Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

30 files changed, 633 insertions, 407 deletions

diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
index 6f907eb..6d34f40 100644
--- a/drivers/bluetooth/bluecard_cs.c
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -37,7 +37,7 @@
 #include <linux/wait.h>
 
 #include <linux/skbuff.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 #include <pcmcia/cs_types.h>
 #include <pcmcia/cs.h>
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 40aec0f..42d69d4 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -244,7 +244,7 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
 	if (rel) {
 		hdr[0] |= 0x80 + bcsp->msgq_txseq;
 		BT_DBG("Sending packet with seqno %u", bcsp->msgq_txseq);
-		bcsp->msgq_txseq = ++(bcsp->msgq_txseq) & 0x07;
+		bcsp->msgq_txseq = (bcsp->msgq_txseq + 1) & 0x07;
 	}
 
 	if (bcsp->use_crc)
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c
index c5016bd..c3b1dc3 100644
--- a/drivers/isdn/gigaset/asyncdata.c
+++ b/drivers/isdn/gigaset/asyncdata.c
@@ -126,26 +126,6 @@ static unsigned lock_loop(unsigned numbytes, struct inbuf_t *inbuf)
 	return numbytes;
 }
 
-/* set up next receive skb for data mode
- */
-static void new_rcv_skb(struct bc_state *bcs)
-{
-	struct cardstate *cs = bcs->cs;
-	unsigned short hw_hdr_len = cs->hw_hdr_len;
-
-	if (bcs->ignore) {
-		bcs->skb = NULL;
-		return;
-	}
-
-	bcs->skb = dev_alloc_skb(SBUFSIZE + hw_hdr_len);
-	if (bcs->skb == NULL) {
-		dev_warn(cs->dev, "could not allocate new skb\n");
-		return;
-	}
-	skb_reserve(bcs->skb, hw_hdr_len);
-}
-
 /* process a block of received bytes in HDLC data mode
  * (mstate != MS_LOCKED && !(inputstate & INS_command) && proto2 == L2_HDLC)
  * Collect HDLC frames, undoing byte stuffing and watching for DLE escapes.
@@ -159,8 +139,8 @@ static unsigned hdlc_loop(unsigned numbytes, struct inbuf_t *inbuf)
 	struct cardstate *cs = inbuf->cs;
 	struct bc_state *bcs = cs->bcs;
 	int inputstate = bcs->inputstate;
-	__u16 fcs = bcs->fcs;
-	struct sk_buff *skb = bcs->skb;
+	__u16 fcs = bcs->rx_fcs;
+	struct sk_buff *skb = bcs->rx_skb;
 	unsigned char *src = inbuf->data + inbuf->head;
 	unsigned procbytes = 0;
 	unsigned char c;
@@ -245,8 +225,7 @@ byte_stuff:
 
 				/* prepare reception of next frame */
 				inputstate &= ~INS_have_data;
-				new_rcv_skb(bcs);
-				skb = bcs->skb;
+				skb = gigaset_new_rx_skb(bcs);
 			} else {
 				/* empty frame (7E 7E) */
 #ifdef CONFIG_GIGASET_DEBUG
@@ -255,8 +234,7 @@ byte_stuff:
 				if (!skb) {
 					/* skipped (?) */
 					gigaset_isdn_rcv_err(bcs);
-					new_rcv_skb(bcs);
-					skb = bcs->skb;
+					skb = gigaset_new_rx_skb(bcs);
 				}
 			}
 
@@ -279,11 +257,11 @@ byte_stuff:
 #endif
 		inputstate |= INS_have_data;
 		if (skb) {
-			if (skb->len == SBUFSIZE) {
+			if (skb->len >= bcs->rx_bufsize) {
 				dev_warn(cs->dev, "received packet too long\n");
 				dev_kfree_skb_any(skb);
 				/* skip remainder of packet */
-				bcs->skb = skb = NULL;
+				bcs->rx_skb = skb = NULL;
 			} else {
 				*__skb_put(skb, 1) = c;
 				fcs = crc_ccitt_byte(fcs, c);
@@ -292,7 +270,7 @@ byte_stuff:
 	}
 
 	bcs->inputstate = inputstate;
-	bcs->fcs = fcs;
+	bcs->rx_fcs = fcs;
 	return procbytes;
 }
 
@@ -308,18 +286,18 @@ static unsigned iraw_loop(unsigned numbytes, struct inbuf_t *inbuf)
 	struct cardstate *cs = inbuf->cs;
 	struct bc_state *bcs = cs->bcs;
 	int inputstate = bcs->inputstate;
-	struct sk_buff *skb = bcs->skb;
+	struct sk_buff *skb = bcs->rx_skb;
 	unsigned char *src = inbuf->data + inbuf->head;
 	unsigned procbytes = 0;
 	unsigned char c;
 
 	if (!skb) {
 		/* skip this block */
-		new_rcv_skb(bcs);
+		gigaset_new_rx_skb(bcs);
 		return numbytes;
 	}
 
-	while (procbytes < numbytes && skb->len < SBUFSIZE) {
+	while (procbytes < numbytes && skb->len < bcs->rx_bufsize) {
 		c = *src++;
 		procbytes++;
 
@@ -343,7 +321,7 @@ static unsigned iraw_loop(unsigned numbytes, struct inbuf_t *inbuf)
 	if (inputstate & INS_have_data) {
 		gigaset_skb_rcvd(bcs, skb);
 		inputstate &= ~INS_have_data;
-		new_rcv_skb(bcs);
+		gigaset_new_rx_skb(bcs);
 	}
 
 	bcs->inputstate = inputstate;
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 8f78f15..6fbe899 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -70,7 +70,7 @@
 #define MAX_NUMBER_DIGITS 20
 #define MAX_FMT_IE_LEN 20
 
-/* values for gigaset_capi_appl.connected */
+/* values for bcs->apconnstate */
 #define APCONN_NONE	0	/* inactive/listening */
 #define APCONN_SETUP	1	/* connecting */
 #define APCONN_ACTIVE	2	/* B channel up */
@@ -80,10 +80,10 @@ struct gigaset_capi_appl {
 	struct list_head ctrlist;
 	struct gigaset_capi_appl *bcnext;
 	u16 id;
+	struct capi_register_params rp;
 	u16 nextMessageNumber;
 	u32 listenInfoMask;
 	u32 listenCIPmask;
-	int connected;
 };
 
 /* CAPI specific controller data structure */
@@ -319,6 +319,39 @@ static const char *format_ie(const char *ie)
 	return result;
 }
 
+/*
+ * emit DATA_B3_CONF message
+ */
+static void send_data_b3_conf(struct cardstate *cs, struct capi_ctr *ctr,
+			      u16 appl, u16 msgid, int channel,
+			      u16 handle, u16 info)
+{
+	struct sk_buff *cskb;
+	u8 *msg;
+
+	cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
+	if (!cskb) {
+		dev_err(cs->dev, "%s: out of memory\n", __func__);
+		return;
+	}
+	/* frequent message, avoid _cmsg overhead */
+	msg = __skb_put(cskb, CAPI_DATA_B3_CONF_LEN);
+	CAPIMSG_SETLEN(msg, CAPI_DATA_B3_CONF_LEN);
+	CAPIMSG_SETAPPID(msg, appl);
+	CAPIMSG_SETCOMMAND(msg, CAPI_DATA_B3);
+	CAPIMSG_SETSUBCOMMAND(msg,  CAPI_CONF);
+	CAPIMSG_SETMSGID(msg, msgid);
+	CAPIMSG_SETCONTROLLER(msg, ctr->cnr);
+	CAPIMSG_SETPLCI_PART(msg, channel);
+	CAPIMSG_SETNCCI_PART(msg, 1);
+	CAPIMSG_SETHANDLE_CONF(msg, handle);
+	CAPIMSG_SETINFO_CONF(msg, info);
+
+	/* emit message */
+	dump_rawmsg(DEBUG_MCMD, __func__, msg);
+	capi_ctr_handle_message(ctr, appl, cskb);
+}
+
 
 /*
  * driver interface functions
@@ -339,7 +372,6 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
 	struct gigaset_capi_ctr *iif = cs->iif;
 	struct gigaset_capi_appl *ap = bcs->ap;
 	unsigned char *req = skb_mac_header(dskb);
-	struct sk_buff *cskb;
 	u16 flags;
 
 	/* update statistics */
@@ -351,39 +383,22 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
 	}
 
 	/* don't send further B3 messages if disconnected */
-	if (ap->connected < APCONN_ACTIVE) {
+	if (bcs->apconnstate < APCONN_ACTIVE) {
 		gig_dbg(DEBUG_LLDATA, "disconnected, discarding ack");
 		return;
 	}
 
-	/* ToDo: honor unset "delivery confirmation" bit */
+	/*
+	 * send DATA_B3_CONF if "delivery confirmation" bit was set in request;
+	 * otherwise it has already been sent by do_data_b3_req()
+	 */
 	flags = CAPIMSG_FLAGS(req);
-
-	/* build DATA_B3_CONF message */
-	cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
-	if (!cskb) {
-		dev_err(cs->dev, "%s: out of memory\n", __func__);
-		return;
-	}
-	/* frequent message, avoid _cmsg overhead */
-	CAPIMSG_SETLEN(cskb->data, CAPI_DATA_B3_CONF_LEN);
-	CAPIMSG_SETAPPID(cskb->data, ap->id);
-	CAPIMSG_SETCOMMAND(cskb->data, CAPI_DATA_B3);
-	CAPIMSG_SETSUBCOMMAND(cskb->data,  CAPI_CONF);
-	CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(req));
-	CAPIMSG_SETCONTROLLER(cskb->data, iif->ctr.cnr);
-	CAPIMSG_SETPLCI_PART(cskb->data, bcs->channel + 1);
-	CAPIMSG_SETNCCI_PART(cskb->data, 1);
-	CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(req));
-	if (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION)
-		CAPIMSG_SETINFO_CONF(cskb->data,
-				     CapiFlagsNotSupportedByProtocol);
-	else
-		CAPIMSG_SETINFO_CONF(cskb->data, CAPI_NOERROR);
-
-	/* emit message */
-	dump_rawmsg(DEBUG_LLDATA, "DATA_B3_CONF", cskb->data);
-	capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
+	if (flags & CAPI_FLAGS_DELIVERY_CONFIRMATION)
+		send_data_b3_conf(cs, &iif->ctr, ap->id, CAPIMSG_MSGID(req),
+				  bcs->channel + 1, CAPIMSG_HANDLE_REQ(req),
+				  (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) ?
+					CapiFlagsNotSupportedByProtocol :
+					CAPI_NOERROR);
 }
 EXPORT_SYMBOL_GPL(gigaset_skb_sent);
 
@@ -412,7 +427,7 @@ void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
 	}
 
 	/* don't send further B3 messages if disconnected */
-	if (ap->connected < APCONN_ACTIVE) {
+	if (bcs->apconnstate < APCONN_ACTIVE) {
 		gig_dbg(DEBUG_LLDATA, "disconnected, discarding data");
 		dev_kfree_skb_any(skb);
 		return;
@@ -484,6 +499,7 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
 	u32 actCIPmask;
 	struct sk_buff *skb;
 	unsigned int msgsize;
+	unsigned long flags;
 	int i;
 
 	/*
@@ -608,7 +624,14 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
 		format_ie(iif->hcmsg.CalledPartyNumber));
 
 	/* scan application list for matching listeners */
-	bcs->ap = NULL;
+	spin_lock_irqsave(&bcs->aplock, flags);
+	if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE) {
+		dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
+			 __func__, bcs->ap, bcs->apconnstate);
+		bcs->ap = NULL;
+		bcs->apconnstate = APCONN_NONE;
+	}
+	spin_unlock_irqrestore(&bcs->aplock, flags);
 	actCIPmask = 1 | (1 << iif->hcmsg.CIPValue);
 	list_for_each_entry(ap, &iif->appls, ctrlist)
 		if (actCIPmask & ap->listenCIPmask) {
@@ -626,10 +649,12 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
 			dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
 
 			/* add to listeners on this B channel, update state */
+			spin_lock_irqsave(&bcs->aplock, flags);
 			ap->bcnext = bcs->ap;
 			bcs->ap = ap;
 			bcs->chstate |= CHS_NOTIFY_LL;
-			ap->connected = APCONN_SETUP;
+			bcs->apconnstate = APCONN_SETUP;
+			spin_unlock_irqrestore(&bcs->aplock, flags);
 
 			/* emit message */
 			capi_ctr_handle_message(&iif->ctr, ap->id, skb);
@@ -654,7 +679,7 @@ static void send_disconnect_ind(struct bc_state *bcs,
 	struct gigaset_capi_ctr *iif = cs->iif;
 	struct sk_buff *skb;
 
-	if (ap->connected == APCONN_NONE)
+	if (bcs->apconnstate == APCONN_NONE)
 		return;
 
 	capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND,
@@ -668,7 +693,6 @@ static void send_disconnect_ind(struct bc_state *bcs,
 	}
 	capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN));
 	dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
-	ap->connected = APCONN_NONE;
 	capi_ctr_handle_message(&iif->ctr, ap->id, skb);
 }
 
@@ -685,9 +709,9 @@ static void send_disconnect_b3_ind(struct bc_state *bcs,
 	struct sk_buff *skb;
 
 	/* nothing to do if no logical connection active */
-	if (ap->connected < APCONN_ACTIVE)
+	if (bcs->apconnstate < APCONN_ACTIVE)
 		return;
-	ap->connected = APCONN_SETUP;
+	bcs->apconnstate = APCONN_SETUP;
 
 	capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
 			 ap->nextMessageNumber++,
@@ -714,14 +738,25 @@ void gigaset_isdn_connD(struct bc_state *bcs)
 {
 	struct cardstate *cs = bcs->cs;
 	struct gigaset_capi_ctr *iif = cs->iif;
-	struct gigaset_capi_appl *ap = bcs->ap;
+	struct gigaset_capi_appl *ap;
 	struct sk_buff *skb;
 	unsigned int msgsize;
+	unsigned long flags;
 
+	spin_lock_irqsave(&bcs->aplock, flags);
+	ap = bcs->ap;
 	if (!ap) {
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 		dev_err(cs->dev, "%s: no application\n", __func__);
 		return;
 	}
+	if (bcs->apconnstate == APCONN_NONE) {
+		spin_unlock_irqrestore(&bcs->aplock, flags);
+		dev_warn(cs->dev, "%s: application %u not connected\n",
+			 __func__, ap->id);
+		return;
+	}
+	spin_unlock_irqrestore(&bcs->aplock, flags);
 	while (ap->bcnext) {
 		/* this should never happen */
 		dev_warn(cs->dev, "%s: dropping extra application %u\n",
@@ -730,11 +765,6 @@ void gigaset_isdn_connD(struct bc_state *bcs)
 				    CapiCallGivenToOtherApplication);
 		ap->bcnext = ap->bcnext->bcnext;
 	}
-	if (ap->connected == APCONN_NONE) {
-		dev_warn(cs->dev, "%s: application %u not connected\n",
-			 __func__, ap->id);
-		return;
-	}
 
 	/* prepare CONNECT_ACTIVE_IND message
 	 * Note: LLC not supported by device
@@ -772,17 +802,24 @@ void gigaset_isdn_connD(struct bc_state *bcs)
 void gigaset_isdn_hupD(struct bc_state *bcs)
 {
 	struct gigaset_capi_appl *ap;
+	unsigned long flags;
 
 	/*
 	 * ToDo: pass on reason code reported by device
 	 * (requires ev-layer state machine extension to collect
 	 * ZCAU device reply)
 	 */
-	for (ap = bcs->ap; ap != NULL; ap = ap->bcnext) {
+	spin_lock_irqsave(&bcs->aplock, flags);
+	while (bcs->ap != NULL) {
+		ap = bcs->ap;
+		bcs->ap = ap->bcnext;
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 		send_disconnect_b3_ind(bcs, ap);
 		send_disconnect_ind(bcs, ap, 0);
+		spin_lock_irqsave(&bcs->aplock, flags);
 	}
-	bcs->ap = NULL;
+	bcs->apconnstate = APCONN_NONE;
+	spin_unlock_irqrestore(&bcs->aplock, flags);
 }
 
 /**
@@ -796,24 +833,21 @@ void gigaset_isdn_connB(struct bc_state *bcs)
 {
 	struct cardstate *cs = bcs->cs;
 	struct gigaset_capi_ctr *iif = cs->iif;
-	struct gigaset_capi_appl *ap = bcs->ap;
+	struct gigaset_capi_appl *ap;
 	struct sk_buff *skb;
+	unsigned long flags;
 	unsigned int msgsize;
 	u8 command;
 
+	spin_lock_irqsave(&bcs->aplock, flags);
+	ap = bcs->ap;
 	if (!ap) {
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 		dev_err(cs->dev, "%s: no application\n", __func__);
 		return;
 	}
-	while (ap->bcnext) {
-		/* this should never happen */
-		dev_warn(cs->dev, "%s: dropping extra application %u\n",
-			 __func__, ap->bcnext->id);
-		send_disconnect_ind(bcs, ap->bcnext,
-				    CapiCallGivenToOtherApplication);
-		ap->bcnext = ap->bcnext->bcnext;
-	}
-	if (!ap->connected) {
+	if (!bcs->apconnstate) {
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 		dev_warn(cs->dev, "%s: application %u not connected\n",
 			 __func__, ap->id);
 		return;
@@ -825,13 +859,26 @@ void gigaset_isdn_connB(struct bc_state *bcs)
 	 * CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP
 	 * Parameters in both cases always: NCCI = 1, NCPI empty
 	 */
-	if (ap->connected >= APCONN_ACTIVE) {
+	if (bcs->apconnstate >= APCONN_ACTIVE) {
 		command = CAPI_CONNECT_B3_ACTIVE;
 		msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
 	} else {
 		command = CAPI_CONNECT_B3;
 		msgsize = CAPI_CONNECT_B3_IND_BASELEN;
 	}
+	bcs->apconnstate = APCONN_ACTIVE;
+
+	spin_unlock_irqrestore(&bcs->aplock, flags);
+
+	while (ap->bcnext) {
+		/* this should never happen */
+		dev_warn(cs->dev, "%s: dropping extra application %u\n",
+			 __func__, ap->bcnext->id);
+		send_disconnect_ind(bcs, ap->bcnext,
+				    CapiCallGivenToOtherApplication);
+		ap->bcnext = ap->bcnext->bcnext;
+	}
+
 	capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND,
 			 ap->nextMessageNumber++,
 			 iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
@@ -842,7 +889,6 @@ void gigaset_isdn_connB(struct bc_state *bcs)
 	}
 	capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
 	dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
-	ap->connected = APCONN_ACTIVE;
 	capi_ctr_handle_message(&iif->ctr, ap->id, skb);
 }
 
@@ -945,8 +991,64 @@ static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
 		return;
 	}
 	ap->id = appl;
+	ap->rp = *rp;
 
 	list_add(&ap->ctrlist, &iif->appls);
+	dev_info(cs->dev, "application %u registered\n", ap->id);
+}
+
+/*
+ * remove CAPI application from channel
+ * helper function to keep indentation levels down and stay in 80 columns
+ */
+
+static inline void remove_appl_from_channel(struct bc_state *bcs,
+					    struct gigaset_capi_appl *ap)
+{
+	struct cardstate *cs = bcs->cs;
+	struct gigaset_capi_appl *bcap;
+	unsigned long flags;
+	int prevconnstate;
+
+	spin_lock_irqsave(&bcs->aplock, flags);
+	bcap = bcs->ap;
+	if (bcap == NULL) {
+		spin_unlock_irqrestore(&bcs->aplock, flags);
+		return;
+	}
+
+	/* check first application on channel */
+	if (bcap == ap) {
+		bcs->ap = ap->bcnext;
+		if (bcs->ap != NULL) {
+			spin_unlock_irqrestore(&bcs->aplock, flags);
+			return;
+		}
+
+		/* none left, clear channel state */
+		prevconnstate = bcs->apconnstate;
+		bcs->apconnstate = APCONN_NONE;
+		spin_unlock_irqrestore(&bcs->aplock, flags);
+
+		if (prevconnstate == APCONN_ACTIVE) {
+			dev_notice(cs->dev, "%s: hanging up channel %u\n",
+				   __func__, bcs->channel);
+			gigaset_add_event(cs, &bcs->at_state,
+					  EV_HUP, NULL, 0, NULL);
+			gigaset_schedule_event(cs);
+		}
+		return;
+	}
+
+	/* check remaining list */
+	do {
+		if (bcap->bcnext == ap) {
+			bcap->bcnext = bcap->bcnext->bcnext;
+			return;
+		}
+		bcap = bcap->bcnext;
+	} while (bcap != NULL);
+	spin_unlock_irqrestore(&bcs->aplock, flags);
 }
 
 /*
@@ -958,19 +1060,19 @@ static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl)
 		= container_of(ctr, struct gigaset_capi_ctr, ctr);
 	struct cardstate *cs = iif->ctr.driverdata;
 	struct gigaset_capi_appl *ap, *tmp;
+	unsigned ch;
 
 	list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist)
 		if (ap->id == appl) {
-			if (ap->connected != APCONN_NONE) {
-				dev_err(cs->dev,
-					"%s: application %u still connected\n",
-					__func__, ap->id);
-				/* ToDo: clear active connection */
-			}
+			/* remove from any channels */
+			for (ch = 0; ch < cs->channels; ch++)
+				remove_appl_from_channel(&cs->bcs[ch], ap);
+
+			/* remove from registration list */
 			list_del(&ap->ctrlist);
 			kfree(ap);
+			dev_info(cs->dev, "application %u released\n", appl);
 		}
-
 }
 
 /*
@@ -1149,7 +1251,8 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 	char **commands;
 	char *s;
 	u8 *pp;
-	int i, l;
+	unsigned long flags;
+	int i, l, lbc, lhlc;
 	u16 info;
 
 	/* decode message */
@@ -1164,8 +1267,18 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 		send_conf(iif, ap, skb, CapiNoPlciAvailable);
 		return;
 	}
+	spin_lock_irqsave(&bcs->aplock, flags);
+	if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE)
+		dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
+			 __func__, bcs->ap, bcs->apconnstate);
 	ap->bcnext = NULL;
 	bcs->ap = ap;
+	bcs->apconnstate = APCONN_SETUP;
+	spin_unlock_irqrestore(&bcs->aplock, flags);
+
+	bcs->rx_bufsize = ap->rp.datablklen;
+	dev_kfree_skb(bcs->rx_skb);
+	gigaset_new_rx_skb(bcs);
 	cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8;
 
 	/* build command table */
@@ -1273,42 +1386,59 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 		goto error;
 	}
 
-	/* check/encode parameter: BC */
-	if (cmsg->BC && cmsg->BC[0]) {
-		/* explicit BC overrides CIP */
-		l = 2*cmsg->BC[0] + 7;
+	/*
+	 * check/encode parameters: BC & HLC
+	 * must be encoded together as device doesn't accept HLC separately
+	 * explicit parameters override values derived from CIP
+	 */
+
+	/* determine lengths */
+	if (cmsg->BC && cmsg->BC[0])		/* BC specified explicitly */
+		lbc = 2*cmsg->BC[0];
+	else if (cip2bchlc[cmsg->CIPValue].bc)	/* BC derived from CIP */
+		lbc = strlen(cip2bchlc[cmsg->CIPValue].bc);
+	else					/* no BC */
+		lbc = 0;
+	if (cmsg->HLC && cmsg->HLC[0])		/* HLC specified explicitly */
+		lhlc = 2*cmsg->HLC[0];
+	else if (cip2bchlc[cmsg->CIPValue].hlc)	/* HLC derived from CIP */
+		lhlc = strlen(cip2bchlc[cmsg->CIPValue].hlc);
+	else					/* no HLC */
+		lhlc = 0;
+
+	if (lbc) {
+		/* have BC: allocate and assemble command string */
+		l = lbc + 7;		/* "^SBC=" + value + "\r" + null byte */
+		if (lhlc)
+			l += lhlc + 7;	/* ";^SHLC=" + value */
 		commands[AT_BC] = kmalloc(l, GFP_KERNEL);
 		if (!commands[AT_BC])
 			goto oom;
 		strcpy(commands[AT_BC], "^SBC=");
-		decode_ie(cmsg->BC, commands[AT_BC]+5);
+		if (cmsg->BC && cmsg->BC[0])	/* BC specified explicitly */
+			decode_ie(cmsg->BC, commands[AT_BC] + 5);
+		else				/* BC derived from CIP */
+			strcpy(commands[AT_BC] + 5,
+			       cip2bchlc[cmsg->CIPValue].bc);
+		if (lhlc) {
+			strcpy(commands[AT_BC] + lbc + 5, ";^SHLC=");
+			if (cmsg->HLC && cmsg->HLC[0])
+				/* HLC specified explicitly */
+				decode_ie(cmsg->HLC,
+					  commands[AT_BC] + lbc + 12);
+			else	/* HLC derived from CIP */
+				strcpy(commands[AT_BC] + lbc + 12,
+				       cip2bchlc[cmsg->CIPValue].hlc);
+		}
 		strcpy(commands[AT_BC] + l - 2, "\r");
-	} else if (cip2bchlc[cmsg->CIPValue].bc) {
-		l = strlen(cip2bchlc[cmsg->CIPValue].bc) + 7;
-		commands[AT_BC] = kmalloc(l, GFP_KERNEL);
-		if (!commands[AT_BC])
-			goto oom;
-		snprintf(commands[AT_BC], l, "^SBC=%s\r",
-			 cip2bchlc[cmsg->CIPValue].bc);
-	}
-
-	/* check/encode parameter: HLC */
-	if (cmsg->HLC && cmsg->HLC[0]) {
-		/* explicit HLC overrides CIP */
-		l = 2*cmsg->HLC[0] + 7;
-		commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
-		if (!commands[AT_HLC])
-			goto oom;
-		strcpy(commands[AT_HLC], "^SHLC=");
-		decode_ie(cmsg->HLC, commands[AT_HLC]+5);
-		strcpy(commands[AT_HLC] + l - 2, "\r");
-	} else if (cip2bchlc[cmsg->CIPValue].hlc) {
-		l = strlen(cip2bchlc[cmsg->CIPValue].hlc) + 7;
-		commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
-		if (!commands[AT_HLC])
-			goto oom;
-		snprintf(commands[AT_HLC], l, "^SHLC=%s\r",
-			 cip2bchlc[cmsg->CIPValue].hlc);
+	} else {
+		/* no BC */
+		if (lhlc) {
+			dev_notice(cs->dev, "%s: cannot set HLC without BC\n",
+				   "CONNECT_REQ");
+			info = CapiIllMessageParmCoding; /* ? */
+			goto error;
+		}
 	}
 
 	/* check/encode parameter: B Protocol */
@@ -1322,13 +1452,13 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 			bcs->proto2 = L2_HDLC;
 			break;
 		case 1:
-			bcs->proto2 = L2_BITSYNC;
+			bcs->proto2 = L2_VOICE;
 			break;
 		default:
 			dev_warn(cs->dev,
 			    "B1 Protocol %u unsupported, using Transparent\n",
 				 cmsg->B1protocol);
-			bcs->proto2 = L2_BITSYNC;
+			bcs->proto2 = L2_VOICE;
 		}
 		if (cmsg->B2protocol != 1)
 			dev_warn(cs->dev,
@@ -1382,7 +1512,6 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 		goto error;
 	}
 	gigaset_schedule_event(cs);
-	ap->connected = APCONN_SETUP;
 	send_conf(iif, ap, skb, CapiSuccess);
 	return;
 
@@ -1410,6 +1539,7 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
 	_cmsg *cmsg = &iif->acmsg;
 	struct bc_state *bcs;
 	struct gigaset_capi_appl *oap;
+	unsigned long flags;
 	int channel;
 
 	/* decode message */
@@ -1429,12 +1559,24 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
 	switch (cmsg->Reject) {
 	case 0:		/* Accept */
 		/* drop all competing applications, keep only this one */
-		for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
-			if (oap != ap)
+		spin_lock_irqsave(&bcs->aplock, flags);
+		while (bcs->ap != NULL) {
+			oap = bcs->ap;
+			bcs->ap = oap->bcnext;
+			if (oap != ap) {
+				spin_unlock_irqrestore(&bcs->aplock, flags);
 				send_disconnect_ind(bcs, oap,
 					CapiCallGivenToOtherApplication);
+				spin_lock_irqsave(&bcs->aplock, flags);
+			}
+		}
 		ap->bcnext = NULL;
 		bcs->ap = ap;
+		spin_unlock_irqrestore(&bcs->aplock, flags);
+
+		bcs->rx_bufsize = ap->rp.datablklen;
+		dev_kfree_skb(bcs->rx_skb);
+		gigaset_new_rx_skb(bcs);
 		bcs->chstate |= CHS_NOTIFY_LL;
 
 		/* check/encode B channel protocol */
@@ -1448,13 +1590,13 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
 				bcs->proto2 = L2_HDLC;
 				break;
 			case 1:
-				bcs->proto2 = L2_BITSYNC;
+				bcs->proto2 = L2_VOICE;
 				break;
 			default:
 				dev_warn(cs->dev,
 			"B1 Protocol %u unsupported, using Transparent\n",
 					 cmsg->B1protocol);
-				bcs->proto2 = L2_BITSYNC;
+				bcs->proto2 = L2_VOICE;
 			}
 			if (cmsg->B2protocol != 1)
 				dev_warn(cs->dev,
@@ -1502,31 +1644,45 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
 		send_disconnect_ind(bcs, ap, 0);
 
 		/* remove it from the list of listening apps */
+		spin_lock_irqsave(&bcs->aplock, flags);
 		if (bcs->ap == ap) {
 			bcs->ap = ap->bcnext;
-			if (bcs->ap == NULL)
+			if (bcs->ap == NULL) {
 				/* last one: stop ev-layer hupD notifications */
+				bcs->apconnstate = APCONN_NONE;
 				bcs->chstate &= ~CHS_NOTIFY_LL;
+			}
+			spin_unlock_irqrestore(&bcs->aplock, flags);
 			return;
 		}
 		for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) {
 			if (oap->bcnext == ap) {
 				oap->bcnext = oap->bcnext->bcnext;
+				spin_unlock_irqrestore(&bcs->aplock, flags);
 				return;
 			}
 		}
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 		dev_err(cs->dev, "%s: application %u not found\n",
 			__func__, ap->id);
 		return;
 
 	default:		/* Reject */
 		/* drop all competing applications, keep only this one */
-		for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
-			if (oap != ap)
+		spin_lock_irqsave(&bcs->aplock, flags);
+		while (bcs->ap != NULL) {
+			oap = bcs->ap;
+			bcs->ap = oap->bcnext;
+			if (oap != ap) {
+				spin_unlock_irqrestore(&bcs->aplock, flags);
 				send_disconnect_ind(bcs, oap,
 					CapiCallGivenToOtherApplication);
+				spin_lock_irqsave(&bcs->aplock, flags);
+			}
+		}
 		ap->bcnext = NULL;
 		bcs->ap = ap;
+		spin_unlock_irqrestore(&bcs->aplock, flags);
 
 		/* reject call - will trigger DISCONNECT_IND for this app */
 		dev_info(cs->dev, "%s: Reject=%x\n",
@@ -1549,6 +1705,7 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
 {
 	struct cardstate *cs = iif->ctr.driverdata;
 	_cmsg *cmsg = &iif->acmsg;
+	struct bc_state *bcs;
 	int channel;
 
 	/* decode message */
@@ -1563,9 +1720,10 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
 		send_conf(iif, ap, skb, CapiIllContrPlciNcci);
 		return;
 	}
+	bcs = &cs->bcs[channel-1];
 
 	/* mark logical connection active */
-	ap->connected = APCONN_ACTIVE;
+	bcs->apconnstate = APCONN_ACTIVE;
 
 	/* build NCCI: always 1 (one B3 connection only) */
 	cmsg->adr.adrNCCI |= 1 << 16;
@@ -1611,7 +1769,7 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
 
 	if (cmsg->Reject) {
 		/* Reject: clear B3 connect received flag */
-		ap->connected = APCONN_SETUP;
+		bcs->apconnstate = APCONN_SETUP;
 
 		/* trigger hangup, causing eventual DISCONNECT_IND */
 		if (!gigaset_add_event(cs, &bcs->at_state,
@@ -1683,11 +1841,11 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
 	}
 
 	/* skip if DISCONNECT_IND already sent */
-	if (!ap->connected)
+	if (!bcs->apconnstate)
 		return;
 
 	/* check for active logical connection */
-	if (ap->connected >= APCONN_ACTIVE) {
+	if (bcs->apconnstate >= APCONN_ACTIVE) {
 		/*
 		 * emit DISCONNECT_B3_IND with cause 0x3301
 		 * use separate cmsg structure, as the content of iif->acmsg
@@ -1736,6 +1894,7 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
 {
 	struct cardstate *cs = iif->ctr.driverdata;
 	_cmsg *cmsg = &iif->acmsg;
+	struct bc_state *bcs;
 	int channel;
 
 	/* decode message */
@@ -1751,17 +1910,17 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
 		send_conf(iif, ap, skb, CapiIllContrPlciNcci);
 		return;
 	}
+	bcs = &cs->bcs[channel-1];
 
 	/* reject if logical connection not active */
-	if (ap->connected < APCONN_ACTIVE) {
+	if (bcs->apconnstate < APCONN_ACTIVE) {
 		send_conf(iif, ap, skb,
 			  CapiMessageNotSupportedInCurrentState);
 		return;
 	}
 
 	/* trigger hangup, causing eventual DISCONNECT_B3_IND */
-	if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state,
-			       EV_HUP, NULL, 0, NULL)) {
+	if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) {
 		send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
 		return;
 	}
@@ -1782,11 +1941,14 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
 			   struct sk_buff *skb)
 {
 	struct cardstate *cs = iif->ctr.driverdata;
+	struct bc_state *bcs;
 	int channel = CAPIMSG_PLCI_PART(skb->data);
 	u16 ncci = CAPIMSG_NCCI_PART(skb->data);
 	u16 msglen = CAPIMSG_LEN(skb->data);
 	u16 datalen = CAPIMSG_DATALEN(skb->data);
 	u16 flags = CAPIMSG_FLAGS(skb->data);
+	u16 msgid = CAPIMSG_MSGID(skb->data);
+	u16 handle = CAPIMSG_HANDLE_REQ(skb->data);
 
 	/* frequent message, avoid _cmsg overhead */
 	dump_rawmsg(DEBUG_LLDATA, "DATA_B3_REQ", skb->data);
@@ -1802,6 +1964,7 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
 		send_conf(iif, ap, skb, CapiIllContrPlciNcci);
 		return;
 	}
+	bcs = &cs->bcs[channel-1];
 	if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64)
 		dev_notice(cs->dev, "%s: unexpected length %d\n",
 			   "DATA_B3_REQ", msglen);
@@ -1821,7 +1984,7 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
 	}
 
 	/* reject if logical connection not active */
-	if (ap->connected < APCONN_ACTIVE) {
+	if (bcs->apconnstate < APCONN_ACTIVE) {
 		send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
 		return;
 	}
@@ -1832,17 +1995,19 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif,
 	skb_pull(skb, msglen);
 
 	/* pass to device-specific module */
-	if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) {
+	if (cs->ops->send_skb(bcs, skb) < 0) {
 		send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
 		return;
 	}
 
-	/* DATA_B3_CONF reply will be sent by gigaset_skb_sent() */
-
 	/*
-	 * ToDo: honor unset "delivery confirmation" bit
-	 * (send DATA_B3_CONF immediately?)
+	 * DATA_B3_CONF will be sent by gigaset_skb_sent() only if "delivery
+	 * confirmation" bit is set; otherwise we have to send it now
 	 */
+	if (!(flags & CAPI_FLAGS_DELIVERY_CONFIRMATION))
+		send_data_b3_conf(cs, &iif->ctr, ap->id, msgid, channel, handle,
+				  flags ? CapiFlagsNotSupportedByProtocol
+					: CAPI_NOERROR);
 }
 
 /*
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index f6f45f2..5d4befb 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -399,8 +399,8 @@ static void gigaset_freebcs(struct bc_state *bcs)
 	gig_dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel);
 	clear_at_state(&bcs->at_state);
 	gig_dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel);
-	dev_kfree_skb(bcs->skb);
-	bcs->skb = NULL;
+	dev_kfree_skb(bcs->rx_skb);
+	bcs->rx_skb = NULL;
 
 	for (i = 0; i < AT_NUM; ++i) {
 		kfree(bcs->commands[i]);
@@ -634,19 +634,10 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
 	bcs->emptycount = 0;
 #endif
 
-	gig_dbg(DEBUG_INIT, "allocating bcs[%d]->skb", channel);
-	bcs->fcs = PPP_INITFCS;
+	bcs->rx_bufsize = 0;
+	bcs->rx_skb = NULL;
+	bcs->rx_fcs = PPP_INITFCS;
 	bcs->inputstate = 0;
-	if (cs->ignoreframes) {
-		bcs->skb = NULL;
-	} else {
-		bcs->skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
-		if (bcs->skb != NULL)
-			skb_reserve(bcs->skb, cs->hw_hdr_len);
-		else
-			pr_err("out of memory\n");
-	}
-
 	bcs->channel = channel;
 	bcs->cs = cs;
 
@@ -658,16 +649,15 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
 	for (i = 0; i < AT_NUM; ++i)
 		bcs->commands[i] = NULL;
 
+	spin_lock_init(&bcs->aplock);
+	bcs->ap = NULL;
+	bcs->apconnstate = 0;
+
 	gig_dbg(DEBUG_INIT, "  setting up bcs[%d]->hw", channel);
 	if (cs->ops->initbcshw(bcs))
 		return bcs;
 
 	gig_dbg(DEBUG_INIT, "  failed");
-
-	gig_dbg(DEBUG_INIT, "  freeing bcs[%d]->skb", channel);
-	dev_kfree_skb(bcs->skb);
-	bcs->skb = NULL;
-
 	return NULL;
 }
 
@@ -839,14 +829,12 @@ void gigaset_bcs_reinit(struct bc_state *bcs)
 	bcs->emptycount = 0;
 #endif
 
-	bcs->fcs = PPP_INITFCS;
+	bcs->rx_fcs = PPP_INITFCS;
 	bcs->chstate = 0;
 
 	bcs->ignore = cs->ignoreframes;
-	if (bcs->ignore) {
-		dev_kfree_skb(bcs->skb);
-		bcs->skb = NULL;
-	}
+	dev_kfree_skb(bcs->rx_skb);
+	bcs->rx_skb = NULL;
 
 	cs->ops->reinitbcshw(bcs);
 }
diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c
index 206c380..ceaef9a 100644
--- a/drivers/isdn/gigaset/ev-layer.c
+++ b/drivers/isdn/gigaset/ev-layer.c
@@ -282,9 +282,7 @@ struct reply_t gigaset_tab_cid[] =
 /* dial */
 {EV_DIAL,	 -1,  -1, -1,			 -1, -1, {ACT_DIAL} },
 {RSP_INIT,	  0,   0, SEQ_DIAL,		601,  5, {ACT_CMD+AT_BC} },
-{RSP_OK,	601, 601, -1,			602,  5, {ACT_CMD+AT_HLC} },
-{RSP_NULL,	602, 602, -1,			603,  5, {ACT_CMD+AT_PROTO} },
-{RSP_OK,	602, 602, -1,			603,  5, {ACT_CMD+AT_PROTO} },
+{RSP_OK,	601, 601, -1,			603,  5, {ACT_CMD+AT_PROTO} },
 {RSP_OK,	603, 603, -1,			604,  5, {ACT_CMD+AT_TYPE} },
 {RSP_OK,	604, 604, -1,			605,  5, {ACT_CMD+AT_MSN} },
 {RSP_NULL,	605, 605, -1,			606,  5, {ACT_CMD+AT_CLIP} },
diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h
index 05947f9..8738b08 100644
--- a/drivers/isdn/gigaset/gigaset.h
+++ b/drivers/isdn/gigaset/gigaset.h
@@ -45,10 +45,6 @@
 #define MAX_EVENTS 64		/* size of event queue */
 
 #define RBUFSIZE 8192
-#define SBUFSIZE 4096		/* sk_buff payload size */
-
-#define TRANSBUFSIZE 768	/* bytes per skb for transparent receive */
-#define MAX_BUF_SIZE (SBUFSIZE - 2)	/* Max. size of a data packet from LL */
 
 /* compile time options */
 #define GIG_MAJOR 0
@@ -190,10 +186,9 @@ void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
 #define AT_BC		3
 #define AT_PROTO	4
 #define AT_TYPE		5
-#define AT_HLC		6
-#define AT_CLIP		7
+#define AT_CLIP		6
 /* total number */
-#define AT_NUM		8
+#define AT_NUM		7
 
 /* variables in struct at_state_t */
 #define VAR_ZSAU	0
@@ -380,8 +375,10 @@ struct bc_state {
 
 	struct at_state_t at_state;
 
-	__u16 fcs;
-	struct sk_buff *skb;
+	/* receive buffer */
+	unsigned rx_bufsize;		/* max size accepted by application */
+	struct sk_buff *rx_skb;
+	__u16 rx_fcs;
 	int inputstate;			/* see INS_XXXX */
 
 	int channel;
@@ -406,7 +403,9 @@ struct bc_state {
 		struct bas_bc_state *bas;	/* usb hardware driver (base) */
 	} hw;
 
-	void *ap;			/* LL application structure */
+	void *ap;			/* associated LL application */
+	int apconnstate;		/* LL application connection state */
+	spinlock_t aplock;
 };
 
 struct cardstate {
@@ -801,8 +800,23 @@ static inline void gigaset_bchannel_up(struct bc_state *bcs)
 	gigaset_schedule_event(bcs->cs);
 }
 
-/* handling routines for sk_buff */
-/* ============================= */
+/* set up next receive skb for data mode */
+static inline struct sk_buff *gigaset_new_rx_skb(struct bc_state *bcs)
+{
+	struct cardstate *cs = bcs->cs;
+	unsigned short hw_hdr_len = cs->hw_hdr_len;
+
+	if (bcs->ignore) {
+		bcs->rx_skb = NULL;
+	} else {
+		bcs->rx_skb = dev_alloc_skb(bcs->rx_bufsize + hw_hdr_len);
+		if (bcs->rx_skb == NULL)
+			dev_warn(cs->dev, "could not allocate skb\n");
+		else
+			skb_reserve(bcs->rx_skb, hw_hdr_len);
+	}
+	return bcs->rx_skb;
+}
 
 /* append received bytes to inbuf */
 int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c
index c22e5ac..f01c3c2 100644
--- a/drivers/isdn/gigaset/i4l.c
+++ b/drivers/isdn/gigaset/i4l.c
@@ -16,7 +16,10 @@
 #include "gigaset.h"
 #include <linux/isdnif.h>
 
+#define SBUFSIZE	4096	/* sk_buff payload size */
+#define TRANSBUFSIZE	768	/* bytes per skb for transparent receive */
 #define HW_HDR_LEN	2	/* Header size used to store ack info */
+#define MAX_BUF_SIZE	(SBUFSIZE - HW_HDR_LEN)	/* max data packet from LL */
 
 /* == Handling of I4L IO =====================================================*/
 
@@ -231,6 +234,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
 			dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
 			return -EBUSY;
 		}
+		switch (bcs->proto2) {
+		case L2_HDLC:
+			bcs->rx_bufsize = SBUFSIZE;
+			break;
+		default:			/* assume transparent */
+			bcs->rx_bufsize = TRANSBUFSIZE;
+		}
+		dev_kfree_skb(bcs->rx_skb);
+		gigaset_new_rx_skb(bcs);
 
 		commands = kzalloc(AT_NUM*(sizeof *commands), GFP_ATOMIC);
 		if (!commands) {
@@ -314,6 +326,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
 			return -EINVAL;
 		}
 		bcs = cs->bcs + ch;
+		switch (bcs->proto2) {
+		case L2_HDLC:
+			bcs->rx_bufsize = SBUFSIZE;
+			break;
+		default:			/* assume transparent */
+			bcs->rx_bufsize = TRANSBUFSIZE;
+		}
+		dev_kfree_skb(bcs->rx_skb);
+		gigaset_new_rx_skb(bcs);
 		if (!gigaset_add_event(cs, &bcs->at_state,
 				       EV_ACCEPT, NULL, 0, NULL))
 			return -ENOMEM;
diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index 16fd3bd..2dfd346 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -500,19 +500,18 @@ int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len)
  */
 static inline void hdlc_putbyte(unsigned char c, struct bc_state *bcs)
 {
-	bcs->fcs = crc_ccitt_byte(bcs->fcs, c);
-	if (unlikely(bcs->skb == NULL)) {
+	bcs->rx_fcs = crc_ccitt_byte(bcs->rx_fcs, c);
+	if (bcs->rx_skb == NULL)
 		/* skipping */
 		return;
-	}
-	if (unlikely(bcs->skb->len == SBUFSIZE)) {
+	if (bcs->rx_skb->len >= bcs->rx_bufsize) {
 		dev_warn(bcs->cs->dev, "received oversized packet discarded\n");
 		bcs->hw.bas->giants++;
-		dev_kfree_skb_any(bcs->skb);
-		bcs->skb = NULL;
+		dev_kfree_skb_any(bcs->rx_skb);
+		bcs->rx_skb = NULL;
 		return;
 	}
-	*__skb_put(bcs->skb, 1) = c;
+	*__skb_put(bcs->rx_skb, 1) = c;
 }
 
 /* hdlc_flush
@@ -521,18 +520,13 @@ static inline void hdlc_putbyte(unsigned char c, struct bc_state *bcs)
 static inline void hdlc_flush(struct bc_state *bcs)
 {
 	/* clear skb or allocate new if not skipping */
-	if (likely(bcs->skb != NULL))
-		skb_trim(bcs->skb, 0);
-	else if (!bcs->ignore) {
-		bcs->skb = dev_alloc_skb(SBUFSIZE + bcs->cs->hw_hdr_len);
-		if (bcs->skb)
-			skb_reserve(bcs->skb, bcs->cs->hw_hdr_len);
-		else
-			dev_err(bcs->cs->dev, "could not allocate skb\n");
-	}
+	if (bcs->rx_skb != NULL)
+		skb_trim(bcs->rx_skb, 0);
+	else
+		gigaset_new_rx_skb(bcs);
 
 	/* reset packet state */
-	bcs->fcs = PPP_INITFCS;
+	bcs->rx_fcs = PPP_INITFCS;
 }
 
 /* hdlc_done
@@ -549,7 +543,7 @@ static inline void hdlc_done(struct bc_state *bcs)
 		hdlc_flush(bcs);
 		return;
 	}
-	procskb = bcs->skb;
+	procskb = bcs->rx_skb;
 	if (procskb == NULL) {
 		/* previous error */
 		gig_dbg(DEBUG_ISO, "%s: skb=NULL", __func__);
@@ -560,8 +554,8 @@ static inline void hdlc_done(struct bc_state *bcs)
 		bcs->hw.bas->runts++;
 		dev_kfree_skb_any(procskb);
 		gigaset_isdn_rcv_err(bcs);
-	} else if (bcs->fcs != PPP_GOODFCS) {
-		dev_notice(cs->dev, "frame check error (0x%04x)\n", bcs->fcs);
+	} else if (bcs->rx_fcs != PPP_GOODFCS) {
+		dev_notice(cs->dev, "frame check error\n");
 		bcs->hw.bas->fcserrs++;
 		dev_kfree_skb_any(procskb);
 		gigaset_isdn_rcv_err(bcs);
@@ -574,13 +568,8 @@ static inline void hdlc_done(struct bc_state *bcs)
 		bcs->hw.bas->goodbytes += len;
 		gigaset_skb_rcvd(bcs, procskb);
 	}
-
-	bcs->skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
-	if (bcs->skb)
-		skb_reserve(bcs->skb, cs->hw_hdr_len);
-	else
-		dev_err(cs->dev, "could not allocate skb\n");
-	bcs->fcs = PPP_INITFCS;
+	gigaset_new_rx_skb(bcs);
+	bcs->rx_fcs = PPP_INITFCS;
 }
 
 /* hdlc_frag
@@ -597,8 +586,8 @@ static inline void hdlc_frag(struct bc_state *bcs, unsigned inbits)
 	dev_notice(bcs->cs->dev, "received partial byte (%d bits)\n", inbits);
 	bcs->hw.bas->alignerrs++;
 	gigaset_isdn_rcv_err(bcs);
-	__skb_trim(bcs->skb, 0);
-	bcs->fcs = PPP_INITFCS;
+	__skb_trim(bcs->rx_skb, 0);
+	bcs->rx_fcs = PPP_INITFCS;
 }
 
 /* bit counts lookup table for HDLC bit unstuffing
@@ -847,7 +836,6 @@ static inline void hdlc_unpack(unsigned char *src, unsigned count,
 static inline void trans_receive(unsigned char *src, unsigned count,
 				 struct bc_state *bcs)
 {
-	struct cardstate *cs = bcs->cs;
 	struct sk_buff *skb;
 	int dobytes;
 	unsigned char *dst;
@@ -857,17 +845,11 @@ static inline void trans_receive(unsigned char *src, unsigned count,
 		hdlc_flush(bcs);
 		return;
 	}
-	skb = bcs->skb;
-	if (unlikely(skb == NULL)) {
-		bcs->skb = skb = dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
-		if (!skb) {
-			dev_err(cs->dev, "could not allocate skb\n");
-			return;
-		}
-		skb_reserve(skb, cs->hw_hdr_len);
-	}
+	skb = bcs->rx_skb;
+	if (skb == NULL)
+		skb = gigaset_new_rx_skb(bcs);
 	bcs->hw.bas->goodbytes += skb->len;
-	dobytes = TRANSBUFSIZE - skb->len;
+	dobytes = bcs->rx_bufsize - skb->len;
 	while (count > 0) {
 		dst = skb_put(skb, count < dobytes ? count : dobytes);
 		while (count > 0 && dobytes > 0) {
@@ -879,14 +861,10 @@ static inline void trans_receive(unsigned char *src, unsigned count,
 			dump_bytes(DEBUG_STREAM_DUMP,
 				   "rcv data", skb->data, skb->len);
 			gigaset_skb_rcvd(bcs, skb);
-			bcs->skb = skb =
-				dev_alloc_skb(SBUFSIZE + cs->hw_hdr_len);
-			if (!skb) {
-				dev_err(cs->dev, "could not allocate skb\n");
+			skb = gigaset_new_rx_skb(bcs);
+			if (skb == NULL)
 				return;
-			}
-			skb_reserve(skb, cs->hw_hdr_len);
-			dobytes = TRANSBUFSIZE;
+			dobytes = bcs->rx_bufsize;
 		}
 	}
 }
diff --git a/drivers/isdn/hysdn/hysdn_net.c b/drivers/isdn/hysdn/hysdn_net.c
index 72eb926..feec8d8 100644
--- a/drivers/isdn/hysdn/hysdn_net.c
+++ b/drivers/isdn/hysdn/hysdn_net.c
@@ -187,12 +187,13 @@ void
 hysdn_rx_netpkt(hysdn_card * card, unsigned char *buf, unsigned short len)
 {
 	struct net_local *lp = card->netif;
-	struct net_device *dev = lp->dev;
+	struct net_device *dev;
 	struct sk_buff *skb;
 
 	if (!lp)
 		return;		/* non existing device */
 
+	dev = lp->dev;
 	dev->stats.rx_bytes += len;
 
 	skb = dev_alloc_skb(len);
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 25c14c6..3662d6e 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -333,7 +333,8 @@ static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
 
 	if ((client_info->assigned) &&
 	    (client_info->ip_src == arp->ip_dst) &&
-	    (client_info->ip_dst == arp->ip_src)) {
+	    (client_info->ip_dst == arp->ip_src) &&
+	    (compare_ether_addr_64bits(client_info->mac_dst, arp->mac_src))) {
 		/* update the clients MAC address */
 		memcpy(client_info->mac_dst, arp->mac_src, ETH_ALEN);
 		client_info->ntt = 1;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 9bb9bfa..8228088 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -176,7 +176,7 @@ static int arp_ip_count;
 static int bond_mode	= BOND_MODE_ROUNDROBIN;
 static int xmit_hashtype = BOND_XMIT_POLICY_LAYER2;
 static int lacp_fast;
-
+static int disable_netpoll = 1;
 
 const struct bond_parm_tbl bond_lacp_tbl[] = {
 {	"slow",		AD_LACP_SLOW},
@@ -1766,15 +1766,23 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 	bond_set_carrier(bond);
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
-	if (slaves_support_netpoll(bond_dev)) {
-		bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
-		if (bond_dev->npinfo)
-			slave_dev->npinfo = bond_dev->npinfo;
-	} else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) {
+	/*
+	 * Netpoll and bonding is broken, make sure it is not initialized
+	 * until it is fixed.
+	 */
+	if (disable_netpoll) {
 		bond_dev->priv_flags |= IFF_DISABLE_NETPOLL;
-		pr_info("New slave device %s does not support netpoll\n",
-			slave_dev->name);
-		pr_info("Disabling netpoll support for %s\n", bond_dev->name);
+	} else {
+		if (slaves_support_netpoll(bond_dev)) {
+			bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+			if (bond_dev->npinfo)
+				slave_dev->npinfo = bond_dev->npinfo;
+		} else if (!(bond_dev->priv_flags & IFF_DISABLE_NETPOLL)) {
+			bond_dev->priv_flags |= IFF_DISABLE_NETPOLL;
+			pr_info("New slave device %s does not support netpoll\n",
+				slave_dev->name);
+			pr_info("Disabling netpoll support for %s\n", bond_dev->name);
+		}
 	}
 #endif
 	read_unlock(&bond->lock);
@@ -1977,8 +1985,11 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
 
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	read_lock_bh(&bond->lock);
-	if (slaves_support_netpoll(bond_dev))
-		bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+
+	 /* Make sure netpoll over stays disabled until fixed. */
+	if (!disable_netpoll)
+		if (slaves_support_netpoll(bond_dev))
+				bond_dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
 	read_unlock_bh(&bond->lock);
 	if (slave_dev->netdev_ops->ndo_netpoll_cleanup)
 		slave_dev->netdev_ops->ndo_netpoll_cleanup(slave_dev);
diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 1756d28..38de1a4 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -1181,7 +1181,8 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
 		if (netif_msg_drv(priv))
 			printk(KERN_ERR "%s: Could not attach to PHY\n",
 			       dev->name);
-		return PTR_ERR(priv->phy);
+		rc = PTR_ERR(priv->phy);
+		goto fail;
 	}
 
 	if ((rc = register_netdev(dev))) {
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 55099a5..b235aa1 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3741,10 +3741,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
 	/* signal that we are down to the interrupt handler */
 	set_bit(__IXGBE_DOWN, &adapter->state);
 
-	/* power down the optics */
-	if (hw->phy.multispeed_fiber)
-		hw->mac.ops.disable_tx_laser(hw);
-
 	/* disable receive for all VFs and wait one second */
 	if (adapter->num_vfs) {
 		/* ping all the active vfs to let them know we are going down */
@@ -3799,6 +3795,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
 		                (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
 		                 ~IXGBE_DMATXCTL_TE));
 
+	/* power down the optics */
+	if (hw->phy.multispeed_fiber)
+		hw->mac.ops.disable_tx_laser(hw);
+
 	/* clear n-tuple filters that are cached */
 	ethtool_ntuple_flush(netdev);
 
@@ -4058,7 +4058,7 @@ static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
 
 done:
 	/* Notify the stack of the (possibly) reduced Tx Queue count. */
-	adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
+	netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
 }
 
 static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
@@ -5246,7 +5246,6 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
 		ixgbe_free_all_tx_resources(adapter);
 		ixgbe_free_all_rx_resources(adapter);
 	}
-	ixgbe_clear_interrupt_scheme(adapter);
 
 #ifdef CONFIG_PM
 	retval = pci_save_state(pdev);
@@ -5281,6 +5280,8 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
 
 	*enable_wake = !!wufc;
 
+	ixgbe_clear_interrupt_scheme(adapter);
+
 	ixgbe_release_hw_control(adapter);
 
 	pci_disable_device(pdev);
@@ -6071,7 +6072,6 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
 static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
 	              int queue, u32 tx_flags)
 {
-	/* Right now, we support IPv4 only */
 	struct ixgbe_atr_input atr_input;
 	struct tcphdr *th;
 	struct iphdr *iph = ip_hdr(skb);
@@ -6080,6 +6080,9 @@ static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
 	u32 src_ipv4_addr, dst_ipv4_addr;
 	u8 l4type = 0;
 
+	/* Right now, we support IPv4 only */
+	if (skb->protocol != htons(ETH_P_IP))
+		return;
 	/* check if we're UDP or TCP */
 	if (iph->protocol == IPPROTO_TCP) {
 		th = tcp_hdr(skb);
diff --git a/drivers/net/ll_temac_main.c b/drivers/net/ll_temac_main.c
index 7b12d0e..fa303c8 100644
--- a/drivers/net/ll_temac_main.c
+++ b/drivers/net/ll_temac_main.c
@@ -985,7 +985,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 	np = of_parse_phandle(op->dev.of_node, "llink-connected", 0);
 	if (!np) {
 		dev_err(&op->dev, "could not find DMA node\n");
-		goto nodev;
+		goto err_iounmap;
 	}
 
 	/* Setup the DMA register accesses, could be DCR or memory mapped */
@@ -999,7 +999,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 			dev_dbg(&op->dev, "MEM base: %p\n", lp->sdma_regs);
 		} else {
 			dev_err(&op->dev, "unable to map DMA registers\n");
-			goto nodev;
+			goto err_iounmap;
 		}
 	}
 
@@ -1008,7 +1008,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 	if ((lp->rx_irq == NO_IRQ) || (lp->tx_irq == NO_IRQ)) {
 		dev_err(&op->dev, "could not determine irqs\n");
 		rc = -ENOMEM;
-		goto nodev;
+		goto err_iounmap_2;
 	}
 
 	of_node_put(np); /* Finished with the DMA node; drop the reference */
@@ -1018,7 +1018,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 	if ((!addr) || (size != 6)) {
 		dev_err(&op->dev, "could not find MAC address\n");
 		rc = -ENODEV;
-		goto nodev;
+		goto err_iounmap_2;
 	}
 	temac_set_mac_address(ndev, (void *)addr);
 
@@ -1034,7 +1034,7 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 	rc = sysfs_create_group(&lp->dev->kobj, &temac_attr_group);
 	if (rc) {
 		dev_err(lp->dev, "Error creating sysfs files\n");
-		goto nodev;
+		goto err_iounmap_2;
 	}
 
 	rc = register_netdev(lp->ndev);
@@ -1047,6 +1047,11 @@ temac_of_probe(struct of_device *op, const struct of_device_id *match)
 
  err_register_ndev:
 	sysfs_remove_group(&lp->dev->kobj, &temac_attr_group);
+ err_iounmap_2:
+	if (lp->sdma_regs)
+		iounmap(lp->sdma_regs);
+ err_iounmap:
+	iounmap(lp->regs);
  nodev:
 	free_netdev(ndev);
 	ndev = NULL;
@@ -1065,6 +1070,9 @@ static int __devexit temac_of_remove(struct of_device *op)
 		of_node_put(lp->phy_node);
 	lp->phy_node = NULL;
 	dev_set_drvdata(&op->dev, NULL);
+	iounmap(lp->regs);
+	if (lp->sdma_regs)
+		iounmap(lp->sdma_regs);
 	free_netdev(ndev);
 	return 0;
 }
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 82b720f..af075af 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -289,6 +289,7 @@ struct mv643xx_eth_shared_private {
 	unsigned int t_clk;
 	int extended_rx_coal_limit;
 	int tx_bw_control;
+	int tx_csum_limit;
 };
 
 #define TX_BW_CONTROL_ABSENT		0
@@ -776,13 +777,16 @@ static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
 	l4i_chk = 0;
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		int hdr_len;
 		int tag_bytes;
 
 		BUG_ON(skb->protocol != htons(ETH_P_IP) &&
 		       skb->protocol != htons(ETH_P_8021Q));
 
-		tag_bytes = (void *)ip_hdr(skb) - (void *)skb->data - ETH_HLEN;
-		if (unlikely(tag_bytes & ~12)) {
+		hdr_len = (void *)ip_hdr(skb) - (void *)skb->data;
+		tag_bytes = hdr_len - ETH_HLEN;
+		if (skb->len - hdr_len > mp->shared->tx_csum_limit ||
+		    unlikely(tag_bytes & ~12)) {
 			if (skb_checksum_help(skb) == 0)
 				goto no_csum;
 			kfree_skb(skb);
@@ -2671,6 +2675,7 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 	 * Detect hardware parameters.
 	 */
 	msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
+	msp->tx_csum_limit = pd->tx_csum_limit ? pd->tx_csum_limit : 9 * 1024;
 	infer_hw_params(msp);
 
 	platform_set_drvdata(pdev, msp);
diff --git a/drivers/net/ne.c b/drivers/net/ne.c
index b8e2923..1063093 100644
--- a/drivers/net/ne.c
+++ b/drivers/net/ne.c
@@ -806,8 +806,10 @@ static int __init ne_drv_probe(struct platform_device *pdev)
 		dev->base_addr = res->start;
 		dev->irq = platform_get_irq(pdev, 0);
 	} else {
-		if (this_dev < 0 || this_dev >= MAX_NE_CARDS)
+		if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
+			free_netdev(dev);
 			return -EINVAL;
+		}
 		dev->base_addr = io[this_dev];
 		dev->irq = irq[this_dev];
 		dev->mem_end = bad[this_dev];
diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c
index 64e6a84..307cd17 100644
--- a/drivers/net/pcmcia/smc91c92_cs.c
+++ b/drivers/net/pcmcia/smc91c92_cs.c
@@ -1505,12 +1505,20 @@ irq_done:
 	writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_LAN + CISREG_COR);
 	writeb(cor, smc->base + MOT_LAN + CISREG_COR);
     }
-#ifdef DOES_NOT_WORK
-    if (smc->base != NULL) { /* Megahertz MFC's */
-	readb(smc->base+MEGAHERTZ_ISR);
-	readb(smc->base+MEGAHERTZ_ISR);
+
+    if ((smc->base != NULL) &&  /* Megahertz MFC's */
+	(smc->manfid == MANFID_MEGAHERTZ) &&
+	(smc->cardid == PRODID_MEGAHERTZ_EM3288)) {
+
+	u_char tmp;
+	tmp = readb(smc->base+MEGAHERTZ_ISR);
+	tmp = readb(smc->base+MEGAHERTZ_ISR);
+
+	/* Retrigger interrupt if needed */
+	writeb(tmp, smc->base + MEGAHERTZ_ISR);
+	writeb(tmp, smc->base + MEGAHERTZ_ISR);
     }
-#endif
+
     spin_unlock(&smc->lock);
     return IRQ_RETVAL(handled);
 }
diff --git a/drivers/net/phy/lxt.c b/drivers/net/phy/lxt.c
index dbd0034..29c39ff 100644
--- a/drivers/net/phy/lxt.c
+++ b/drivers/net/phy/lxt.c
@@ -226,6 +226,7 @@ module_exit(lxt_exit);
 static struct mdio_device_id lxt_tbl[] = {
 	{ 0x78100000, 0xfffffff0 },
 	{ 0x001378e0, 0xfffffff0 },
+	{ 0x00137a10, 0xfffffff0 },
 	{ }
 };
 
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index dd9e86c..8d63f69 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -4642,8 +4642,7 @@ static void ql_timer(unsigned long data)
 		return;
 	}
 
-	qdev->timer.expires = jiffies + (5*HZ);
-	add_timer(&qdev->timer);
+	mod_timer(&qdev->timer, jiffies + (5*HZ));
 }
 
 static int __devinit qlge_probe(struct pci_dev *pdev,
@@ -4744,6 +4743,8 @@ static void ql_eeh_close(struct net_device *ndev)
 		netif_stop_queue(ndev);
 	}
 
+	/* Disabling the timer */
+	del_timer_sync(&qdev->timer);
 	if (test_bit(QL_ADAPTER_UP, &qdev->flags))
 		cancel_delayed_work_sync(&qdev->asic_reset_work);
 	cancel_delayed_work_sync(&qdev->mpi_reset_work);
@@ -4839,8 +4840,7 @@ static void qlge_io_resume(struct pci_dev *pdev)
 		netif_err(qdev, ifup, qdev->ndev,
 			  "Device was not running prior to EEH.\n");
 	}
-	qdev->timer.expires = jiffies + (5*HZ);
-	add_timer(&qdev->timer);
+	mod_timer(&qdev->timer, jiffies + (5*HZ));
 	netif_device_attach(ndev);
 }
 
@@ -4902,8 +4902,7 @@ static int qlge_resume(struct pci_dev *pdev)
 			return err;
 	}
 
-	qdev->timer.expires = jiffies + (5*HZ);
-	add_timer(&qdev->timer);
+	mod_timer(&qdev->timer, jiffies + (5*HZ));
 	netif_device_attach(ndev);
 
 	return 0;
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 22371f1..d0af924 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -3129,7 +3129,6 @@ static void tx_intr_handler(struct fifo_info *fifo_data)
 		pkt_cnt++;
 
 		/* Updating the statistics block */
-		nic->dev->stats.tx_bytes += skb->len;
 		swstats->mem_freed += skb->truesize;
 		dev_kfree_skb_irq(skb);
 
@@ -4900,48 +4899,81 @@ static void s2io_updt_stats(struct s2io_nic *sp)
  *  Return value:
  *  pointer to the updated net_device_stats structure.
  */
-
 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
 {
 	struct s2io_nic *sp = netdev_priv(dev);
-	struct config_param *config = &sp->config;
 	struct mac_info *mac_control = &sp->mac_control;
 	struct stat_block *stats = mac_control->stats_info;
-	int i;
+	u64 delta;
 
 	/* Configure Stats for immediate updt */
 	s2io_updt_stats(sp);
 
-	/* Using sp->stats as a staging area, because reset (due to mtu
-	   change, for example) will clear some hardware counters */
-	dev->stats.tx_packets += le32_to_cpu(stats->tmac_frms) -
-		sp->stats.tx_packets;
-	sp->stats.tx_packets = le32_to_cpu(stats->tmac_frms);
-
-	dev->stats.tx_errors += le32_to_cpu(stats->tmac_any_err_frms) -
-		sp->stats.tx_errors;
-	sp->stats.tx_errors = le32_to_cpu(stats->tmac_any_err_frms);
-
-	dev->stats.rx_errors += le64_to_cpu(stats->rmac_drop_frms) -
-		sp->stats.rx_errors;
-	sp->stats.rx_errors = le64_to_cpu(stats->rmac_drop_frms);
-
-	dev->stats.multicast = le32_to_cpu(stats->rmac_vld_mcst_frms) -
-		sp->stats.multicast;
-	sp->stats.multicast = le32_to_cpu(stats->rmac_vld_mcst_frms);
-
-	dev->stats.rx_length_errors = le64_to_cpu(stats->rmac_long_frms) -
-		sp->stats.rx_length_errors;
-	sp->stats.rx_length_errors = le64_to_cpu(stats->rmac_long_frms);
+	/* A device reset will cause the on-adapter statistics to be zero'ed.
+	 * This can be done while running by changing the MTU.  To prevent the
+	 * system from having the stats zero'ed, the driver keeps a copy of the
+	 * last update to the system (which is also zero'ed on reset).  This
+	 * enables the driver to accurately know the delta between the last
+	 * update and the current update.
+	 */
+	delta = ((u64) le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_vld_frms)) - sp->stats.rx_packets;
+	sp->stats.rx_packets += delta;
+	dev->stats.rx_packets += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_frms_oflow) << 32 |
+		le32_to_cpu(stats->tmac_frms)) - sp->stats.tx_packets;
+	sp->stats.tx_packets += delta;
+	dev->stats.tx_packets += delta;
+
+	delta = ((u64) le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
+		le32_to_cpu(stats->rmac_data_octets)) - sp->stats.rx_bytes;
+	sp->stats.rx_bytes += delta;
+	dev->stats.rx_bytes += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
+		le32_to_cpu(stats->tmac_data_octets)) - sp->stats.tx_bytes;
+	sp->stats.tx_bytes += delta;
+	dev->stats.tx_bytes += delta;
+
+	delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_errors;
+	sp->stats.rx_errors += delta;
+	dev->stats.rx_errors += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
+		le32_to_cpu(stats->tmac_any_err_frms)) - sp->stats.tx_errors;
+	sp->stats.tx_errors += delta;
+	dev->stats.tx_errors += delta;
+
+	delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_dropped;
+	sp->stats.rx_dropped += delta;
+	dev->stats.rx_dropped += delta;
+
+	delta = le64_to_cpu(stats->tmac_drop_frms) - sp->stats.tx_dropped;
+	sp->stats.tx_dropped += delta;
+	dev->stats.tx_dropped += delta;
+
+	/* The adapter MAC interprets pause frames as multicast packets, but
+	 * does not pass them up.  This erroneously increases the multicast
+	 * packet count and needs to be deducted when the multicast frame count
+	 * is queried.
+	 */
+	delta = (u64) le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_vld_mcst_frms);
+	delta -= le64_to_cpu(stats->rmac_pause_ctrl_frms);
+	delta -= sp->stats.multicast;
+	sp->stats.multicast += delta;
+	dev->stats.multicast += delta;
 
-	/* collect per-ring rx_packets and rx_bytes */
-	dev->stats.rx_packets = dev->stats.rx_bytes = 0;
-	for (i = 0; i < config->rx_ring_num; i++) {
-		struct ring_info *ring = &mac_control->rings[i];
+	delta = ((u64) le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_usized_frms)) +
+		le64_to_cpu(stats->rmac_long_frms) - sp->stats.rx_length_errors;
+	sp->stats.rx_length_errors += delta;
+	dev->stats.rx_length_errors += delta;
 
-		dev->stats.rx_packets += ring->rx_packets;
-		dev->stats.rx_bytes += ring->rx_bytes;
-	}
+	delta = le64_to_cpu(stats->rmac_fcs_err_frms) - sp->stats.rx_crc_errors;
+	sp->stats.rx_crc_errors += delta;
+	dev->stats.rx_crc_errors += delta;
 
 	return &dev->stats;
 }
@@ -7494,15 +7526,11 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
 		}
 	}
 
-	/* Updating statistics */
-	ring_data->rx_packets++;
 	rxdp->Host_Control = 0;
 	if (sp->rxd_mode == RXD_MODE_1) {
 		int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
 
-		ring_data->rx_bytes += len;
 		skb_put(skb, len);
-
 	} else if (sp->rxd_mode == RXD_MODE_3B) {
 		int get_block = ring_data->rx_curr_get_info.block_index;
 		int get_off = ring_data->rx_curr_get_info.offset;
@@ -7511,7 +7539,6 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
 		unsigned char *buff = skb_push(skb, buf0_len);
 
 		struct buffAdd *ba = &ring_data->ba[get_block][get_off];
-		ring_data->rx_bytes += buf0_len + buf2_len;
 		memcpy(buff, ba->ba_0, buf0_len);
 		skb_put(skb, buf2_len);
 	}
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 47c36e0..5e52c75 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -745,10 +745,6 @@ struct ring_info {
 
 	/* Buffer Address store. */
 	struct buffAdd **ba;
-
-	/* per-Ring statistics */
-	unsigned long rx_packets;
-	unsigned long rx_bytes;
 } ____cacheline_aligned;
 
 /* Fifo specific structure */
diff --git a/drivers/net/sb1250-mac.c b/drivers/net/sb1250-mac.c
index 1f3acc3..79eee30 100644
--- a/drivers/net/sb1250-mac.c
+++ b/drivers/net/sb1250-mac.c
@@ -2671,6 +2671,7 @@ static struct platform_driver sbmac_driver = {
 	.remove = __exit_p(sbmac_remove),
 	.driver = {
 		.name = sbmac_string,
+		.owner  = THIS_MODULE,
 	},
 };
 
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 28d3ee1..dd8a4ad 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -104,10 +104,8 @@ static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg,
 int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen)
 {
 	struct cdc_state	*info = (void *) &dev->data;
-	struct usb_cdc_notification notification;
 	int			master_ifnum;
 	int			retval;
-	int			partial;
 	unsigned		count;
 	__le32			rsp;
 	u32			xid = 0, msg_len, request_id;
@@ -135,17 +133,13 @@ int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen)
 	if (unlikely(retval < 0 || xid == 0))
 		return retval;
 
-	/* Some devices don't respond on the control channel until
-	 * polled on the status channel, so do that first. */
-	retval = usb_interrupt_msg(
-		dev->udev,
-		usb_rcvintpipe(dev->udev, dev->status->desc.bEndpointAddress),
-		&notification, sizeof(notification), &partial,
-		RNDIS_CONTROL_TIMEOUT_MS);
-	if (unlikely(retval < 0))
-		return retval;
+	// FIXME Seems like some devices discard responses when
+	// we time out and cancel our "get response" requests...
+	// so, this is fragile.  Probably need to poll for status.
 
-	/* Poll the control channel; the request probably completed immediately */
+	/* ignore status endpoint, just poll the control channel;
+	 * the request probably completed immediately
+	 */
 	rsp = buf->msg_type | RNDIS_MSG_COMPLETION;
 	for (count = 0; count < 10; count++) {
 		memset(buf, 0, CONTROL_BUFFER_SIZE);
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 44115ee..7eab407 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1293,6 +1293,9 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		goto out;
 	}
 
+	/* netdev_printk() needs this so do it as early as possible */
+	SET_NETDEV_DEV(net, &udev->dev);
+
 	dev = netdev_priv(net);
 	dev->udev = xdev;
 	dev->intf = udev;
@@ -1377,8 +1380,6 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		dev->rx_urb_size = dev->hard_mtu;
 	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
 
-	SET_NETDEV_DEV(net, &udev->dev);
-
 	if ((dev->driver_info->flags & FLAG_WLAN) != 0)
 		SET_NETDEV_DEVTYPE(net, &wlan_type);
 	if ((dev->driver_info->flags & FLAG_WWAN) != 0)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 1edb7a6..bb6b67f 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -415,7 +415,7 @@ static int add_recvbuf_mergeable(struct virtnet_info *vi, gfp_t gfp)
 static bool try_fill_recv(struct virtnet_info *vi, gfp_t gfp)
 {
 	int err;
-	bool oom = false;
+	bool oom;
 
 	do {
 		if (vi->mergeable_rx_bufs)
@@ -425,10 +425,9 @@ static bool try_fill_recv(struct virtnet_info *vi, gfp_t gfp)
 		else
 			err = add_recvbuf_small(vi, gfp);
 
-		if (err < 0) {
-			oom = true;
+		oom = err == -ENOMEM;
+		if (err < 0)
 			break;
-		}
 		++vi->num;
 	} while (err > 0);
 	if (unlikely(vi->num > vi->max))
@@ -563,7 +562,6 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct virtnet_info *vi = netdev_priv(dev);
 	int capacity;
 
-again:
 	/* Free up any pending old buffers before queueing new ones. */
 	free_old_xmit_skbs(vi);
 
@@ -572,14 +570,20 @@ again:
 
 	/* This can happen with OOM and indirect buffers. */
 	if (unlikely(capacity < 0)) {
-		netif_stop_queue(dev);
-		dev_warn(&dev->dev, "Unexpected full queue\n");
-		if (unlikely(!virtqueue_enable_cb(vi->svq))) {
-			virtqueue_disable_cb(vi->svq);
-			netif_start_queue(dev);
-			goto again;
+		if (net_ratelimit()) {
+			if (likely(capacity == -ENOMEM)) {
+				dev_warn(&dev->dev,
+					 "TX queue failure: out of memory\n");
+			} else {
+				dev->stats.tx_fifo_errors++;
+				dev_warn(&dev->dev,
+					 "Unexpected TX queue failure: %d\n",
+					 capacity);
+			}
 		}
-		return NETDEV_TX_BUSY;
+		dev->stats.tx_dropped++;
+		kfree_skb(skb);
+		return NETDEV_TX_OK;
 	}
 	virtqueue_kick(vi->svq);
 
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index 45c5dc2..ed17865 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -2262,7 +2262,8 @@ start:
 		vxge_debug_init(VXGE_ERR,
 			"%s: memory allocation failed",
 			VXGE_DRIVER_NAME);
-		return  -ENOMEM;
+		ret = -ENOMEM;
+		goto alloc_entries_failed;
 	}
 
 	vdev->vxge_entries =
@@ -2271,8 +2272,8 @@ start:
 	if (!vdev->vxge_entries) {
 		vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
 			VXGE_DRIVER_NAME);
-		kfree(vdev->entries);
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto alloc_vxge_entries_failed;
 	}
 
 	for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
@@ -2303,22 +2304,32 @@ start:
 		vxge_debug_init(VXGE_ERR,
 			"%s: MSI-X enable failed for %d vectors, ret: %d",
 			VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
+		if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
+			ret = -ENODEV;
+			goto enable_msix_failed;
+		}
+
 		kfree(vdev->entries);
 		kfree(vdev->vxge_entries);
 		vdev->entries = NULL;
 		vdev->vxge_entries = NULL;
-
-		if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3))
-			return -ENODEV;
 		/* Try with less no of vector by reducing no of vpaths count */
 		temp = (ret - 1)/2;
 		vxge_close_vpaths(vdev, temp);
 		vdev->no_of_vpath = temp;
 		goto start;
-	} else if (ret < 0)
-		return -ENODEV;
-
+	} else if (ret < 0) {
+		ret = -ENODEV;
+		goto enable_msix_failed;
+	}
 	return 0;
+
+enable_msix_failed:
+	kfree(vdev->vxge_entries);
+alloc_vxge_entries_failed:
+	kfree(vdev->entries);
+alloc_entries_failed:
+	return ret;
 }
 
 static int vxge_enable_msix(struct vxgedev *vdev)
@@ -4515,9 +4526,9 @@ vxge_starter(void)
 	char version[32];
 	snprintf(version, 32, "%s", DRV_VERSION);
 
-	printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
+	printk(KERN_INFO "%s: Copyright(c) 2002-2009 Neterion Inc\n",
 		VXGE_DRIVER_NAME);
-	printk(KERN_CRIT "%s: Driver version: %s\n",
+	printk(KERN_INFO "%s: Driver version: %s\n",
 			VXGE_DRIVER_NAME, version);
 
 	verify_bandwidth();
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 4c218e9..107af9e 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -98,7 +98,8 @@ static void tx_poll_start(struct vhost_net *net, struct socket *sock)
 static void handle_tx(struct vhost_net *net)
 {
 	struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_TX];
-	unsigned head, out, in, s;
+	unsigned out, in, s;
+	int head;
 	struct msghdr msg = {
 		.msg_name = NULL,
 		.msg_namelen = 0,
@@ -135,6 +136,9 @@ static void handle_tx(struct vhost_net *net)
 					 ARRAY_SIZE(vq->iov),
 					 &out, &in,
 					 NULL, NULL);
+		/* On error, stop handling until the next kick. */
+		if (unlikely(head < 0))
+			break;
 		/* Nothing new?  Wait for eventfd to tell us they refilled. */
 		if (head == vq->num) {
 			wmem = atomic_read(&sock->sk->sk_wmem_alloc);
@@ -192,7 +196,8 @@ static void handle_tx(struct vhost_net *net)
 static void handle_rx(struct vhost_net *net)
 {
 	struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_RX];
-	unsigned head, out, in, log, s;
+	unsigned out, in, log, s;
+	int head;
 	struct vhost_log *vq_log;
 	struct msghdr msg = {
 		.msg_name = NULL,
@@ -228,6 +233,9 @@ static void handle_rx(struct vhost_net *net)
 					 ARRAY_SIZE(vq->iov),
 					 &out, &in,
 					 vq_log, &log);
+		/* On error, stop handling until the next kick. */
+		if (unlikely(head < 0))
+			break;
 		/* OK, now we need to know about added descriptors. */
 		if (head == vq->num) {
 			if (unlikely(vhost_enable_notify(vq))) {
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 04344b7..248ed2d 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -736,12 +736,12 @@ static int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
 	mem = rcu_dereference(dev->memory);
 	while ((u64)len > s) {
 		u64 size;
-		if (ret >= iov_size) {
+		if (unlikely(ret >= iov_size)) {
 			ret = -ENOBUFS;
 			break;
 		}
 		reg = find_region(mem, addr, len);
-		if (!reg) {
+		if (unlikely(!reg)) {
 			ret = -EFAULT;
 			break;
 		}
@@ -780,18 +780,18 @@ static unsigned next_desc(struct vring_desc *desc)
 	return next;
 }
 
-static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
-			     struct iovec iov[], unsigned int iov_size,
-			     unsigned int *out_num, unsigned int *in_num,
-			     struct vhost_log *log, unsigned int *log_num,
-			     struct vring_desc *indirect)
+static int get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
+			struct iovec iov[], unsigned int iov_size,
+			unsigned int *out_num, unsigned int *in_num,
+			struct vhost_log *log, unsigned int *log_num,
+			struct vring_desc *indirect)
 {
 	struct vring_desc desc;
 	unsigned int i = 0, count, found = 0;
 	int ret;
 
 	/* Sanity check */
-	if (indirect->len % sizeof desc) {
+	if (unlikely(indirect->len % sizeof desc)) {
 		vq_err(vq, "Invalid length in indirect descriptor: "
 		       "len 0x%llx not multiple of 0x%zx\n",
 		       (unsigned long long)indirect->len,
@@ -801,7 +801,7 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 
 	ret = translate_desc(dev, indirect->addr, indirect->len, vq->indirect,
 			     ARRAY_SIZE(vq->indirect));
-	if (ret < 0) {
+	if (unlikely(ret < 0)) {
 		vq_err(vq, "Translation failure %d in indirect.\n", ret);
 		return ret;
 	}
@@ -813,7 +813,7 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 	count = indirect->len / sizeof desc;
 	/* Buffers are chained via a 16 bit next field, so
 	 * we can have at most 2^16 of these. */
-	if (count > USHRT_MAX + 1) {
+	if (unlikely(count > USHRT_MAX + 1)) {
 		vq_err(vq, "Indirect buffer length too big: %d\n",
 		       indirect->len);
 		return -E2BIG;
@@ -821,19 +821,19 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 
 	do {
 		unsigned iov_count = *in_num + *out_num;
-		if (++found > count) {
+		if (unlikely(++found > count)) {
 			vq_err(vq, "Loop detected: last one at %u "
 			       "indirect size %u\n",
 			       i, count);
 			return -EINVAL;
 		}
-		if (memcpy_fromiovec((unsigned char *)&desc, vq->indirect,
-				     sizeof desc)) {
+		if (unlikely(memcpy_fromiovec((unsigned char *)&desc, vq->indirect,
+					      sizeof desc))) {
 			vq_err(vq, "Failed indirect descriptor: idx %d, %zx\n",
 			       i, (size_t)indirect->addr + i * sizeof desc);
 			return -EINVAL;
 		}
-		if (desc.flags & VRING_DESC_F_INDIRECT) {
+		if (unlikely(desc.flags & VRING_DESC_F_INDIRECT)) {
 			vq_err(vq, "Nested indirect descriptor: idx %d, %zx\n",
 			       i, (size_t)indirect->addr + i * sizeof desc);
 			return -EINVAL;
@@ -841,7 +841,7 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 
 		ret = translate_desc(dev, desc.addr, desc.len, iov + iov_count,
 				     iov_size - iov_count);
-		if (ret < 0) {
+		if (unlikely(ret < 0)) {
 			vq_err(vq, "Translation failure %d indirect idx %d\n",
 			       ret, i);
 			return ret;
@@ -857,7 +857,7 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 		} else {
 			/* If it's an output descriptor, they're all supposed
 			 * to come before any input descriptors. */
-			if (*in_num) {
+			if (unlikely(*in_num)) {
 				vq_err(vq, "Indirect descriptor "
 				       "has out after in: idx %d\n", i);
 				return -EINVAL;
@@ -873,12 +873,13 @@ static unsigned get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
  * number of output then some number of input descriptors, it's actually two
  * iovecs, but we pack them into one and note how many of each there were.
  *
- * This function returns the descriptor number found, or vq->num (which
- * is never a valid descriptor number) if none was found. */
-unsigned vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
-			   struct iovec iov[], unsigned int iov_size,
-			   unsigned int *out_num, unsigned int *in_num,
-			   struct vhost_log *log, unsigned int *log_num)
+ * This function returns the descriptor number found, or vq->num (which is
+ * never a valid descriptor number) if none was found.  A negative code is
+ * returned on error. */
+int vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
+		      struct iovec iov[], unsigned int iov_size,
+		      unsigned int *out_num, unsigned int *in_num,
+		      struct vhost_log *log, unsigned int *log_num)
 {
 	struct vring_desc desc;
 	unsigned int i, head, found = 0;
@@ -887,16 +888,16 @@ unsigned vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 
 	/* Check it isn't doing very strange things with descriptor numbers. */
 	last_avail_idx = vq->last_avail_idx;
-	if (get_user(vq->avail_idx, &vq->avail->idx)) {
+	if (unlikely(get_user(vq->avail_idx, &vq->avail->idx))) {
 		vq_err(vq, "Failed to access avail idx at %p\n",
 		       &vq->avail->idx);
-		return vq->num;
+		return -EFAULT;
 	}
 
-	if ((u16)(vq->avail_idx - last_avail_idx) > vq->num) {
+	if (unlikely((u16)(vq->avail_idx - last_avail_idx) > vq->num)) {
 		vq_err(vq, "Guest moved used index from %u to %u",
 		       last_avail_idx, vq->avail_idx);
-		return vq->num;
+		return -EFAULT;
 	}
 
 	/* If there's nothing new since last we looked, return invalid. */
@@ -908,18 +909,19 @@ unsigned vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 
 	/* Grab the next descriptor number they're advertising, and increment
 	 * the index we've seen. */
-	if (get_user(head, &vq->avail->ring[last_avail_idx % vq->num])) {
+	if (unlikely(get_user(head,
+			      &vq->avail->ring[last_avail_idx % vq->num]))) {
 		vq_err(vq, "Failed to read head: idx %d address %p\n",
 		       last_avail_idx,
 		       &vq->avail->ring[last_avail_idx % vq->num]);
-		return vq->num;
+		return -EFAULT;
 	}
 
 	/* If their number is silly, that's an error. */
-	if (head >= vq->num) {
+	if (unlikely(head >= vq->num)) {
 		vq_err(vq, "Guest says index %u > %u is available",
 		       head, vq->num);
-		return vq->num;
+		return -EINVAL;
 	}
 
 	/* When we start there are none of either input nor output. */
@@ -930,41 +932,41 @@ unsigned vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 	i = head;
 	do {
 		unsigned iov_count = *in_num + *out_num;
-		if (i >= vq->num) {
+		if (unlikely(i >= vq->num)) {
 			vq_err(vq, "Desc index is %u > %u, head = %u",
 			       i, vq->num, head);
-			return vq->num;
+			return -EINVAL;
 		}
-		if (++found > vq->num) {
+		if (unlikely(++found > vq->num)) {
 			vq_err(vq, "Loop detected: last one at %u "
 			       "vq size %u head %u\n",
 			       i, vq->num, head);
-			return vq->num;
+			return -EINVAL;
 		}
 		ret = copy_from_user(&desc, vq->desc + i, sizeof desc);
-		if (ret) {
+		if (unlikely(ret)) {
 			vq_err(vq, "Failed to get descriptor: idx %d addr %p\n",
 			       i, vq->desc + i);
-			return vq->num;
+			return -EFAULT;
 		}
 		if (desc.flags & VRING_DESC_F_INDIRECT) {
 			ret = get_indirect(dev, vq, iov, iov_size,
 					   out_num, in_num,
 					   log, log_num, &desc);
-			if (ret < 0) {
+			if (unlikely(ret < 0)) {
 				vq_err(vq, "Failure detected "
 				       "in indirect descriptor at idx %d\n", i);
-				return vq->num;
+				return ret;
 			}
 			continue;
 		}
 
 		ret = translate_desc(dev, desc.addr, desc.len, iov + iov_count,
 				     iov_size - iov_count);
-		if (ret < 0) {
+		if (unlikely(ret < 0)) {
 			vq_err(vq, "Translation failure %d descriptor idx %d\n",
 			       ret, i);
-			return vq->num;
+			return ret;
 		}
 		if (desc.flags & VRING_DESC_F_WRITE) {
 			/* If this is an input descriptor,
@@ -978,10 +980,10 @@ unsigned vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
 		} else {
 			/* If it's an output descriptor, they're all supposed
 			 * to come before any input descriptors. */
-			if (*in_num) {
+			if (unlikely(*in_num)) {
 				vq_err(vq, "Descriptor has out after in: "
 				       "idx %d\n", i);
-				return vq->num;
+				return -EINVAL;
 			}
 			*out_num += ret;
 		}
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 44591ba..11ee13d 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -120,10 +120,10 @@ long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, unsigned long arg);
 int vhost_vq_access_ok(struct vhost_virtqueue *vq);
 int vhost_log_access_ok(struct vhost_dev *);
 
-unsigned vhost_get_vq_desc(struct vhost_dev *, struct vhost_virtqueue *,
-			   struct iovec iov[], unsigned int iov_count,
-			   unsigned int *out_num, unsigned int *in_num,
-			   struct vhost_log *log, unsigned int *log_num);
+int vhost_get_vq_desc(struct vhost_dev *, struct vhost_virtqueue *,
+		      struct iovec iov[], unsigned int iov_count,
+		      unsigned int *out_num, unsigned int *in_num,
+		      struct vhost_log *log, unsigned int *log_num);
 void vhost_discard_vq_desc(struct vhost_virtqueue *);
 
 int vhost_add_used(struct vhost_virtqueue *, unsigned int head, int len);