Merge branch 'master'

28 files changed, 64 insertions, 81 deletions

diff --git a/include/asm-arm/arch-iop3xx/iop331-irqs.h b/include/asm-arm/arch-iop3xx/iop331-irqs.h
index 8ff73d487222..7135ad7e335e 100644
--- a/include/asm-arm/arch-iop3xx/iop331-irqs.h
+++ b/include/asm-arm/arch-iop3xx/iop331-irqs.h
@@ -91,7 +91,6 @@
 #define NR_IRQS			NR_IOP331_IRQS
 
 
-#if defined(CONFIG_ARCH_IQ80331)
 /*
  * Interrupts available on the IQ80331 board
  */
@@ -111,7 +110,6 @@
 #define	IRQ_IQ80331_INTC	IRQ_IOP331_XINT2
 #define	IRQ_IQ80331_INTD	IRQ_IOP331_XINT3
 
-#elif defined(CONFIG_MACH_IQ80332)
 /*
  * Interrupts available on the IQ80332 board
  */
@@ -131,6 +129,4 @@
 #define	IRQ_IQ80332_INTC	IRQ_IOP331_XINT2
 #define	IRQ_IQ80332_INTD	IRQ_IOP331_XINT3
 
-#endif
-
 #endif // _IOP331_IRQ_H_
diff --git a/include/asm-m68k/oplib.h b/include/asm-m68k/oplib.h
index c3594f473ef7..06caa2d08451 100644
--- a/include/asm-m68k/oplib.h
+++ b/include/asm-m68k/oplib.h
@@ -244,11 +244,6 @@ extern void prom_getstring(int node, char *prop, char *buf, int bufsize);
 /* Does the passed node have the given "name"? YES=1 NO=0 */
 extern int prom_nodematch(int thisnode, char *name);
 
-/* Puts in buffer a prom name in the form name@x,y or name (x for which_io
- * and y for first regs phys address
- */
-extern int prom_getname(int node, char *buf, int buflen);
-
 /* Search all siblings starting at the passed node for "name" matching
  * the given string.  Returns the node on success, zero on failure.
  */
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 36a3a85d611a..16040048cd1b 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -128,8 +128,13 @@ extern void account_system_vtime(struct task_struct *);
 
 #define nop() __asm__ __volatile__ ("nop")
 
-#define xchg(ptr,x) \
-  ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(void *)(ptr),sizeof(*(ptr))))
+#define xchg(ptr,x)							  \
+({									  \
+	__typeof__(*(ptr)) __ret;					  \
+	__ret = (__typeof__(*(ptr)))					  \
+		__xchg((unsigned long)(x), (void *)(ptr),sizeof(*(ptr))); \
+	__ret;								  \
+})
 
 static inline unsigned long __xchg(unsigned long x, void * ptr, int size)
 {
diff --git a/include/asm-s390/timex.h b/include/asm-s390/timex.h
index 4848057dafe4..5d0332a4c2bd 100644
--- a/include/asm-s390/timex.h
+++ b/include/asm-s390/timex.h
@@ -19,7 +19,7 @@ static inline cycles_t get_cycles(void)
 {
 	cycles_t cycles;
 
-	__asm__("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
+	__asm__ __volatile__ ("stck 0(%1)" : "=m" (cycles) : "a" (&cycles) : "cc");
 	return cycles >> 2;
 }
 
@@ -27,7 +27,7 @@ static inline unsigned long long get_clock (void)
 {
 	unsigned long long clk;
 
-	__asm__("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
+	__asm__ __volatile__ ("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
 	return clk;
 }
 
diff --git a/include/asm-sparc/oplib.h b/include/asm-sparc/oplib.h
index f283f8aaf6a9..91691e52c058 100644
--- a/include/asm-sparc/oplib.h
+++ b/include/asm-sparc/oplib.h
@@ -267,11 +267,6 @@ extern void prom_getstring(int node, char *prop, char *buf, int bufsize);
 /* Does the passed node have the given "name"? YES=1 NO=0 */
 extern int prom_nodematch(int thisnode, char *name);
 
-/* Puts in buffer a prom name in the form name@x,y or name (x for which_io 
- * and y for first regs phys address
- */
-extern int prom_getname(int node, char *buf, int buflen);
-
 /* Search all siblings starting at the passed node for "name" matching
  * the given string.  Returns the node on success, zero on failure.
  */
diff --git a/include/asm-sparc/signal.h b/include/asm-sparc/signal.h
index 0ae5084c427b..d03a21c97abb 100644
--- a/include/asm-sparc/signal.h
+++ b/include/asm-sparc/signal.h
@@ -168,7 +168,7 @@ struct sigstack {
  * statically allocated data.. which is NOT GOOD.
  *
  */
-#define SA_STATIC_ALLOC		0x80
+#define SA_STATIC_ALLOC		0x8000
 #endif
 
 #include <asm-generic/signal.h>
diff --git a/include/asm-sparc64/openprom.h b/include/asm-sparc64/openprom.h
index b4959d2b0d99..e01b80559c93 100644
--- a/include/asm-sparc64/openprom.h
+++ b/include/asm-sparc64/openprom.h
@@ -175,7 +175,7 @@ struct linux_nodeops {
 };
 
 /* More fun PROM structures for device probing. */
-#define PROMREG_MAX     16
+#define PROMREG_MAX     24
 #define PROMVADDR_MAX   16
 #define PROMINTR_MAX    15
 
diff --git a/include/asm-sparc64/oplib.h b/include/asm-sparc64/oplib.h
index a68b0bb05958..6a0da3b1695c 100644
--- a/include/asm-sparc64/oplib.h
+++ b/include/asm-sparc64/oplib.h
@@ -287,11 +287,6 @@ extern void prom_getstring(int node, const char *prop, char *buf, int bufsize);
 /* Does the passed node have the given "name"? YES=1 NO=0 */
 extern int prom_nodematch(int thisnode, const char *name);
 
-/* Puts in buffer a prom name in the form name@x,y or name (x for which_io 
- * and y for first regs phys address
- */
-extern int prom_getname(int node, char *buf, int buflen);
-
 /* Search all siblings starting at the passed node for "name" matching
  * the given string.  Returns the node on success, zero on failure.
  */
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index 03f5bc9b6bec..1ba19eb34ce3 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -339,7 +339,7 @@ static inline pgprot_t pgprot_noncached(pgprot_t prot)
 	"	.section	.sun4v_2insn_patch, \"ax\"\n"
 	"	.word		661b\n"
 	"	andn		%0, %4, %0\n"
-	"	or		%0, %3, %0\n"
+	"	or		%0, %5, %0\n"
 	"	.previous\n"
 	: "=r" (val)
 	: "0" (val), "i" (_PAGE_CP_4U | _PAGE_CV_4U), "i" (_PAGE_E_4U),
diff --git a/include/asm-sparc64/sfp-machine.h b/include/asm-sparc64/sfp-machine.h
index 5015bb8d6c32..89d42431efb5 100644
--- a/include/asm-sparc64/sfp-machine.h
+++ b/include/asm-sparc64/sfp-machine.h
@@ -34,7 +34,7 @@
 #define _FP_MUL_MEAT_D(R,X,Y)					\
   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
 #define _FP_MUL_MEAT_Q(R,X,Y)					\
-  _FP_MUL_MEAT_2_wide_3mul(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
 
 #define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
 #define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)
diff --git a/include/asm-x86_64/calgary.h b/include/asm-x86_64/calgary.h
index fbfb50136edb..4e3919524240 100644
--- a/include/asm-x86_64/calgary.h
+++ b/include/asm-x86_64/calgary.h
@@ -60,9 +60,4 @@ static inline int calgary_iommu_init(void) { return 1; }
 static inline void detect_calgary(void) { return; }
 #endif
 
-static inline unsigned int bus_to_phb(unsigned char busno)
-{
-	return ((busno % 15 == 0) ? 0 : busno / 2 + 1);
-}
-
 #endif /* _ASM_X86_64_CALGARY_H */
diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index f7bf875aae40..10f346165cab 100644
--- a/include/asm-x86_64/page.h
+++ b/include/asm-x86_64/page.h
@@ -19,7 +19,7 @@
 #define EXCEPTION_STACK_ORDER 0
 #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
 
-#define DEBUG_STACK_ORDER EXCEPTION_STACK_ORDER
+#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
 #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
 
 #define IRQSTACK_ORDER 2
diff --git a/include/asm-x86_64/swiotlb.h b/include/asm-x86_64/swiotlb.h
index 5f9a01805821..ba94ab3d2673 100644
--- a/include/asm-x86_64/swiotlb.h
+++ b/include/asm-x86_64/swiotlb.h
@@ -42,6 +42,8 @@ extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
 extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
 extern void swiotlb_init(void);
 
+extern int swiotlb_force;
+
 #ifdef CONFIG_SWIOTLB
 extern int swiotlb;
 #else
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 44a11f1ccaf2..8fb344a9abd8 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -48,7 +48,6 @@ static inline void unregister_cpu_notifier(struct notifier_block *nb)
 {
 }
 #endif
-extern int current_in_cpu_hotplug(void);
 
 int cpu_up(unsigned int cpu);
 
@@ -61,10 +60,6 @@ static inline int register_cpu_notifier(struct notifier_block *nb)
 static inline void unregister_cpu_notifier(struct notifier_block *nb)
 {
 }
-static inline int current_in_cpu_hotplug(void)
-{
-	return 0;
-}
 
 #endif /* CONFIG_SMP */
 extern struct sysdev_class cpu_sysdev_class;
@@ -73,7 +68,6 @@ extern struct sysdev_class cpu_sysdev_class;
 /* Stop CPUs going up and down. */
 extern void lock_cpu_hotplug(void);
 extern void unlock_cpu_hotplug(void);
-extern int lock_cpu_hotplug_interruptible(void);
 #define hotcpu_notifier(fn, pri) {				\
 	static struct notifier_block fn##_nb =			\
 		{ .notifier_call = fn, .priority = pri };	\
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 35e137636b0b..4ea39fee99c7 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -172,9 +172,6 @@ extern int __cpufreq_driver_target(struct cpufreq_policy *policy,
 				   unsigned int relation);
 
 
-/* pass an event to the cpufreq governor */
-int cpufreq_governor(unsigned int cpu, unsigned int event);
-
 int cpufreq_register_governor(struct cpufreq_governor *governor);
 void cpufreq_unregister_governor(struct cpufreq_governor *governor);
 
diff --git a/include/linux/futex.h b/include/linux/futex.h
index 34c3a215f2cd..d097b5b72bc6 100644
--- a/include/linux/futex.h
+++ b/include/linux/futex.h
@@ -96,7 +96,8 @@ struct robust_list_head {
 long do_futex(u32 __user *uaddr, int op, u32 val, unsigned long timeout,
 	      u32 __user *uaddr2, u32 val2, u32 val3);
 
-extern int handle_futex_death(u32 __user *uaddr, struct task_struct *curr);
+extern int
+handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi);
 
 #ifdef CONFIG_FUTEX
 extern void exit_robust_list(struct task_struct *curr);
diff --git a/include/linux/ide.h b/include/linux/ide.h
index dc7abef10965..99620451d958 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -571,6 +571,7 @@ typedef struct ide_drive_s {
 	u8	waiting_for_dma;	/* dma currently in progress */
 	u8	unmask;			/* okay to unmask other irqs */
 	u8	bswap;			/* byte swap data */
+	u8	noflush;		/* don't attempt flushes */
 	u8	dsc_overlap;		/* DSC overlap */
 	u8	nice1;			/* give potential excess bandwidth */
 
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 6cc497a2b6da..66c3100c2b94 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -265,12 +265,14 @@ enum {
 
 	/* ata_eh_info->flags */
 	ATA_EHI_HOTPLUGGED	= (1 << 0),  /* could have been hotplugged */
-	ATA_EHI_RESUME_LINK	= (1 << 1),  /* need to resume link */
+	ATA_EHI_RESUME_LINK	= (1 << 1),  /* resume link (reset modifier) */
 	ATA_EHI_NO_AUTOPSY	= (1 << 2),  /* no autopsy */
 	ATA_EHI_QUIET		= (1 << 3),  /* be quiet */
 
 	ATA_EHI_DID_RESET	= (1 << 16), /* already reset this port */
 
+	ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,
+
 	/* max repeat if error condition is still set after ->error_handler */
 	ATA_EH_MAX_REPEAT	= 5,
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 76cc099c8580..75f02d8c6ed3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -924,10 +924,10 @@ static inline void netif_tx_lock_bh(struct net_device *dev)
 
 static inline int netif_tx_trylock(struct net_device *dev)
 {
-	int err = spin_trylock(&dev->_xmit_lock);
-	if (!err)
+	int ok = spin_trylock(&dev->_xmit_lock);
+	if (likely(ok))
 		dev->xmit_lock_owner = smp_processor_id();
-	return err;
+	return ok;
 }
 
 static inline void netif_tx_unlock(struct net_device *dev)
diff --git a/include/linux/netfilter_bridge.h b/include/linux/netfilter_bridge.h
index 87764022cc67..31f02ba036ce 100644
--- a/include/linux/netfilter_bridge.h
+++ b/include/linux/netfilter_bridge.h
@@ -79,6 +79,8 @@ struct bridge_skb_cb {
 		__u32 ipv4;
 	} daddr;
 };
+
+extern int brnf_deferred_hooks;
 #endif /* CONFIG_BRIDGE_NETFILTER */
 
 #endif /* __KERNEL__ */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 0bf31b83578c..4307e764ef0a 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1066,9 +1066,8 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
 		kfree_skb(skb);
 }
 
-#ifndef CONFIG_HAVE_ARCH_DEV_ALLOC_SKB
 /**
- *	__dev_alloc_skb - allocate an skbuff for sending
+ *	__dev_alloc_skb - allocate an skbuff for receiving
  *	@length: length to allocate
  *	@gfp_mask: get_free_pages mask, passed to alloc_skb
  *
@@ -1087,12 +1086,9 @@ static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
 		skb_reserve(skb, NET_SKB_PAD);
 	return skb;
 }
-#else
-extern struct sk_buff *__dev_alloc_skb(unsigned int length, int gfp_mask);
-#endif
 
 /**
- *	dev_alloc_skb - allocate an skbuff for sending
+ *	dev_alloc_skb - allocate an skbuff for receiving
  *	@length: length to allocate
  *
  *	Allocate a new &sk_buff and assign it a usage count of one. The
diff --git a/include/net/netdma.h b/include/net/netdma.h
index 19760eb131aa..ceae5ee85c04 100644
--- a/include/net/netdma.h
+++ b/include/net/netdma.h
@@ -37,7 +37,7 @@ static inline struct dma_chan *get_softnet_dma(void)
 }
 
 int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
-		const struct sk_buff *skb, int offset, struct iovec *to,
+		struct sk_buff *skb, int offset, struct iovec *to,
 		size_t len, struct dma_pinned_list *pinned_list);
 
 #endif /* CONFIG_NET_DMA */
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 1925c65e617b..f6afee73235d 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -169,23 +169,17 @@ psched_tod_diff(int delta_sec, int bound)
 
 #define PSCHED_TADD2(tv, delta, tv_res) \
 ({ \
-	   int __delta = (delta); \
-	   (tv_res) = (tv); \
-	   while(__delta >= USEC_PER_SEC){ \
-		 (tv_res).tv_sec++; \
-		 __delta -= USEC_PER_SEC; \
-	   } \
+	   int __delta = (tv).tv_usec + (delta); \
+	   (tv_res).tv_sec = (tv).tv_sec; \
+	   while (__delta >= USEC_PER_SEC) { (tv_res).tv_sec++; __delta -= USEC_PER_SEC; } \
 	   (tv_res).tv_usec = __delta; \
 })
 
 #define PSCHED_TADD(tv, delta) \
 ({ \
-	   int __delta = (delta); \
-	   while(__delta >= USEC_PER_SEC){ \
-		 (tv).tv_sec++; \
-		 __delta -= USEC_PER_SEC; \
-	   } \
-	   (tv).tv_usec = __delta; \
+	   (tv).tv_usec += (delta); \
+	   while ((tv).tv_usec >= USEC_PER_SEC) { (tv).tv_sec++; \
+		 (tv).tv_usec -= USEC_PER_SEC; } \
 })
 
 /* Set/check that time is in the "past perfect";
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 5f69158c1006..e5aa7ff1f5b5 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -445,6 +445,7 @@ typedef struct sctp_sender_hb_info {
 	struct sctp_paramhdr param_hdr;
 	union sctp_addr daddr;
 	unsigned long sent_at;
+	__u64 hb_nonce;
 } __attribute__((packed)) sctp_sender_hb_info_t;
 
 /*
@@ -730,13 +731,10 @@ void sctp_init_addrs(struct sctp_chunk *, union sctp_addr *,
 const union sctp_addr *sctp_source(const struct sctp_chunk *chunk);
 
 /* This is a structure for holding either an IPv6 or an IPv4 address.  */
-/* sin_family -- AF_INET or AF_INET6
- * sin_port -- ordinary port number
- * sin_addr -- cast to either (struct in_addr) or (struct in6_addr)
- */
 struct sctp_sockaddr_entry {
 	struct list_head list;
 	union sctp_addr a;
+	__u8 use_as_src;
 };
 
 typedef struct sctp_chunk *(sctp_packet_phandler_t)(struct sctp_association *);
@@ -984,6 +982,9 @@ struct sctp_transport {
 		 */
 		char cacc_saw_newack;
 	} cacc;
+
+	/* 64-bit random number sent with heartbeat. */
+	__u64 hb_nonce;
 };
 
 struct sctp_transport *sctp_transport_new(const union sctp_addr *,
@@ -1138,7 +1139,7 @@ int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
 			sctp_scope_t scope, gfp_t gfp,
 			int flags);
 int sctp_add_bind_addr(struct sctp_bind_addr *, union sctp_addr *,
-		       gfp_t gfp);
+		       __u8 use_as_src, gfp_t gfp);
 int sctp_del_bind_addr(struct sctp_bind_addr *, union sctp_addr *);
 int sctp_bind_addr_match(struct sctp_bind_addr *, const union sctp_addr *,
 			 struct sctp_sock *);
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index 8a6bef6f91eb..1b7aae6cdd82 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -560,9 +560,18 @@ struct sctp_paddrinfo {
 } __attribute__((packed, aligned(4)));
 
 /* Peer addresses's state. */
+/* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x]
+ * calls.
+ * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters.
+ *              Not yet confirmed by a heartbeat and not available for data
+ *		transfers.
+ * ACTIVE : Peer address confirmed, active and available for data transfers.
+ * INACTIVE: Peer address inactive and not available for data transfers.
+ */
 enum sctp_spinfo_state {
 	SCTP_INACTIVE,
 	SCTP_ACTIVE,
+	SCTP_UNCONFIRMED,
 	SCTP_UNKNOWN = 0xffff  /* Value used for transport state unknown */
 };
 
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 5ff77558013b..585d28e960dd 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -75,6 +75,7 @@
 #define IB_MGMT_METHOD_TRAP_REPRESS		0x07
 
 #define IB_MGMT_METHOD_RESP			0x80
+#define IB_BM_ATTR_MOD_RESP			cpu_to_be32(1)
 
 #define IB_MGMT_MAX_METHODS			128
 
@@ -247,6 +248,12 @@ struct ib_mad_send_buf {
 };
 
 /**
+ * ib_response_mad - Returns if the specified MAD has been generated in
+ *   response to a sent request or trap.
+ */
+int ib_response_mad(struct ib_mad *mad);
+
+/**
  * ib_get_rmpp_resptime - Returns the RMPP response time.
  * @rmpp_hdr: An RMPP header.
  */
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 371f70d9aa92..58e6444eebee 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -58,9 +58,7 @@ struct scsi_cmnd {
 	int timeout_per_command;
 
 	unsigned char cmd_len;
-	unsigned char old_cmd_len;
 	enum dma_data_direction sc_data_direction;
-	enum dma_data_direction sc_old_data_direction;
 
 	/* These elements define the operation we are about to perform */
 #define MAX_COMMAND_SIZE	16
@@ -71,18 +69,11 @@ struct scsi_cmnd {
 	void *request_buffer;		/* Actual requested buffer */
 
 	/* These elements define the operation we ultimately want to perform */
-	unsigned char data_cmnd[MAX_COMMAND_SIZE];
-	unsigned short old_use_sg;	/* We save  use_sg here when requesting
-					 * sense info */
 	unsigned short use_sg;	/* Number of pieces of scatter-gather */
 	unsigned short sglist_len;	/* size of malloc'd scatter-gather list */
-	unsigned bufflen;	/* Size of data buffer */
-	void *buffer;		/* Data buffer */
 
 	unsigned underflow;	/* Return error if less than
 				   this amount is transferred */
-	unsigned old_underflow;	/* save underflow here when reusing the
-				 * command for error handling */
 
 	unsigned transfersize;	/* How much we are guaranteed to
 				   transfer with each SCSI transfer
diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
index e3c503cd175e..6cc2314098cf 100644
--- a/include/scsi/scsi_transport_sas.h
+++ b/include/scsi/scsi_transport_sas.h
@@ -106,6 +106,7 @@ struct sas_end_device {
 
 struct sas_expander_device {
 	int    level;
+	int    next_port_id;
 
 	#define SAS_EXPANDER_VENDOR_ID_LEN	8
 	char   vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
@@ -127,8 +128,10 @@ struct sas_expander_device {
 struct sas_port {
 	struct device		dev;
 
-	u8			port_identifier;
+	int			port_identifier;
 	int			num_phys;
+	/* port flags */
+	unsigned int		is_backlink:1;
 
 	/* the other end of the link */
 	struct sas_rphy		*rphy;
@@ -168,11 +171,13 @@ extern void sas_rphy_delete(struct sas_rphy *);
 extern int scsi_is_sas_rphy(const struct device *);
 
 struct sas_port *sas_port_alloc(struct device *, int);
+struct sas_port *sas_port_alloc_num(struct device *);
 int sas_port_add(struct sas_port *);
 void sas_port_free(struct sas_port *);
 void sas_port_delete(struct sas_port *);
 void sas_port_add_phy(struct sas_port *, struct sas_phy *);
 void sas_port_delete_phy(struct sas_port *, struct sas_phy *);
+void sas_port_mark_backlink(struct sas_port *);
 int scsi_is_sas_port(const struct device *);
 
 extern struct scsi_transport_template *