Merge branch 'master' into upstream

69 files changed, 1277 insertions, 2494 deletions

diff --git a/drivers/Kconfig b/drivers/Kconfig
index 5c91d6afb11..aeb5ab2391e 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -68,8 +68,6 @@ source "drivers/leds/Kconfig"
 
 source "drivers/infiniband/Kconfig"
 
-source "drivers/sn/Kconfig"
-
 source "drivers/edac/Kconfig"
 
 source "drivers/rtc/Kconfig"
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index bedb689b051..dff1e67b1dd 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4301,7 +4301,7 @@ static int __init floppy_init(void)
 	}
 
 	use_virtual_dma = can_use_virtual_dma & 1;
-#if defined(CONFIG_PPC64)
+#if defined(CONFIG_PPC_MERGE)
 	if (check_legacy_ioport(FDC1)) {
 		del_timer(&fd_timeout);
 		err = -ENODEV;
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
index d3a2bc36129..588fca542a9 100644
--- a/drivers/char/genrtc.c
+++ b/drivers/char/genrtc.c
@@ -200,13 +200,13 @@ static ssize_t gen_rtc_read(struct file *file, char __user *buf,
 	/* first test allows optimizer to nuke this case for 32-bit machines */
 	if (sizeof (int) != sizeof (long) && count == sizeof (unsigned int)) {
 		unsigned int uidata = data;
-		retval = put_user(uidata, (unsigned long __user *)buf);
+		retval = put_user(uidata, (unsigned int __user *)buf) ?:
+			sizeof(unsigned int);
 	}
 	else {
-		retval = put_user(data, (unsigned long __user *)buf);
+		retval = put_user(data, (unsigned long __user *)buf) ?:
+			sizeof(unsigned long);
 	}
-	if (!retval)
-		retval = sizeof(unsigned long);
  out:
 	current->state = TASK_RUNNING;
 	remove_wait_queue(&gen_rtc_wait, &wait);
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 935670a3cd9..5755b7e5f18 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -860,9 +860,32 @@ static void k_slock(struct vc_data *vc, unsigned char value, char up_flag, struc
 }
 
 /* by default, 300ms interval for combination release */
-static long brl_timeout = 300;
-MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for combination on first release, < 0 for dead characters)");
-module_param(brl_timeout, long, 0644);
+static unsigned brl_timeout = 300;
+MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
+module_param(brl_timeout, uint, 0644);
+
+static unsigned brl_nbchords = 1;
+MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
+module_param(brl_nbchords, uint, 0644);
+
+static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag, struct pt_regs *regs)
+{
+	static unsigned long chords;
+	static unsigned committed;
+
+	if (!brl_nbchords)
+		k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag, regs);
+	else {
+		committed |= pattern;
+		chords++;
+		if (chords == brl_nbchords) {
+			k_unicode(vc, BRL_UC_ROW | committed, up_flag, regs);
+			chords = 0;
+			committed = 0;
+		}
+	}
+}
+
 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
 {
 	static unsigned pressed,committing;
@@ -882,11 +905,6 @@ static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct
 	if (value > 8)
 		return;
 
-	if (brl_timeout < 0) {
-		k_deadunicode(vc, BRL_UC_ROW | (1 << (value - 1)), up_flag, regs);
-		return;
-	}
-
 	if (up_flag) {
 		if (brl_timeout) {
 			if (!committing ||
@@ -897,13 +915,13 @@ static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct
 			pressed &= ~(1 << (value - 1));
 			if (!pressed) {
 				if (committing) {
-					k_unicode(vc, BRL_UC_ROW | committing, 0, regs);
+					k_brlcommit(vc, committing, 0, regs);
 					committing = 0;
 				}
 			}
 		} else {
 			if (committing) {
-				k_unicode(vc, BRL_UC_ROW | committing, 0, regs);
+				k_brlcommit(vc, committing, 0, regs);
 				committing = 0;
 			}
 			pressed &= ~(1 << (value - 1));
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 8666171e187..d3ba2f860ef 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -271,7 +271,7 @@ static int mwave_ioctl(struct inode *inode, struct file *file,
 				ipcnum,
 				pDrvData->IPCs[ipcnum].usIntCount);
 	
-			if (ipcnum > ARRAY_SIZE(pDrvData->IPCs)) {
+			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
 						" IOCTL_MW_REGISTER_IPC:"
diff --git a/drivers/char/tipar.c b/drivers/char/tipar.c
index eb2eb3e12d6..079db5a935a 100644
--- a/drivers/char/tipar.c
+++ b/drivers/char/tipar.c
@@ -515,7 +515,7 @@ tipar_init_module(void)
 		err = PTR_ERR(tipar_class);
 		goto out_chrdev;
 	}
-	if (parport_register_driver(&tipar_driver) || tp_count == 0) {
+	if (parport_register_driver(&tipar_driver)) {
 		printk(KERN_ERR "tipar: unable to register with parport\n");
 		err = -EIO;
 		goto out_class;
diff --git a/drivers/infiniband/hw/ipath/ipath_debug.h b/drivers/infiniband/hw/ipath/ipath_debug.h
index 593e28969c6..46762387f5f 100644
--- a/drivers/infiniband/hw/ipath/ipath_debug.h
+++ b/drivers/infiniband/hw/ipath/ipath_debug.h
@@ -60,11 +60,11 @@
 #define __IPATH_KERNEL_SEND 0x2000	/* use kernel mode send */
 #define __IPATH_EPKTDBG     0x4000	/* print ethernet packet data */
 #define __IPATH_SMADBG      0x8000	/* sma packet debug */
-#define __IPATH_IPATHDBG    0x10000	/* Ethernet (IPATH) general debug on */
-#define __IPATH_IPATHWARN   0x20000	/* Ethernet (IPATH) warnings on */
-#define __IPATH_IPATHERR    0x40000	/* Ethernet (IPATH) errors on */
-#define __IPATH_IPATHPD     0x80000	/* Ethernet (IPATH) packet dump on */
-#define __IPATH_IPATHTABLE  0x100000	/* Ethernet (IPATH) table dump on */
+#define __IPATH_IPATHDBG    0x10000	/* Ethernet (IPATH) gen debug */
+#define __IPATH_IPATHWARN   0x20000	/* Ethernet (IPATH) warnings */
+#define __IPATH_IPATHERR    0x40000	/* Ethernet (IPATH) errors */
+#define __IPATH_IPATHPD     0x80000	/* Ethernet (IPATH) packet dump */
+#define __IPATH_IPATHTABLE  0x100000	/* Ethernet (IPATH) table dump */
 
 #else				/* _IPATH_DEBUGGING */
 
@@ -79,11 +79,12 @@
 #define __IPATH_TRSAMPLE  0x0	/* generate trace buffer sample entries */
 #define __IPATH_VERBDBG   0x0	/* very verbose debug */
 #define __IPATH_PKTDBG    0x0	/* print packet data */
-#define __IPATH_PROCDBG   0x0	/* print process startup (init)/exit messages */
+#define __IPATH_PROCDBG   0x0	/* process startup (init)/exit messages */
 /* print mmap/nopage stuff, not using VDBG any more */
 #define __IPATH_MMDBG     0x0
 #define __IPATH_EPKTDBG   0x0	/* print ethernet packet data */
-#define __IPATH_SMADBG    0x0   /* print process startup (init)/exit messages */#define __IPATH_IPATHDBG  0x0	/* Ethernet (IPATH) table dump on */
+#define __IPATH_SMADBG    0x0   /* process startup (init)/exit messages */
+#define __IPATH_IPATHDBG  0x0	/* Ethernet (IPATH) table dump on */
 #define __IPATH_IPATHWARN 0x0	/* Ethernet (IPATH) warnings on   */
 #define __IPATH_IPATHERR  0x0	/* Ethernet (IPATH) errors on   */
 #define __IPATH_IPATHPD   0x0	/* Ethernet (IPATH) packet dump on   */
diff --git a/drivers/infiniband/hw/ipath/ipath_diag.c b/drivers/infiniband/hw/ipath/ipath_diag.c
index 7d3fb6996b4..28ddceb260e 100644
--- a/drivers/infiniband/hw/ipath/ipath_diag.c
+++ b/drivers/infiniband/hw/ipath/ipath_diag.c
@@ -277,13 +277,14 @@ static int ipath_diag_open(struct inode *in, struct file *fp)
 
 bail:
 	spin_unlock_irqrestore(&ipath_devs_lock, flags);
-	mutex_unlock(&ipath_mutex);
 
 	/* Only expose a way to reset the device if we
 	   make it into diag mode. */
 	if (ret == 0)
 		ipath_expose_reset(&dd->pcidev->dev);
 
+	mutex_unlock(&ipath_mutex);
+
 	return ret;
 }
 
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index e7617c3982e..398add4d4cb 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -418,9 +418,19 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
 
 	ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
 	if (ret) {
-		dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
-			 "fails: %d\n", dd->ipath_unit, ret);
-		goto bail_regions;
+		/*
+		 * if the 64 bit setup fails, try 32 bit.  Some systems
+		 * do not setup 64 bit maps on systems with 2GB or less
+		 * memory installed.
+		 */
+		ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+		if (ret) {
+			dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
+				 "fails: %d\n", dd->ipath_unit, ret);
+			goto bail_regions;
+		}
+		else
+			ipath_dbg("No 64bit DMA mask, used 32 bit mask\n");
 	}
 
 	pci_set_master(pdev);
@@ -1949,7 +1959,7 @@ int ipath_reset_device(int unit)
 	}
 
 	if (dd->ipath_pd)
-		for (i = 1; i < dd->ipath_portcnt; i++) {
+		for (i = 1; i < dd->ipath_cfgports; i++) {
 			if (dd->ipath_pd[i] && dd->ipath_pd[i]->port_cnt) {
 				ipath_dbg("unit %u port %d is in use "
 					  "(PID %u cmd %s), can't reset\n",
diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c
index 2823ff9c0c6..16f640e1c16 100644
--- a/drivers/infiniband/hw/ipath/ipath_init_chip.c
+++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c
@@ -53,13 +53,19 @@ MODULE_PARM_DESC(cfgports, "Set max number of ports to use");
 
 /*
  * Number of buffers reserved for driver (layered drivers and SMA
- * send).  Reserved at end of buffer list.
+ * send).  Reserved at end of buffer list.   Initialized based on
+ * number of PIO buffers if not set via module interface.
+ * The problem with this is that it's global, but we'll use different
+ * numbers for different chip types.  So the default value is not
+ * very useful.  I've redefined it for the 1.3 release so that it's
+ * zero unless set by the user to something else, in which case we
+ * try to respect it.
  */
-static ushort ipath_kpiobufs = 32;
+static ushort ipath_kpiobufs;
 
 static int ipath_set_kpiobufs(const char *val, struct kernel_param *kp);
 
-module_param_call(kpiobufs, ipath_set_kpiobufs, param_get_uint,
+module_param_call(kpiobufs, ipath_set_kpiobufs, param_get_ushort,
 		  &ipath_kpiobufs, S_IWUSR | S_IRUGO);
 MODULE_PARM_DESC(kpiobufs, "Set number of PIO buffers for driver");
 
@@ -531,8 +537,11 @@ static int init_housekeeping(struct ipath_devdata *dd,
 	 * Don't clear ipath_flags as 8bit mode was set before
 	 * entering this func. However, we do set the linkstate to
 	 * unknown, so we can watch for a transition.
+	 * PRESENT is set because we want register reads to work,
+	 * and the kernel infrastructure saw it in config space;
+	 * We clear it if we have failures.
 	 */
-	dd->ipath_flags |= IPATH_LINKUNK;
+	dd->ipath_flags |= IPATH_LINKUNK | IPATH_PRESENT;
 	dd->ipath_flags &= ~(IPATH_LINKACTIVE | IPATH_LINKARMED |
 			     IPATH_LINKDOWN | IPATH_LINKINIT);
 
@@ -560,6 +569,7 @@ static int init_housekeeping(struct ipath_devdata *dd,
 	    || (dd->ipath_uregbase & 0xffffffff) == 0xffffffff) {
 		ipath_dev_err(dd, "Register read failures from chip, "
 			      "giving up initialization\n");
+		dd->ipath_flags &= ~IPATH_PRESENT;
 		ret = -ENODEV;
 		goto done;
 	}
@@ -682,16 +692,14 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit)
 	 */
 	dd->ipath_pioavregs = ALIGN(val, sizeof(u64) * BITS_PER_BYTE / 2)
 		/ (sizeof(u64) * BITS_PER_BYTE / 2);
-	if (!ipath_kpiobufs)	/* have to have at least 1, for SMA */
-		kpiobufs = ipath_kpiobufs = 1;
-	else if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) <
-		 (dd->ipath_cfgports * IPATH_MIN_USER_PORT_BUFCNT)) {
-		dev_info(&dd->pcidev->dev, "Too few PIO buffers (%u) "
-			 "for %u ports to have %u each!\n",
-			 dd->ipath_piobcnt2k + dd->ipath_piobcnt4k,
-			 dd->ipath_cfgports, IPATH_MIN_USER_PORT_BUFCNT);
-		kpiobufs = 1;	/* reserve just the minimum for SMA/ether */
-	} else
+	if (ipath_kpiobufs == 0) {
+		/* not set by user, or set explictly to default  */
+		if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > 128)
+			kpiobufs = 32;
+		else
+			kpiobufs = 16;
+	}
+	else
 		kpiobufs = ipath_kpiobufs;
 
 	if (kpiobufs >
diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c
index 0bcb428041f..3e72a1fe3d7 100644
--- a/drivers/infiniband/hw/ipath/ipath_intr.c
+++ b/drivers/infiniband/hw/ipath/ipath_intr.c
@@ -665,14 +665,14 @@ static void handle_layer_pioavail(struct ipath_devdata *dd)
 
 	ret = __ipath_layer_intr(dd, IPATH_LAYER_INT_SEND_CONTINUE);
 	if (ret > 0)
-		goto clear;
+		goto set;
 
 	ret = __ipath_verbs_piobufavail(dd);
 	if (ret > 0)
-		goto clear;
+		goto set;
 
 	return;
-clear:
+set:
 	set_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl);
 	ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
 			 dd->ipath_sendctrl);
@@ -719,11 +719,24 @@ static void handle_rcv(struct ipath_devdata *dd, u32 istat)
 irqreturn_t ipath_intr(int irq, void *data, struct pt_regs *regs)
 {
 	struct ipath_devdata *dd = data;
-	u32 istat = ipath_read_kreg32(dd, dd->ipath_kregs->kr_intstatus);
+	u32 istat;
 	ipath_err_t estat = 0;
 	static unsigned unexpected = 0;
 	irqreturn_t ret;
 
+	if(!(dd->ipath_flags & IPATH_PRESENT)) {
+		/* this is mostly so we don't try to touch the chip while
+		 * it is being reset */
+		/*
+		 * This return value is perhaps odd, but we do not want the
+		 * interrupt core code to remove our interrupt handler
+		 * because we don't appear to be handling an interrupt
+		 * during a chip reset.
+		 */
+		return IRQ_HANDLED;
+	}
+
+	istat = ipath_read_kreg32(dd, dd->ipath_kregs->kr_intstatus);
 	if (unlikely(!istat)) {
 		ipath_stats.sps_nullintr++;
 		ret = IRQ_NONE; /* not our interrupt, or already handled */
diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
index 0ce5f19c9d6..e6507f8115b 100644
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ b/drivers/infiniband/hw/ipath/ipath_kernel.h
@@ -731,7 +731,7 @@ u64 ipath_read_kreg64_port(const struct ipath_devdata *, ipath_kreg,
 static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd,
 				    ipath_ureg regno, int port)
 {
-	if (!dd->ipath_kregbase)
+	if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
 		return 0;
 
 	return readl(regno + (u64 __iomem *)
@@ -762,7 +762,7 @@ static inline void ipath_write_ureg(const struct ipath_devdata *dd,
 static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd,
 				    ipath_kreg regno)
 {
-	if (!dd->ipath_kregbase)
+	if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
 		return -1;
 	return readl((u32 __iomem *) & dd->ipath_kregbase[regno]);
 }
@@ -770,7 +770,7 @@ static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd,
 static inline u64 ipath_read_kreg64(const struct ipath_devdata *dd,
 				    ipath_kreg regno)
 {
-	if (!dd->ipath_kregbase)
+	if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
 		return -1;
 
 	return readq(&dd->ipath_kregbase[regno]);
@@ -786,7 +786,7 @@ static inline void ipath_write_kreg(const struct ipath_devdata *dd,
 static inline u64 ipath_read_creg(const struct ipath_devdata *dd,
 				  ipath_sreg regno)
 {
-	if (!dd->ipath_kregbase)
+	if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
 		return 0;
 
 	return readq(regno + (u64 __iomem *)
@@ -797,7 +797,7 @@ static inline u64 ipath_read_creg(const struct ipath_devdata *dd,
 static inline u32 ipath_read_creg32(const struct ipath_devdata *dd,
 					 ipath_sreg regno)
 {
-	if (!dd->ipath_kregbase)
+	if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
 		return 0;
 	return readl(regno + (u64 __iomem *)
 		     (dd->ipath_cregbase +
diff --git a/drivers/infiniband/hw/ipath/ipath_layer.c b/drivers/infiniband/hw/ipath/ipath_layer.c
index 69ed1100701..9cb5258ffed 100644
--- a/drivers/infiniband/hw/ipath/ipath_layer.c
+++ b/drivers/infiniband/hw/ipath/ipath_layer.c
@@ -46,13 +46,15 @@
 /* Acquire before ipath_devs_lock. */
 static DEFINE_MUTEX(ipath_layer_mutex);
 
+static int ipath_verbs_registered;
+
 u16 ipath_layer_rcv_opcode;
+
 static int (*layer_intr)(void *, u32);
 static int (*layer_rcv)(void *, void *, struct sk_buff *);
 static int (*layer_rcv_lid)(void *, void *);
 static int (*verbs_piobufavail)(void *);
 static void (*verbs_rcv)(void *, void *, void *, u32);
-static int ipath_verbs_registered;
 
 static void *(*layer_add_one)(int, struct ipath_devdata *);
 static void (*layer_remove_one)(void *);
@@ -586,6 +588,8 @@ void ipath_verbs_unregister(void)
 	verbs_rcv = NULL;
 	verbs_timer_cb = NULL;
 
+	ipath_verbs_registered = 0;
+
 	mutex_unlock(&ipath_layer_mutex);
 }
 
diff --git a/drivers/infiniband/hw/ipath/ipath_pe800.c b/drivers/infiniband/hw/ipath/ipath_pe800.c
index e1dc4f75706..6318067ab5e 100644
--- a/drivers/infiniband/hw/ipath/ipath_pe800.c
+++ b/