4 files changed, 92 insertions, 153 deletions

diff --git a/drivers/media/dvb-core/dvb-usb-ids.h b/drivers/media/dvb-core/dvb-usb-ids.h
index 1c1c298d2289..0afad395ef97 100644
--- a/drivers/media/dvb-core/dvb-usb-ids.h
+++ b/drivers/media/dvb-core/dvb-usb-ids.h
@@ -1,6 +1,6 @@
 /* dvb-usb-ids.h is part of the DVB USB library.
  *
- * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) see
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) see
  * dvb-usb-init.c for copyright information.
  *
  * a header file containing define's for the USB device supported by the
@@ -118,6 +118,7 @@
 #define USB_PID_DIBCOM_STK807XP				0x1f90
 #define USB_PID_DIBCOM_STK807XPVR			0x1f98
 #define USB_PID_DIBCOM_STK8096GP                        0x1fa0
+#define USB_PID_DIBCOM_STK8096PVR                       0x1faa
 #define USB_PID_DIBCOM_NIM8096MD                        0x1fa8
 #define USB_PID_DIBCOM_TFE8096P				0x1f9C
 #define USB_PID_DIBCOM_ANCHOR_2135_COLD			0x2131
@@ -241,12 +242,14 @@
 #define USB_PID_AVERMEDIA_1867				0x1867
 #define USB_PID_AVERMEDIA_A867				0xa867
 #define USB_PID_AVERMEDIA_H335				0x0335
+#define USB_PID_AVERMEDIA_TD110				0xa110
 #define USB_PID_AVERMEDIA_TWINSTAR			0x0825
 #define USB_PID_TECHNOTREND_CONNECT_S2400               0x3006
 #define USB_PID_TECHNOTREND_CONNECT_S2400_8KEEPROM	0x3009
 #define USB_PID_TECHNOTREND_CONNECT_CT3650		0x300d
 #define USB_PID_TECHNOTREND_CONNECT_S2_4600             0x3011
 #define USB_PID_TECHNOTREND_CONNECT_CT2_4650_CI		0x3012
+#define USB_PID_TECHNOTREND_CONNECT_CT2_4650_CI_2	0x3015
 #define USB_PID_TECHNOTREND_TVSTICK_CT2_4400		0x3014
 #define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY	0x005a
 #define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY_2	0x0081
@@ -255,6 +258,10 @@
 #define USB_PID_TERRATEC_CINERGY_T_EXPRESS		0x0062
 #define USB_PID_TERRATEC_CINERGY_T_XXS			0x0078
 #define USB_PID_TERRATEC_CINERGY_T_XXS_2		0x00ab
+#define USB_PID_TERRATEC_CINERGY_S2_R1			0x00a8
+#define USB_PID_TERRATEC_CINERGY_S2_R2			0x00b0
+#define USB_PID_TERRATEC_CINERGY_S2_R3			0x0102
+#define USB_PID_TERRATEC_CINERGY_S2_R4			0x0105
 #define USB_PID_TERRATEC_H7				0x10b4
 #define USB_PID_TERRATEC_H7_2				0x10a3
 #define USB_PID_TERRATEC_H7_3				0x10a5
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 40080645341e..c0142614c408 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -134,15 +134,17 @@ struct dvb_frontend_private {
 
 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
 	struct media_pipeline pipe;
-	struct media_entity *pipe_start_entity;
 #endif
 };
 
 static void dvb_frontend_wakeup(struct dvb_frontend *fe);
 static int dtv_get_frontend(struct dvb_frontend *fe,
+			    struct dtv_frontend_properties *c,
 			    struct dvb_frontend_parameters *p_out);
-static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
-					   struct dvb_frontend_parameters *p);
+static int
+dtv_property_legacy_params_sync(struct dvb_frontend *fe,
+				const struct dtv_frontend_properties *c,
+				struct dvb_frontend_parameters *p);
 
 static bool has_get_frontend(struct dvb_frontend *fe)
 {
@@ -202,6 +204,7 @@ static void dvb_frontend_add_event(struct dvb_frontend *fe,
 				   enum fe_status status)
 {
 	struct dvb_frontend_private *fepriv = fe->frontend_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	struct dvb_fe_events *events = &fepriv->events;
 	struct dvb_frontend_event *e;
 	int wp;
@@ -209,7 +212,7 @@ static void dvb_frontend_add_event(struct dvb_frontend *fe,
 	dev_dbg(fe->dvb->device, "%s:\n", __func__);
 
 	if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
-		dtv_get_frontend(fe, &fepriv->parameters_out);
+		dtv_get_frontend(fe, c, &fepriv->parameters_out);
 
 	mutex_lock(&events->mtx);
 
@@ -596,104 +599,13 @@ static void dvb_frontend_wakeup(struct dvb_frontend *fe)
 	wake_up_interruptible(&fepriv->wait_queue);
 }
 
-/**
- * dvb_enable_media_tuner() - tries to enable the DVB tuner
- *
- * @fe:		struct dvb_frontend pointer
- *
- * This function ensures that just one media tuner is enabled for a given
- * frontend. It has two different behaviors:
- * - For trivial devices with just one tuner:
- *   it just enables the existing tuner->fe link
- * - For devices with more than one tuner:
- *   It is up to the driver to implement the logic that will enable one tuner
- *   and disable the other ones. However, if more than one tuner is enabled for
- *   the same frontend, it will print an error message and return -EINVAL.
- *
- * At return, it will return the error code returned by media_entity_setup_link,
- * or 0 if everything is OK, if no tuner is linked to the frontend or if the
- * mdev is NULL.
- */
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
-static int dvb_enable_media_tuner(struct dvb_frontend *fe)
-{
-	struct dvb_frontend_private *fepriv = fe->frontend_priv;
-	struct dvb_adapter *adapter = fe->dvb;
-	struct media_device *mdev = adapter->mdev;
-	struct media_entity  *entity, *source;
-	struct media_link *link, *found_link = NULL;
-	int ret, n_links = 0, active_links = 0;
-
-	fepriv->pipe_start_entity = NULL;
-
-	if (!mdev)
-		return 0;
-
-	entity = fepriv->dvbdev->entity;
-	fepriv->pipe_start_entity = entity;
-
-	list_for_each_entry(link, &entity->links, list) {
-		if (link->sink->entity == entity) {
-			found_link = link;
-			n_links++;
-			if (link->flags & MEDIA_LNK_FL_ENABLED)
-				active_links++;
-		}
-	}
-
-	if (!n_links || active_links == 1 || !found_link)
-		return 0;
-
-	/*
-	 * If a frontend has more than one tuner linked, it is up to the driver
-	 * to select with one will be the active one, as the frontend core can't
-	 * guess. If the driver doesn't do that, it is a bug.
-	 */
-	if (n_links > 1 && active_links != 1) {
-		dev_err(fe->dvb->device,
-			"WARNING: there are %d active links among %d tuners. This is a driver's bug!\n",
-			active_links, n_links);
-		return -EINVAL;
-	}
-
-	source = found_link->source->entity;
-	fepriv->pipe_start_entity = source;
-	list_for_each_entry(link, &source->links, list) {
-		struct media_entity *sink;
-		int flags = 0;
-
-		sink = link->sink->entity;
-		if (sink == entity)
-			flags = MEDIA_LNK_FL_ENABLED;
-
-		ret = media_entity_setup_link(link, flags);
-		if (ret) {
-			dev_err(fe->dvb->device,
-				"Couldn't change link %s->%s to %s. Error %d\n",
-				source->name, sink->name,
-				flags ? "enabled" : "disabled",
-				ret);
-			return ret;
-		} else
-			dev_dbg(fe->dvb->device,
-				"link %s->%s was %s\n",
-				source->name, sink->name,
-				flags ? "ENABLED" : "disabled");
-	}
-	return 0;
-}
-#endif
-
 static int dvb_frontend_thread(void *data)
 {
 	struct dvb_frontend *fe = data;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	struct dvb_frontend_private *fepriv = fe->frontend_priv;
 	enum fe_status s;
 	enum dvbfe_algo algo;
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
-	int ret;
-#endif
-
 	bool re_tune = false;
 	bool semheld = false;
 
@@ -706,20 +618,6 @@ static int dvb_frontend_thread(void *data)
 	fepriv->wakeup = 0;
 	fepriv->reinitialise = 0;
 
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
-	ret = dvb_enable_media_tuner(fe);
-	if (ret) {
-		/* FIXME: return an error if it fails */
-		dev_info(fe->dvb->device,
-			"proceeding with FE task\n");
-	} else if (fepriv->pipe_start_entity) {
-		ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
-						  &fepriv->pipe);
-		if (ret)
-			return ret;
-	}
-#endif
-
 	dvb_frontend_init(fe);
 
 	set_freezable();
@@ -807,7 +705,7 @@ restart:
 					fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
 					fepriv->delay = HZ / 2;
 				}
-				dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
+				dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
 				fe->ops.read_status(fe, &s);
 				if (s != fepriv->status) {
 					dvb_frontend_add_event(fe, s); /* update event list */
@@ -829,12 +727,6 @@ restart:
 		}
 	}
 
-#ifdef CONFIG_MEDIA_CONTROLLER_DVB
-	if (fepriv->pipe_start_entity)
-		media_entity_pipeline_stop(fepriv->pipe_start_entity);
-	fepriv->pipe_start_entity = NULL;
-#endif
-
 	if (dvb_powerdown_on_sleep) {
 		if (fe->ops.set_voltage)
 			fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
@@ -899,10 +791,10 @@ void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
 	s32 delta;
 
 	*waketime = ktime_add_us(*waketime, add_usec);
-	delta = ktime_us_delta(ktime_get_real(), *waketime);
+	delta = ktime_us_delta(ktime_get_boottime(), *waketime);
 	if (delta > 2500) {
 		msleep((delta - 1500) / 1000);
-		delta = ktime_us_delta(ktime_get_real(), *waketime);
+		delta = ktime_us_delta(ktime_get_boottime(), *waketime);
 	}
 	if (delta > 0)
 		udelay(delta);
@@ -1162,18 +1054,24 @@ static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
 	_DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
 };
 
-static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
+static void dtv_property_dump(struct dvb_frontend *fe,
+			      bool is_set,
+			      struct dtv_property *tvp)
 {
 	int i;
 
 	if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
-		dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
-				__func__, tvp->cmd);
+		dev_warn(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x undefined\n",
+				__func__,
+				is_set ? "SET" : "GET",
+				tvp->cmd);
 		return;
 	}
 
-	dev_dbg(fe->dvb->device, "%s: tvp.cmd    = 0x%08x (%s)\n", __func__,
-			tvp->cmd, dtv_cmds[tvp->cmd].name);
+	dev_dbg(fe->dvb->device, "%s: %s tvp.cmd    = 0x%08x (%s)\n", __func__,
+		is_set ? "SET" : "GET",
+		tvp->cmd,
+		dtv_cmds[tvp->cmd].name);
 
 	if (dtv_cmds[tvp->cmd].buffer) {
 		dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
@@ -1268,11 +1166,11 @@ static int dtv_property_cache_sync(struct dvb_frontend *fe,
 /* 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)
+static int
+dtv_property_legacy_params_sync(struct dvb_frontend *fe,
+				const struct dtv_frontend_properties *c,
+				struct dvb_frontend_parameters *p)
 {
-	const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-
 	p->frequency = c->frequency;
 	p->inversion = c->inversion;
 
@@ -1344,16 +1242,17 @@ static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
  * 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 dtv_frontend_properties *c,
 			    struct dvb_frontend_parameters *p_out)
 {
 	int r;
 
 	if (fe->ops.get_frontend) {
-		r = fe->ops.get_frontend(fe);
+		r = fe->ops.get_frontend(fe, c);
 		if (unlikely(r < 0))
 			return r;
 		if (p_out)
-			dtv_property_legacy_params_sync(fe, p_out);
+			dtv_property_legacy_params_sync(fe, c, p_out);
 		return 0;
 	}
 
@@ -1589,7 +1488,7 @@ static int dtv_property_process_get(struct dvb_frontend *fe,
 			return r;
 	}
 
-	dtv_property_dump(fe, tvp);
+	dtv_property_dump(fe, false, tvp);
 
 	return 0;
 }
@@ -1830,6 +1729,8 @@ static int dtv_property_process_set(struct dvb_frontend *fe,
 			return r;
 	}
 
+	dtv_property_dump(fe, true, tvp);
+
 	switch(tvp->cmd) {
 	case DTV_CLEAR:
 		/*
@@ -2073,6 +1974,8 @@ static int dvb_frontend_ioctl_properties(struct file *file,
 			dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
 
 	} else if (cmd == FE_GET_PROPERTY) {
+		struct dtv_frontend_properties getp = fe->dtv_property_cache;
+
 		dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
 		dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
 
@@ -2094,17 +1997,18 @@ static int dvb_frontend_ioctl_properties(struct file *file,
 		}
 
 		/*
-		 * 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
+		 * Let's use our own copy of property cache, in order to
+		 * avoid mangling with DTV zigzag logic, as drivers might
+		 * return crap, if they don't check if the data is available
+		 * before updating the properties cache.
 		 */
 		if (fepriv->state != FESTATE_IDLE) {
-			err = dtv_get_frontend(fe, NULL);
+			err = dtv_get_frontend(fe, &getp, NULL);
 			if (err < 0)
 				goto out;
 		}
 		for (i = 0; i < tvps->num; i++) {
-			err = dtv_property_process_get(fe, c, tvp + i, file);
+			err = dtv_property_process_get(fe, &getp, tvp + i, file);
 			if (err < 0)
 				goto out;
 			(tvp + i)->result = err;
@@ -2139,7 +2043,7 @@ static int dtv_set_frontend(struct dvb_frontend *fe)
 	 * 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);
+	dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
 
 	/*
 	 * Be sure that the bandwidth will be filled for all
@@ -2451,7 +2355,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
 			u8 last = 1;
 			if (dvb_frontend_debug)
 				printk("%s switch command: 0x%04lx\n", __func__, swcmd);
-			nexttime = ktime_get_real();
+			nexttime = ktime_get_boottime();
 			if (dvb_frontend_debug)
 				tv[0] = nexttime;
 			/* before sending a command, initialize by sending
@@ -2462,7 +2366,7 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
 
 			for (i = 0; i < 9; i++) {
 				if (dvb_frontend_debug)
-					tv[i+1] = ktime_get_real();
+					tv[i+1] = ktime_get_boottime();
 				if ((swcmd & 0x01) != last) {
 					/* set voltage to (last ? 13V : 18V) */
 					fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
@@ -2509,10 +2413,18 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
 		err = dvb_frontend_get_event (fe, parg, file->f_flags);
 		break;
 
-	case FE_GET_FRONTEND:
-		err = dtv_get_frontend(fe, parg);
-		break;
+	case FE_GET_FRONTEND: {
+		struct dtv_frontend_properties getp = fe->dtv_property_cache;
 
+		/*
+		 * Let's use our own copy of property cache, in order to
+		 * avoid mangling with DTV zigzag logic, as drivers might
+		 * return crap, if they don't check if the data is available
+		 * before updating the properties cache.
+		 */
+		err = dtv_get_frontend(fe, &getp, parg);
+		break;
+	}
 	case FE_SET_FRONTEND_TUNE_MODE:
 		fepriv->tune_mode_flags = (unsigned long) parg;
 		err = 0;
@@ -2612,9 +2524,20 @@ static int dvb_frontend_open(struct inode *inode, struct file *file)
 		fepriv->tone = -1;
 		fepriv->voltage = -1;
 
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+		if (fe->dvb->mdev && fe->dvb->mdev->enable_source) {
+			ret = fe->dvb->mdev->enable_source(dvbdev->entity,
+							   &fepriv->pipe);
+			if (ret) {
+				dev_err(fe->dvb->device,
+					"Tuner is busy. Error %d\n", ret);
+				goto err2;
+			}
+		}
+#endif
 		ret = dvb_frontend_start (fe);
 		if (ret)
-			goto err2;
+			goto err3;
 
 		/*  empty event queue */
 		fepriv->events.eventr = fepriv->events.eventw = 0;
@@ -2624,7 +2547,12 @@ static int dvb_frontend_open(struct inode *inode, struct file *file)
 		mutex_unlock (&adapter->mfe_lock);
 	return ret;
 
+err3:
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+	if (fe->dvb->mdev && fe->dvb->mdev->disable_source)
+		fe->dvb->mdev->disable_source(dvbdev->entity);
 err2:
+#endif
 	dvb_generic_release(inode, file);
 err1:
 	if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
@@ -2653,6 +2581,10 @@ static int dvb_frontend_release(struct inode *inode, struct file *file)
 
 	if (dvbdev->users == -1) {
 		wake_up(&fepriv->wait_queue);
+#ifdef CONFIG_MEDIA_CONTROLLER_DVB
+		if (fe->dvb->mdev && fe->dvb->mdev->disable_source)
+			fe->dvb->mdev->disable_source(dvbdev->entity);
+#endif
 		if (fe->exit != DVB_FE_NO_EXIT)
 			wake_up(&dvbdev->wait_queue);
 		if (fe->ops.ts_bus_ctrl)
diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index 458bcce20e38..9592573a0b41 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -449,7 +449,8 @@ struct dvb_frontend_ops {
 	int (*set_frontend)(struct dvb_frontend *fe);
 	int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
 
-	int (*get_frontend)(struct dvb_frontend *fe);
+	int (*get_frontend)(struct dvb_frontend *fe,
+			    struct dtv_frontend_properties *props);
 
 	int (*read_status)(struct dvb_frontend *fe, enum fe_status *status);
 	int (*read_ber)(struct dvb_frontend* fe, u32* ber);
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 560450a0b32a..e1684c570e2f 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -58,7 +58,7 @@ static const char * const dnames[] = {
 #define DVB_MAX_IDS		MAX_DVB_MINORS
 #else
 #define DVB_MAX_IDS		4
-#define nums2minor(num,type,id)	((num << 6) | (id << 4) | type)
+#define nums2minor(num, type, id)	((num << 6) | (id << 4) | type)
 #define MAX_DVB_MINORS		(DVB_MAX_ADAPTERS*64)
 #endif
 
@@ -85,7 +85,7 @@ static int dvb_device_open(struct inode *inode, struct file *file)
 		file->private_data = dvbdev;
 		replace_fops(file, new_fops);
 		if (file->f_op->open)
-			err = file->f_op->open(inode,file);
+			err = file->f_op->open(inode, file);
 		up_read(&minor_rwsem);
 		mutex_unlock(&dvbdev_mutex);
 		return err;
@@ -352,7 +352,7 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev,
 	ret = media_device_register_entity(dvbdev->adapter->mdev,
 					   dvbdev->entity);
 	if (ret)
-		return (ret);
+		return ret;
 
 	printk(KERN_DEBUG "%s: media entity '%s' registered.\n",
 		__func__, dvbdev->entity->name);
@@ -620,8 +620,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
 			return -ENOMEM;
 		adap->conn = conn;
 
-		adap->conn_pads = kcalloc(1, sizeof(*adap->conn_pads),
-					    GFP_KERNEL);
+		adap->conn_pads = kzalloc(sizeof(*adap->conn_pads), GFP_KERNEL);
 		if (!adap->conn_pads)
 			return -ENOMEM;
 
@@ -661,7 +660,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
 	if (ntuner && ndemod) {
 		ret = media_create_pad_links(mdev,
 					     MEDIA_ENT_F_TUNER,
-					     tuner, TUNER_PAD_IF_OUTPUT,
+					     tuner, TUNER_PAD_OUTPUT,
 					     MEDIA_ENT_F_DTV_DEMOD,
 					     demod, 0, MEDIA_LNK_FL_ENABLED,
 					     false);
@@ -682,7 +681,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
 	if (demux && ca) {
 		ret = media_create_pad_link(demux, 1, ca,
 					    0, MEDIA_LNK_FL_ENABLED);
-		if (!ret)
+		if (ret)
 			return -ENOMEM;
 	}
 
@@ -868,7 +867,7 @@ int dvb_usercopy(struct file *file,
 			parg = sbuf;
 		} else {
 			/* too big to allocate from stack */
-			mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
+			mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
 			if (NULL == mbuf)
 				return -ENOMEM;
 			parg = mbuf;