation;
-		break;
-	case DVBV3_OFDM:
-		dprintk("%s() Preparing OFDM req\n", __func__);
-		switch (p->u.ofdm.bandwidth) {
-		case BANDWIDTH_10_MHZ:
-			c->bandwidth_hz = 10000000;
-			break;
-		case BANDWIDTH_8_MHZ:
-			c->bandwidth_hz = 8000000;
-			break;
-		case BANDWIDTH_7_MHZ:
-			c->bandwidth_hz = 7000000;
-			break;
-		case BANDWIDTH_6_MHZ:
-			c->bandwidth_hz = 6000000;
-			break;
-		case BANDWIDTH_5_MHZ:
-			c->bandwidth_hz = 5000000;
-			break;
-		case BANDWIDTH_1_712_MHZ:
-			c->bandwidth_hz = 1712000;
-			break;
-		case BANDWIDTH_AUTO:
-			c->bandwidth_hz = 0;
-		}
-
-		c->code_rate_HP = p->u.ofdm.code_rate_HP;
-		c->code_rate_LP = p->u.ofdm.code_rate_LP;
-		c->modulation = p->u.ofdm.constellation;
-		c->transmission_mode = p->u.ofdm.transmission_mode;
-		c->guard_interval = p->u.ofdm.guard_interval;
-		c->hierarchy = p->u.ofdm.hierarchy_information;
-		break;
-	case DVBV3_ATSC:
-		dprintk("%s() Preparing ATSC req\n", __func__);
-		c->modulation = p->u.vsb.modulation;
-		if (c->delivery_system == SYS_ATSCMH)
-			break;
-		if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
-			c->delivery_system = SYS_ATSC;
-		else
-			c->delivery_system = SYS_DVBC_ANNEX_B;
-		break;
-	case DVBV3_UNKNOWN:
-		printk(KERN_ERR
-		       "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
-		       __func__, c->delivery_system);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/* Ensure the cached values are set correctly in the frontend
- * legacy tuning structures, for the advanced tuning API.
- */
-static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
-					    struct dvb_frontend_parameters *p)
-{
-	const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-
-	p->frequency = c->frequency;
-	p->inversion = c->inversion;
-
-	switch (dvbv3_type(c->delivery_system)) {
-	case DVBV3_UNKNOWN:
-		printk(KERN_ERR
-		       "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
-		       __func__, c->delivery_system);
-		return -EINVAL;
-	case DVBV3_QPSK:
-		dprintk("%s() Preparing QPSK req\n", __func__);
-		p->u.qpsk.symbol_rate = c->symbol_rate;
-		p->u.qpsk.fec_inner = c->fec_inner;
-		break;
-	case DVBV3_QAM:
-		dprintk("%s() Preparing QAM req\n", __func__);
-		p->u.qam.symbol_rate = c->symbol_rate;
-		p->u.qam.fec_inner = c->fec_inner;
-		p->u.qam.modulation = c->modulation;
-		break;
-	case DVBV3_OFDM:
-		dprintk("%s() Preparing OFDM req\n", __func__);
-
-		switch (c->bandwidth_hz) {
-		case 10000000:
-			p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
-			break;
-		case 8000000:
-			p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
-			break;
-		case 7000000:
-			p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
-			break;
-		case 6000000:
-			p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
-			break;
-		case 5000000:
-			p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
-			break;
-		case 1712000:
-			p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
-			break;
-		case 0:
-		default:
-			p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
-		}
-		p->u.ofdm.code_rate_HP = c->code_rate_HP;
-		p->u.ofdm.code_rate_LP = c->code_rate_LP;
-		p->u.ofdm.constellation = c->modulation;
-		p->u.ofdm.transmission_mode = c->transmission_mode;
-		p->u.ofdm.guard_interval = c->guard_interval;
-		p->u.ofdm.hierarchy_information = c->hierarchy;
-		break;
-	case DVBV3_ATSC:
-		dprintk("%s() Preparing VSB req\n", __func__);
-		p->u.vsb.modulation = c->modulation;
-		break;
-	}
-	return 0;
-}
-
-/**
- * dtv_get_frontend - calls a callback for retrieving DTV parameters
- * @fe:		struct dvb_frontend pointer
- * @c:		struct dtv_frontend_properties pointer (DVBv5 cache)
- * @p_out	struct dvb_frontend_parameters pointer (DVBv3 FE struct)
- *
- * This routine calls either the DVBv3 or DVBv5 get_frontend call.
- * If c is not null, it will update the DVBv5 cache struct pointed by it.
- * If p_out is not null, it will update the DVBv3 params pointed by it.
- */
-static int dtv_get_frontend(struct dvb_frontend *fe,
-			    struct dvb_frontend_parameters *p_out)
-{
-	int r;
-
-	if (fe->ops.get_frontend) {
-		r = fe->ops.get_frontend(fe);
-		if (unlikely(r < 0))
-			return r;
-		if (p_out)
-			dtv_property_legacy_params_sync(fe, p_out);
-		return 0;
-	}
-
-	/* As everything is in cache, get_frontend fops are always supported */
-	return 0;
-}
-
-static int dvb_frontend_ioctl_legacy(struct file *file,
-			unsigned int cmd, void *parg);
-static int dvb_frontend_ioctl_properties(struct file *file,
-			unsigned int cmd, void *parg);
-
-static int dtv_property_process_get(struct dvb_frontend *fe,
-				    const struct dtv_frontend_properties *c,
-				    struct dtv_property *tvp,
-				    struct file *file)
-{
-	int r, ncaps;
-
-	switch(tvp->cmd) {
-	case DTV_ENUM_DELSYS:
-		ncaps = 0;
-		while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
-			tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
-			ncaps++;
-		}
-		tvp->u.buffer.len = ncaps;
-		break;
-	case DTV_FREQUENCY:
-		tvp->u.data = c->frequency;
-		break;
-	case DTV_MODULATION:
-		tvp->u.data = c->modulation;
-		break;
-	case DTV_BANDWIDTH_HZ:
-		tvp->u.data = c->bandwidth_hz;
-		break;
-	case DTV_INVERSION:
-		tvp->u.data = c->inversion;
-		break;
-	case DTV_SYMBOL_RATE:
-		tvp->u.data = c->symbol_rate;
-		break;
-	case DTV_INNER_FEC:
-		tvp->u.data = c->fec_inner;
-		break;
-	case DTV_PILOT:
-		tvp->u.data = c->pilot;
-		break;
-	case DTV_ROLLOFF:
-		tvp->u.data = c->rolloff;
-		break;
-	case DTV_DELIVERY_SYSTEM:
-		tvp->u.data = c->delivery_system;
-		break;
-	case DTV_VOLTAGE:
-		tvp->u.data = c->voltage;
-		break;
-	case DTV_TONE:
-		tvp->u.data = c->sectone;
-		break;
-	case DTV_API_VERSION:
-		tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
-		break;
-	case DTV_CODE_RATE_HP:
-		tvp->u.data = c->code_rate_HP;
-		break;
-	case DTV_CODE_RATE_LP:
-		tvp->u.data = c->code_rate_LP;
-		break;
-	case DTV_GUARD_INTERVAL:
-		tvp->u.data = c->guard_interval;
-		break;
-	case DTV_TRANSMISSION_MODE:
-		tvp->u.data = c->transmission_mode;
-		break;
-	case DTV_HIERARCHY:
-		tvp->u.data = c->hierarchy;
-		break;
-	case DTV_INTERLEAVING:
-		tvp->u.data = c->interleaving;
-		break;
-
-	/* ISDB-T Support here */
-	case DTV_ISDBT_PARTIAL_RECEPTION:
-		tvp->u.data = c->isdbt_partial_reception;
-		break;
-	case DTV_ISDBT_SOUND_BROADCASTING:
-		tvp->u.data = c->isdbt_sb_mode;
-		break;
-	case DTV_ISDBT_SB_SUBCHANNEL_ID:
-		tvp->u.data = c->isdbt_sb_subchannel;
-		break;
-	case DTV_ISDBT_SB_SEGMENT_IDX:
-		tvp->u.data = c->isdbt_sb_segment_idx;
-		break;
-	case DTV_ISDBT_SB_SEGMENT_COUNT:
-		tvp->u.data = c->isdbt_sb_segment_count;
-		break;
-	case DTV_ISDBT_LAYER_ENABLED:
-		tvp->u.data = c->isdbt_layer_enabled;
-		break;
-	case DTV_ISDBT_LAYERA_FEC:
-		tvp->u.data = c->layer[0].fec;
-		break;
-	case DTV_ISDBT_LAYERA_MODULATION:
-		tvp->u.data = c->layer[0].modulation;
-		break;
-	case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
-		tvp->u.data = c->layer[0].segment_count;
-		break;
-	case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
-		tvp->u.data = c->layer[0].interleaving;
-		break;
-	case DTV_ISDBT_LAYERB_FEC:
-		tvp->u.data = c->layer[1].fec;
-		break;
-	case DTV_ISDBT_LAYERB_MODULATION:
-		tvp->u.data = c->layer[1].modulation;
-		break;
-	case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
-		tvp->u.data = c->layer[1].segment_count;
-		break;
-	case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
-		tvp->u.data = c->layer[1].interleaving;
-		break;
-	case DTV_ISDBT_LAYERC_FEC:
-		tvp->u.data = c->layer[2].fec;
-		break;
-	case DTV_ISDBT_LAYERC_MODULATION:
-		tvp->u.data = c->layer[2].modulation;
-		break;
-	case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
-		tvp->u.data = c->layer[2].segment_count;
-		break;
-	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
-		tvp->u.data = c->layer[2].interleaving;
-		break;
-	case DTV_ISDBS_TS_ID:
-		tvp->u.data = c->isdbs_ts_id;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		tvp->u.data = c->dvbt2_plp_id;
-		break;
-
-	/* ATSC-MH */
-	case DTV_ATSCMH_FIC_VER:
-		tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
-		break;
-	case DTV_ATSCMH_PARADE_ID:
-		tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
-		break;
-	case DTV_ATSCMH_NOG:
-		tvp->u.data = fe->dtv_property_cache.atscmh_nog;
-		break;
-	case DTV_ATSCMH_TNOG:
-		tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
-		break;
-	case DTV_ATSCMH_SGN:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
-		break;
-	case DTV_ATSCMH_PRC:
-		tvp->u.data = fe->dtv_property_cache.atscmh_prc;
-		break;
-	case DTV_ATSCMH_RS_FRAME_MODE:
-		tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
-		break;
-	case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
-		tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
-		break;
-	case DTV_ATSCMH_RS_CODE_MODE_PRI:
-		tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
-		break;
-	case DTV_ATSCMH_RS_CODE_MODE_SEC:
-		tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
-		break;
-	case DTV_ATSCMH_SCCC_BLOCK_MODE:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
-		break;
-	case DTV_ATSCMH_SCCC_CODE_MODE_A:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
-		break;
-	case DTV_ATSCMH_SCCC_CODE_MODE_B:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
-		break;
-	case DTV_ATSCMH_SCCC_CODE_MODE_C:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
-		break;
-	case DTV_ATSCMH_SCCC_CODE_MODE_D:
-		tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	/* Allow the frontend to override outgoing properties */
-	if (fe->ops.get_property) {
-		r = fe->ops.get_property(fe, tvp);
-		if (r < 0)
-			return r;
-	}
-
-	dtv_property_dump(tvp);
-
-	return 0;
-}
-
-static int dtv_set_frontend(struct dvb_frontend *fe);
-
-static bool is_dvbv3_delsys(u32 delsys)
-{
-	bool status;
-
-	status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
-		 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
-
-	return status;
-}
-
-static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system)
-{
-	int ncaps, i;
-	u32 delsys = SYS_UNDEFINED;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	enum dvbv3_emulation_type type;
-
-	/*
-	 * It was reported that some old DVBv5 applications were
-	 * filling delivery_system with SYS_UNDEFINED. If this happens,
-	 * assume that the application wants to use the first supported
-	 * delivery system.
-	 */
-	if (c->delivery_system == SYS_UNDEFINED)
-	        c->delivery_system = fe->ops.delsys[0];
-
-	if (desired_system == SYS_UNDEFINED) {
-		/*
-		 * A DVBv3 call doesn't know what's the desired system.
-		 * Also, DVBv3 applications don't know that ops.info->type
-		 * could be changed, and they simply dies when it doesn't
-		 * match.
-		 * So, don't change the current delivery system, as it
-		 * may be trying to do the wrong thing, like setting an
-		 * ISDB-T frontend as DVB-T. Instead, find the closest
-		 * DVBv3 system that matches the delivery system.
-		 */
-		if (is_dvbv3_delsys(c->delivery_system)) {
-			dprintk("%s() Using delivery system to %d\n",
-				__func__, c->delivery_system);
-			return 0;
-		}
-		type = dvbv3_type(c->delivery_system);
-		switch (type) {
-		case DVBV3_QPSK:
-			desired_system = SYS_DVBS;
-			break;
-		case DVBV3_QAM:
-			desired_system = SYS_DVBC_ANNEX_A;
-			break;
-		case DVBV3_ATSC:
-			desired_system = SYS_ATSC;
-			break;
-		case DVBV3_OFDM:
-			desired_system = SYS_DVBT;
-			break;
-		default:
-			dprintk("%s(): This frontend doesn't support DVBv3 calls\n",
-				__func__);
-			return -EINVAL;
-		}
-		/*
-		 * Get a delivery system that is compatible with DVBv3
-		 * NOTE: in order for this to work with softwares like Kaffeine that
-		 *	uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
-		 *	DVB-S, drivers that support both should put the SYS_DVBS entry
-		 *	before the SYS_DVBS2, otherwise it won't switch back to DVB-S.
-		 *	The real fix is that userspace applications should not use DVBv3
-		 *	and not trust on calling FE_SET_FRONTEND to switch the delivery
-		 *	system.
-		 */
-		ncaps = 0;
-		while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
-			if (fe->ops.delsys[ncaps] == desired_system) {
-				delsys = desired_system;
-				break;
-			}
-			ncaps++;
-		}
-		if (delsys == SYS_UNDEFINED) {
-			dprintk("%s() Couldn't find a delivery system that matches %d\n",
-				__func__, desired_system);
-		}
-	} else {
-		/*
-		 * This is a DVBv5 call. So, it likely knows the supported
-		 * delivery systems.
-		 */
-
-		/* Check if the desired delivery system is supported */
-		ncaps = 0;
-		while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
-			if (fe->ops.delsys[ncaps] == desired_system) {
-				c->delivery_system = desired_system;
-				dprintk("%s() Changing delivery system to %d\n",
-					__func__, desired_system);
-				return 0;
-			}
-			ncaps++;
-		}
-		type = dvbv3_type(desired_system);
-
-		/*
-		 * The delivery system is not supported. See if it can be
-		 * emulated.
-		 * The emulation only works if the desired system is one of the
-		 * DVBv3 delivery systems
-		 */
-		if (!is_dvbv3_delsys(desired_system)) {
-			dprintk("%s() can't use a DVBv3 FE_SET_FRONTEND call on this frontend\n",
-				__func__);
-			return -EINVAL;
-		}
-
-		/*
-		 * Get the last non-DVBv3 delivery system that has the same type
-		 * of the desired system
-		 */
-		ncaps = 0;
-		while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
-			if ((dvbv3_type(fe->ops.delsys[ncaps]) == type) &&
-			    !is_dvbv3_delsys(fe->ops.delsys[ncaps]))
-				delsys = fe->ops.delsys[ncaps];
-			ncaps++;
-		}
-		/* There's nothing compatible with the desired delivery system */
-		if (delsys == SYS_UNDEFINED) {
-			dprintk("%s() Incompatible DVBv3 FE_SET_FRONTEND call for this frontend\n",
-				__func__);
-			return -EINVAL;
-		}
-	}
-
-	c->delivery_system = delsys;
-
-	/*
-	 * The DVBv3 or DVBv5 call is requesting a different system. So,
-	 * emulation is needed.
-	 *
-	 * Emulate newer delivery systems like ISDBT, DVBT and DTMB
-	 * for older DVBv5 applications. The emulation will try to use
-	 * the auto mode for most things, and will assume that the desired
-	 * delivery system is the last one at the ops.delsys[] array
-	 */
-	dprintk("%s() Using delivery system %d emulated as if it were a %d\n",
-		__func__, delsys, desired_system);
-
-	/*
-	 * For now, handles ISDB-T calls. More code may be needed here for the
-	 * other emulated stuff
-	 */
-	if (type == DVBV3_OFDM) {
-		if (c->delivery_system == SYS_ISDBT) {
-			dprintk("%s() Using defaults for SYS_ISDBT\n",
-				__func__);
-			if (!c->bandwidth_hz)
-				c->bandwidth_hz = 6000000;
-
-			c->isdbt_partial_reception = 0;
-			c->isdbt_sb_mode = 0;
-			c->isdbt_sb_subchannel = 0;
-			c->isdbt_sb_segment_idx = 0;
-			c->isdbt_sb_segment_count = 0;
-			c->isdbt_layer_enabled = 0;
-			for (i = 0; i < 3; i++) {
-				c->layer[i].fec = FEC_AUTO;
-				c->layer[i].modulation = QAM_AUTO;
-				c->layer[i].interleaving = 0;
-				c->layer[i].segment_count = 0;
-			}
-		}
-	}
-	dprintk("change delivery system on cache to %d\n", c->delivery_system);
-
-	return 0;
-}
-
-static int dtv_property_process_set(struct dvb_frontend *fe,
-				    struct dtv_property *tvp,
-				    struct file *file)
-{
-	int r = 0;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-
-	/* Allow the frontend to validate incoming properties */
-	if (fe->ops.set_property) {
-		r = fe->ops.set_property(fe, tvp);
-		if (r < 0)
-			return r;
-	}
-
-	switch(tvp->cmd) {
-	case DTV_CLEAR:
-		/*
-		 * Reset a cache of data specific to the frontend here. This does
-		 * not effect hardware.
-		 */
-		dvb_frontend_clear_cache(fe);
-		break;
-	case DTV_TUNE:
-		/* interpret the cache of data, build either a traditional frontend
-		 * tunerequest so we can pass validation in the FE_SET_FRONTEND
-		 * ioctl.
-		 */
-		c->state = tvp->cmd;
-		dprintk("%s() Finalised property cache\n", __func__);
-
-		r = dtv_set_frontend(fe);
-		break;
-	case DTV_FREQUENCY:
-		c->frequency = tvp->u.data;
-		break;
-	case DTV_MODULATION:
-		c->modulation = tvp->u.data;
-		break;
-	case DTV_BANDWIDTH_HZ:
-		c->bandwidth_hz = tvp->u.data;
-		break;
-	case DTV_INVERSION:
-		c->inversion = tvp->u.data;
-		break;
-	case DTV_SYMBOL_RATE:
-		c->symbol_rate = tvp->u.data;
-		break;
-	case DTV_INNER_FEC:
-		c->fec_inner = tvp->u.data;
-		break;
-	case DTV_PILOT:
-		c->pilot = tvp->u.data;
-		break;
-	case DTV_ROLLOFF:
-		c->rolloff = tvp->u.data;
-		break;
-	case DTV_DELIVERY_SYSTEM:
-		r = set_delivery_system(fe, tvp->u.data);
-		break;
-	case DTV_VOLTAGE:
-		c->voltage = tvp->u.data;
-		r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
-			(void *)c->voltage);
-		break;
-	case DTV_TONE:
-		c->sectone = tvp->u.data;
-		r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
-			(void *)c->sectone);
-		break;
-	case DTV_CODE_RATE_HP:
-		c->code_rate_HP = tvp->u.data;
-		break;
-	case DTV_CODE_RATE_LP:
-		c->code_rate_LP = tvp->u.data;
-		break;
-	case DTV_GUARD_INTERVAL:
-		c->guard_interval = tvp->u.data;
-		break;
-	case DTV_TRANSMISSION_MODE:
-		c->transmission_mode = tvp->u.data;
-		break;
-	case DTV_HIERARCHY:
-		c->hierarchy = tvp->u.data;
-		break;
-	case DTV_INTERLEAVING:
-		c->interleaving = tvp->u.data;
-		break;
-
-	/* ISDB-T Support here */
-	case DTV_ISDBT_PARTIAL_RECEPTION:
-		c->isdbt_partial_reception = tvp->u.data;
-		break;
-	case DTV_ISDBT_SOUND_BROADCASTING:
-		c->isdbt_sb_mode = tvp->u.data;
-		break;
-	case DTV_ISDBT_SB_SUBCHANNEL_ID:
-		c->isdbt_sb_subchannel = tvp->u.data;
-		break;
-	case DTV_ISDBT_SB_SEGMENT_IDX:
-		c->isdbt_sb_segment_idx = tvp->u.data;
-		break;
-	case DTV_ISDBT_SB_SEGMENT_COUNT:
-		c->isdbt_sb_segment_count = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYER_ENABLED:
-		c->isdbt_layer_enabled = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERA_FEC:
-		c->layer[0].fec = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERA_MODULATION:
-		c->layer[0].modulation = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
-		c->layer[0].segment_count = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
-		c->layer[0].interleaving = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERB_FEC:
-		c->layer[1].fec = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERB_MODULATION:
-		c->layer[1].modulation = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
-		c->layer[1].segment_count = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
-		c->layer[1].interleaving = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERC_FEC:
-		c->layer[2].fec = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERC_MODULATION:
-		c->layer[2].modulation = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
-		c->layer[2].segment_count = tvp->u.data;
-		break;
-	case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
-		c->layer[2].interleaving = tvp->u.data;
-		break;
-	case DTV_ISDBS_TS_ID:
-		c->isdbs_ts_id = tvp->u.data;
-		break;
-	case DTV_DVBT2_PLP_ID:
-		c->dvbt2_plp_id = tvp->u.data;
-		break;
-
-	/* ATSC-MH */
-	case DTV_ATSCMH_PARADE_ID:
-		fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
-		break;
-	case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
-		fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return r;
-}
-
-static int dvb_frontend_ioctl(struct file *file,
-			unsigned int cmd, void *parg)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	int err = -EOPNOTSUPP;
-
-	dprintk("%s (%d)\n", __func__, _IOC_NR(cmd));
-
-	if (fepriv->exit != DVB_FE_NO_EXIT)
-		return -ENODEV;
-
-	if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
-	    (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
-	     cmd == FE_DISEQC_RECV_SLAVE_REPLY))
-		return -EPERM;
-
-	if (down_interruptible (&fepriv->sem))
-		return -ERESTARTSYS;
-
-	if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
-		err = dvb_frontend_ioctl_properties(file, cmd, parg);
-	else {
-		c->state = DTV_UNDEFINED;
-		err = dvb_frontend_ioctl_legacy(file, cmd, parg);
-	}
-
-	up(&fepriv->sem);
-	return err;
-}
-
-static int dvb_frontend_ioctl_properties(struct file *file,
-			unsigned int cmd, void *parg)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	int err = 0;
-
-	struct dtv_properties *tvps = NULL;
-	struct dtv_property *tvp = NULL;
-	int i;
-
-	dprintk("%s\n", __func__);
-
-	if(cmd == FE_SET_PROPERTY) {
-		tvps = (struct dtv_properties __user *)parg;
-
-		dprintk("%s() properties.num = %d\n", __func__, tvps->num);
-		dprintk("%s() properties.props = %p\n", __func__, tvps->props);
-
-		/* Put an arbitrary limit on the number of messages that can
-		 * be sent at once */
-		if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
-			return -EINVAL;
-
-		tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
-		if (!tvp) {
-			err = -ENOMEM;
-			goto out;
-		}
-
-		if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
-			err = -EFAULT;
-			goto out;
-		}
-
-		for (i = 0; i < tvps->num; i++) {
-			err = dtv_property_process_set(fe, tvp + i, file);
-			if (err < 0)
-				goto out;
-			(tvp + i)->result = err;
-		}
-
-		if (c->state == DTV_TUNE)
-			dprintk("%s() Property cache is full, tuning\n", __func__);
-
-	} else
-	if(cmd == FE_GET_PROPERTY) {
-		tvps = (struct dtv_properties __user *)parg;
-
-		dprintk("%s() properties.num = %d\n", __func__, tvps->num);
-		dprintk("%s() properties.props = %p\n", __func__, tvps->props);
-
-		/* Put an arbitrary limit on the number of messages that can
-		 * be sent at once */
-		if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
-			return -EINVAL;
-
-		tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
-		if (!tvp) {
-			err = -ENOMEM;
-			goto out;
-		}
-
-		if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
-			err = -EFAULT;
-			goto out;
-		}
-
-		/*
-		 * Fills the cache out struct with the cache contents, plus
-		 * the data retrieved from get_frontend, if the frontend
-		 * is not idle. Otherwise, returns the cached content
-		 */
-		if (fepriv->state != FESTATE_IDLE) {
-			err = dtv_get_frontend(fe, NULL);
-			if (err < 0)
-				goto out;
-		}
-		for (i = 0; i < tvps->num; i++) {
-			err = dtv_property_process_get(fe, c, tvp + i, file);
-			if (err < 0)
-				goto out;
-			(tvp + i)->result = err;
-		}
-
-		if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
-			err = -EFAULT;
-			goto out;
-		}
-
-	} else
-		err = -EOPNOTSUPP;
-
-out:
-	kfree(tvp);
-	return err;
-}
-
-static int dtv_set_frontend(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	struct dvb_frontend_tune_settings fetunesettings;
-	u32 rolloff = 0;
-
-	if (dvb_frontend_check_parameters(fe) < 0)
-		return -EINVAL;
-
-	/*
-	 * Initialize output parameters to match the values given by
-	 * the user. FE_SET_FRONTEND triggers an initial frontend event
-	 * with status = 0, which copies output parameters to userspace.
-	 */
-	dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
-
-	/*
-	 * Be sure that the bandwidth will be filled for all
-	 * non-satellite systems, as tuners need to know what
-	 * low pass/Nyquist half filter should be applied, in
-	 * order to avoid inter-channel noise.
-	 *
-	 * ISDB-T and DVB-T/T2 already sets bandwidth.
-	 * ATSC and DVB-C don't set, so, the core should fill it.
-	 *
-	 * On DVB-C Annex A and C, the bandwidth is a function of
-	 * the roll-off and symbol rate. Annex B defines different
-	 * roll-off factors depending on the modulation. Fortunately,
-	 * Annex B is only used with 6MHz, so there's no need to
-	 * calculate it.
-	 *
-	 * While not officially supported, a side effect of handling it at
-	 * the cache level is that a program could retrieve the bandwidth
-	 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
-	 */
-	switch (c->delivery_system) {
-	case SYS_ATSC:
-	case SYS_DVBC_ANNEX_B:
-		c->bandwidth_hz = 6000000;
-		break;
-	case SYS_DVBC_ANNEX_A:
-		rolloff = 115;
-		break;
-	case SYS_DVBC_ANNEX_C:
-		rolloff = 113;
-		break;
-	default:
-		break;
-	}
-	if (rolloff)
-		c->bandwidth_hz = (c->symbol_rate * rolloff) / 100;
-
-	/* force auto frequency inversion if requested */
-	if (dvb_force_auto_inversion)
-		c->inversion = INVERSION_AUTO;
-
-	/*
-	 * without hierarchical coding code_rate_LP is irrelevant,
-	 * so we tolerate the otherwise invalid FEC_NONE setting
-	 */
-	if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
-		c->code_rate_LP = FEC_AUTO;
-
-	/* get frontend-specific tuning settings */
-	memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
-	if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
-		fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
-		fepriv->max_drift = fetunesettings.max_drift;
-		fepriv->step_size = fetunesettings.step_size;
-	} else {
-		/* default values */
-		switch (c->delivery_system) {
-		case SYS_DVBS:
-		case SYS_DVBS2:
-		case SYS_ISDBS:
-		case SYS_TURBO:
-		case SYS_DVBC_ANNEX_A:
-		case SYS_DVBC_ANNEX_C:
-			fepriv->min_delay = HZ / 20;
-			fepriv->step_size = c->symbol_rate / 16000;
-			fepriv->max_drift = c->symbol_rate / 2000;
-			break;
-		case SYS_DVBT:
-		case SYS_DVBT2:
-		case SYS_ISDBT:
-		case SYS_DTMB:
-			fepriv->min_delay = HZ / 20;
-			fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
-			fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
-			break;
-		default:
-			/*
-			 * FIXME: This sounds wrong! if freqency_stepsize is
-			 * defined by the frontend, why not use it???
-			 */
-			fepriv->min_delay = HZ / 20;
-			fepriv->step_size = 0; /* no zigzag */
-			fepriv->max_drift = 0;
-			break;
-		}
-	}
-	if (dvb_override_tune_delay > 0)
-		fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
-
-	fepriv->state = FESTATE_RETUNE;
-
-	/* Request the search algorithm to search */
-	fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
-
-	dvb_frontend_clear_events(fe);
-	dvb_frontend_add_event(fe, 0);
-	dvb_frontend_wakeup(fe);
-	fepriv->status = 0;
-
-	return 0;
-}
-
-
-static int dvb_frontend_ioctl_legacy(struct file *file,
-			unsigned int cmd, void *parg)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-	int err = -EOPNOTSUPP;
-
-	switch (cmd) {
-	case FE_GET_INFO: {
-		struct dvb_frontend_info* info = parg;
-
-		memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
-		dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
-
-		/*
-		 * Associate the 4 delivery systems supported by DVBv3
-		 * API with their DVBv5 counterpart. For the other standards,
-		 * use the closest type, assuming that it would hopefully
-		 * work with a DVBv3 application.
-		 * It should be noticed that, on multi-frontend devices with
-		 * different types (terrestrial and cable, for example),
-		 * a pure DVBv3 application won't be able to use all delivery
-		 * systems. Yet, changing the DVBv5 cache to the other delivery
-		 * system should be enough for making it work.
-		 */
-		switch (dvbv3_type(c->delivery_system)) {
-		case DVBV3_QPSK:
-			info->type = FE_QPSK;
-			break;
-		case DVBV3_ATSC:
-			info->type = FE_ATSC;
-			break;
-		case DVBV3_QAM:
-			info->type = FE_QAM;
-			break;
-		case DVBV3_OFDM:
-			info->type = FE_OFDM;
-			break;
-		default:
-			printk(KERN_ERR
-			       "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
-			       __func__, c->delivery_system);
-			fe->ops.info.type = FE_OFDM;
-		}
-		dprintk("current delivery system on cache: %d, V3 type: %d\n",
-			c->delivery_system, fe->ops.info.type);
-
-		/* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
-		 * do it, it is done for it. */
-		info->caps |= FE_CAN_INVERSION_AUTO;
-		err = 0;
-		break;
-	}
-
-	case FE_READ_STATUS: {
-		fe_status_t* status = parg;
-
-		/* if retune was requested but hasn't occurred yet, prevent
-		 * that user get signal state from previous tuning */
-		if (fepriv->state == FESTATE_RETUNE ||
-		    fepriv->state == FESTATE_ERROR) {
-			err=0;
-			*status = 0;
-			break;
-		}
-
-		if (fe->ops.read_status)
-			err = fe->ops.read_status(fe, status);
-		break;
-	}
-	case FE_READ_BER:
-		if (fe->ops.read_ber)
-			err = fe->ops.read_ber(fe, (__u32*) parg);
-		break;
-
-	case FE_READ_SIGNAL_STRENGTH:
-		if (fe->ops.read_signal_strength)
-			err = fe->ops.read_signal_strength(fe, (__u16*) parg);
-		break;
-
-	case FE_READ_SNR:
-		if (fe->ops.read_snr)
-			err = fe->ops.read_snr(fe, (__u16*) parg);
-		break;
-
-	case FE_READ_UNCORRECTED_BLOCKS:
-		if (fe->ops.read_ucblocks)
-			err = fe->ops.read_ucblocks(fe, (__u32*) parg);
-		break;
-
-
-	case FE_DISEQC_RESET_OVERLOAD:
-		if (fe->ops.diseqc_reset_overload) {
-			err = fe->ops.diseqc_reset_overload(fe);
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_DISEQC_SEND_MASTER_CMD:
-		if (fe->ops.diseqc_send_master_cmd) {
-			err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_DISEQC_SEND_BURST:
-		if (fe->ops.diseqc_send_burst) {
-			err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_SET_TONE:
-		if (fe->ops.set_tone) {
-			err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
-			fepriv->tone = (fe_sec_tone_mode_t) parg;
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_SET_VOLTAGE:
-		if (fe->ops.set_voltage) {
-			err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
-			fepriv->voltage = (fe_sec_voltage_t) parg;
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_DISHNETWORK_SEND_LEGACY_CMD:
-		if (fe->ops.dishnetwork_send_legacy_command) {
-			err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		} else if (fe->ops.set_voltage) {
-			/*
-			 * NOTE: This is a fallback condition.  Some frontends
-			 * (stv0299 for instance) take longer than 8msec to
-			 * respond to a set_voltage command.  Those switches
-			 * need custom routines to switch properly.  For all
-			 * other frontends, the following should work ok.
-			 * Dish network legacy switches (as used by Dish500)
-			 * are controlled by sending 9-bit command words
-			 * spaced 8msec apart.
-			 * the actual command word is switch/port dependent
-			 * so it is up to the userspace application to send
-			 * the right command.
-			 * The command must always start with a '0' after
-			 * initialization, so parg is 8 bits and does not
-			 * include the initialization or start bit
-			 */
-			unsigned long swcmd = ((unsigned long) parg) << 1;
-			struct timeval nexttime;
-			struct timeval tv[10];
-			int i;
-			u8 last = 1;
-			if (dvb_frontend_debug)
-				printk("%s switch command: 0x%04lx\n", __func__, swcmd);
-			do_gettimeofday(&nexttime);
-			if (dvb_frontend_debug)
-				memcpy(&tv[0], &nexttime, sizeof(struct timeval));
-			/* before sending a command, initialize by sending
-			 * a 32ms 18V to the switch
-			 */
-			fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
-			dvb_frontend_sleep_until(&nexttime, 32000);
-
-			for (i = 0; i < 9; i++) {
-				if (dvb_frontend_debug)
-					do_gettimeofday(&tv[i + 1]);
-				if ((swcmd & 0x01) != last) {
-					/* set voltage to (last ? 13V : 18V) */
-					fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
-					last = (last) ? 0 : 1;
-				}
-				swcmd = swcmd >> 1;
-				if (i != 8)
-					dvb_frontend_sleep_until(&nexttime, 8000);
-			}
-			if (dvb_frontend_debug) {
-				printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
-					__func__, fe->dvb->num);
-				for (i = 1; i < 10; i++)
-					printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
-			}
-			err = 0;
-			fepriv->state = FESTATE_DISEQC;
-			fepriv->status = 0;
-		}
-		break;
-
-	case FE_DISEQC_RECV_SLAVE_REPLY:
-		if (fe->ops.diseqc_recv_slave_reply)
-			err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
-		break;
-
-	case FE_ENABLE_HIGH_LNB_VOLTAGE:
-		if (fe->ops.enable_high_lnb_voltage)
-			err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
-		break;
-
-	case FE_SET_FRONTEND:
-		err = set_delivery_system(fe, SYS_UNDEFINED);
-		if (err)
-			break;
-
-		err = dtv_property_cache_sync(fe, c, parg);
-		if (err)
-			break;
-		err = dtv_set_frontend(fe);
-		break;
-	case FE_GET_EVENT:
-		err = dvb_frontend_get_event (fe, parg, file->f_flags);
-		break;
-
-	case FE_GET_FRONTEND:
-		err = dtv_get_frontend(fe, parg);
-		break;
-
-	case FE_SET_FRONTEND_TUNE_MODE:
-		fepriv->tune_mode_flags = (unsigned long) parg;
-		err = 0;
-		break;
-	};
-
-	return err;
-}
-
-
-static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-
-	dprintk ("%s\n", __func__);
-
-	poll_wait (file, &fepriv->events.wait_queue, wait);
-
-	if (fepriv->events.eventw != fepriv->events.eventr)
-		return (POLLIN | POLLRDNORM | POLLPRI);
-
-	return 0;
-}
-
-static int dvb_frontend_open(struct inode *inode, struct file *file)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dvb_adapter *adapter = fe->dvb;
-	int ret;
-
-	dprintk ("%s\n", __func__);
-	if (fepriv->exit == DVB_FE_DEVICE_REMOVED)
-		return -ENODEV;
-
-	if (adapter->mfe_shared) {
-		mutex_lock (&adapter->mfe_lock);
-
-		if (adapter->mfe_dvbdev == NULL)
-			adapter->mfe_dvbdev = dvbdev;
-
-		else if (adapter->mfe_dvbdev != dvbdev) {
-			struct dvb_device
-				*mfedev = adapter->mfe_dvbdev;
-			struct dvb_frontend
-				*mfe = mfedev->priv;
-			struct dvb_frontend_private
-				*mfepriv = mfe->frontend_priv;
-			int mferetry = (dvb_mfe_wait_time << 1);
-
-			mutex_unlock (&adapter->mfe_lock);
-			while (mferetry-- && (mfedev->users != -1 ||
-					mfepriv->thread != NULL)) {
-				if(msleep_interruptible(500)) {
-					if(signal_pending(current))
-						return -EINTR;
-				}
-			}
-
-			mutex_lock (&adapter->mfe_lock);
-			if(adapter->mfe_dvbdev != dvbdev) {
-				mfedev = adapter->mfe_dvbdev;
-				mfe = mfedev->priv;
-				mfepriv = mfe->frontend_priv;
-				if (mfedev->users != -1 ||
-						mfepriv->thread != NULL) {
-					mutex_unlock (&adapter->mfe_lock);
-					return -EBUSY;
-				}
-				adapter->mfe_dvbdev = dvbdev;
-			}
-		}
-	}
-
-	if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
-		if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
-			goto err0;
-
-		/* If we took control of the bus, we need to force
-		   reinitialization.  This is because many ts_bus_ctrl()
-		   functions strobe the RESET pin on the demod, and if the
-		   frontend thread already exists then the dvb_init() routine
-		   won't get called (which is what usually does initial
-		   register configuration). */
-		fepriv->reinitialise = 1;
-	}
-
-	if ((ret = dvb_generic_open (inode, file)) < 0)
-		goto err1;
-
-	if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
-		/* normal tune mode when opened R/W */
-		fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
-		fepriv->tone = -1;
-		fepriv->voltage = -1;
-
-		ret = dvb_frontend_start (fe);
-		if (ret)
-			goto err2;
-
-		/*  empty event queue */
-		fepriv->events.eventr = fepriv->events.eventw = 0;
-	}
-
-	if (adapter->mfe_shared)
-		mutex_unlock (&adapter->mfe_lock);
-	return ret;
-
-err2:
-	dvb_generic_release(inode, file);
-err1:
-	if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
-		fe->ops.ts_bus_ctrl(fe, 0);
-err0:
-	if (adapter->mfe_shared)
-		mutex_unlock (&adapter->mfe_lock);
-	return ret;
-}
-
-static int dvb_frontend_release(struct inode *inode, struct file *file)
-{
-	struct dvb_device *dvbdev = file->private_data;
-	struct dvb_frontend *fe = dvbdev->priv;
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	int ret;
-
-	dprintk ("%s\n", __func__);
-
-	if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
-		fepriv->release_jiffies = jiffies;
-		mb();
-	}
-
-	ret = dvb_generic_release (inode, file);
-
-	if (dvbdev->users == -1) {
-		wake_up(&fepriv->wait_queue);
-		if (fepriv->exit != DVB_FE_NO_EXIT) {
-			fops_put(file->f_op);
-			file->f_op = NULL;
-			wake_up(&dvbdev->wait_queue);
-		}
-		if (fe->ops.ts_bus_ctrl)
-			fe->ops.ts_bus_ctrl(fe, 0);
-	}
-
-	return ret;
-}
-
-static const struct file_operations dvb_frontend_fops = {
-	.owner		= THIS_MODULE,
-	.unlocked_ioctl	= dvb_generic_ioctl,
-	.poll		= dvb_frontend_poll,
-	.open		= dvb_frontend_open,
-	.release	= dvb_frontend_release,
-	.llseek		= noop_llseek,
-};
-
-int dvb_register_frontend(struct dvb_adapter* dvb,
-			  struct dvb_frontend* fe)
-{
-	struct dvb_frontend_private *fepriv;
-	static const struct dvb_device dvbdev_template = {
-		.users = ~0,
-		.writers = 1,
-		.readers = (~0)-1,
-		.fops = &dvb_frontend_fops,
-		.kernel_ioctl = dvb_frontend_ioctl
-	};
-
-	dprintk ("%s\n", __func__);
-
-	if (mutex_lock_interruptible(&frontend_mutex))
-		return -ERESTARTSYS;
-
-	fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
-	if (fe->frontend_priv == NULL) {
-		mutex_unlock(&frontend_mutex);
-		return -ENOMEM;
-	}
-	fepriv = fe->frontend_priv;
-
-	sema_init(&fepriv->sem, 1);
-	init_waitqueue_head (&fepriv->wait_queue);
-	init_waitqueue_head (&fepriv->events.wait_queue);
-	mutex_init(&fepriv->events.mtx);
-	fe->dvb = dvb;
-	fepriv->inversion = INVERSION_OFF;
-
-	printk ("DVB: registering adapter %i frontend %i (%s)...\n",
-		fe->dvb->num,
-		fe->id,
-		fe->ops.info.name);
-
-	dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
-			     fe, DVB_DEVICE_FRONTEND);
-
-	/*
-	 * Initialize the cache to the proper values according with the
-	 * first supported delivery system (ops->delsys[0])
-	 */
-
-        fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
-	dvb_frontend_clear_cache(fe);
-
-	mutex_unlock(&frontend_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(dvb_register_frontend);
-
-int dvb_unregister_frontend(struct dvb_frontend* fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	dprintk ("%s\n", __func__);
-
-	mutex_lock(&frontend_mutex);
-	dvb_frontend_stop (fe);
-	mutex_unlock(&frontend_mutex);
-
-	if (fepriv->dvbdev->users < -1)
-		wait_event(fepriv->dvbdev->wait_queue,
-				fepriv->dvbdev->users==-1);
-
-	mutex_lock(&frontend_mutex);
-	dvb_unregister_device (fepriv->dvbdev);
-
-	/* fe is invalid now */
-	kfree(fepriv);
-	mutex_unlock(&frontend_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(dvb_unregister_frontend);
-
-#ifdef CONFIG_MEDIA_ATTACH
-void dvb_frontend_detach(struct dvb_frontend* fe)
-{
-	void *ptr;
-
-	if (fe->ops.release_sec) {
-		fe->ops.release_sec(fe);
-		symbol_put_addr(fe->ops.release_sec);
-	}
-	if (fe->ops.tuner_ops.release) {
-		fe->ops.tuner_ops.release(fe);
-		symbol_put_addr(fe->ops.tuner_ops.release);
-	}
-	if (fe->ops.analog_ops.release) {
-		fe->ops.analog_ops.release(fe);
-		symbol_put_addr(fe->ops.analog_ops.release);
-	}
-	ptr = (void*)fe->ops.release;
-	if (ptr) {
-		fe->ops.release(fe);
-		symbol_put_addr(ptr);
-	}
-}
-#else
-void dvb_frontend_detach(struct dvb_frontend* fe)
-{
-	if (fe->ops.release_sec)
-		fe->ops.release_sec(fe);
-	if (fe->ops.tuner_ops.release)
-		fe->ops.tuner_ops.release(fe);
-	if (fe->ops.analog_ops.release)
-		fe->ops.analog_ops.release(fe);
-	if (fe->ops.release)
-		fe->ops.release(fe);
-}
-#endif
-EXPORT_SYMBOL(dvb_frontend_detach);