18 files changed, 431 insertions, 182 deletions

diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index e5eb97a910e..9ea5b8ecc7e 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -1072,7 +1072,28 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
 			       "ASUS A7V ACPI BIOS Revision 1007"),
 		     },
 	 },
-
+	{
+		/*
+		 * Latest BIOS for IBM 600E (1.16) has bad pcinum
+		 * for LPC bridge, which is needed for the PCI
+		 * interrupt links to work. DSDT fix is in bug 5966.
+		 * 2645, 2646 model numbers are shared with 600/600E/600X
+		 */
+	 .callback = disable_acpi_irq,
+	 .ident = "IBM Thinkpad 600 Series 2645",
+	 .matches = {
+		     DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
+		     DMI_MATCH(DMI_BOARD_NAME, "2645"),
+		     },
+	 },
+	{
+	 .callback = disable_acpi_irq,
+	 .ident = "IBM Thinkpad 600 Series 2646",
+	 .matches = {
+		     DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
+		     DMI_MATCH(DMI_BOARD_NAME, "2646"),
+		     },
+	 },
 	/*
 	 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
 	 */
diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index bf86f7662d8..a7d22d9f3d7 100644
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -14,11 +14,8 @@
 
 #ifdef CONFIG_ACPI
 
-static int nvidia_hpet_detected __initdata;
-
 static int __init nvidia_hpet_check(struct acpi_table_header *header)
 {
-	nvidia_hpet_detected = 1;
 	return 0;
 }
 #endif
@@ -29,9 +26,7 @@ static int __init check_bridge(int vendor, int device)
 	/* According to Nvidia all timer overrides are bogus unless HPET
 	   is enabled. */
 	if (!acpi_use_timer_override && vendor == PCI_VENDOR_ID_NVIDIA) {
-		nvidia_hpet_detected = 0;
-		acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check);
-		if (nvidia_hpet_detected == 0) {
+		if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check)) {
 			acpi_skip_timer_override = 1;
 			  printk(KERN_INFO "Nvidia board "
                        "detected. Ignoring ACPI "
diff --git a/arch/ia64/sn/kernel/io_acpi_init.c b/arch/ia64/sn/kernel/io_acpi_init.c
index 8c331ca6e5c..c6216f454ff 100644
--- a/arch/ia64/sn/kernel/io_acpi_init.c
+++ b/arch/ia64/sn/kernel/io_acpi_init.c
@@ -53,12 +53,15 @@ sal_ioif_init(u64 *result)
 }
 
 /*
- * sn_hubdev_add - The 'add' function of the acpi_sn_hubdev_driver.
- *		   Called for every "SGIHUB" or "SGITIO" device defined
- *		   in the ACPI namespace.
+ * sn_acpi_hubdev_init() - This function is called by acpi_ns_get_device_callback()
+ *			   for all SGIHUB and SGITIO acpi devices defined in the
+ *			   DSDT. It obtains the hubdev_info pointer from the
+ *			   ACPI vendor resource, which the PROM setup, and sets up the
+ *			   hubdev_info in the pda.
  */
-static int __init
-sn_hubdev_add(struct acpi_device *device)
+
+static acpi_status __init
+sn_acpi_hubdev_init(acpi_handle handle, u32 depth, void *context, void **ret)
 {
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	u64 addr;
@@ -67,18 +70,19 @@ sn_hubdev_add(struct acpi_device *device)
 	int i;
 	u64 nasid;
 	struct acpi_resource *resource;
-	int ret = 0;
 	acpi_status status;
 	struct acpi_resource_vendor_typed *vendor;
 	extern void sn_common_hubdev_init(struct hubdev_info *);
 
-	status = acpi_get_vendor_resource(device->handle, METHOD_NAME__CRS,
+	status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
 					  &sn_uuid, &buffer);
 	if (ACPI_FAILURE(status)) {
 		printk(KERN_ERR
-		       "sn_hubdev_add: acpi_get_vendor_resource() failed: %d\n",
-		        status);
-		return 1;
+		       "sn_acpi_hubdev_init: acpi_get_vendor_resource() "
+		       "(0x%x) failed for: ", status);
+		acpi_ns_print_node_pathname(handle, NULL);
+		printk("\n");
+		return AE_OK;		/* Continue walking namespace */
 	}
 
 	resource = buffer.pointer;
@@ -86,9 +90,10 @@ sn_hubdev_add(struct acpi_device *device)
 	if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=
 	    sizeof(struct hubdev_info *)) {
 		printk(KERN_ERR
-		       "sn_hubdev_add: Invalid vendor data length: %d\n",
+		       "sn_acpi_hubdev_init: Invalid vendor data length: %d for: ",
 		        vendor->byte_length);
-		ret = 1;
+		acpi_ns_print_node_pathname(handle, NULL);
+		printk("\n");
 		goto exit;
 	}
 
@@ -103,7 +108,7 @@ sn_hubdev_add(struct acpi_device *device)
 
 exit:
 	kfree(buffer.pointer);
-	return ret;
+	return AE_OK;		/* Continue walking namespace */
 }
 
 /*
@@ -441,14 +446,6 @@ sn_acpi_slot_fixup(struct pci_dev *dev)
 
 EXPORT_SYMBOL(sn_acpi_slot_fixup);
 
-static struct acpi_driver acpi_sn_hubdev_driver = {
-	.name = "SGI HUBDEV Driver",
-	.ids = "SGIHUB,SGITIO",
-	.ops = {
-		.add = sn_hubdev_add,
-		},
-};
-
 
 /*
  * sn_acpi_bus_fixup -  Perform SN specific setup of software structs
@@ -492,7 +489,10 @@ sn_io_acpi_init(void)
 	/* SN Altix does not follow the IOSAPIC IRQ routing model */
 	acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
 
-	acpi_bus_register_driver(&acpi_sn_hubdev_driver);
+	/* Setup hubdev_info for all SGIHUB/SGITIO devices */
+	acpi_get_devices("SGIHUB", sn_acpi_hubdev_init, NULL, NULL);
+	acpi_get_devices("SGITIO", sn_acpi_hubdev_init, NULL, NULL);
+
 	status = sal_ioif_init(&result);
 	if (status || result)
 		panic("sal_ioif_init failed: [%lx] %s\n",
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 8571e52c2ef..bd5373d593e 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -397,6 +397,8 @@ void __init sn_setup(char **cmdline_p)
 	ia64_sn_set_os_feature(OSF_PCISEGMENT_ENABLE);
 	ia64_sn_set_os_feature(OSF_ACPI_ENABLE);
 
+	/* Load the new DSDT and SSDT tables into the global table list. */
+	acpi_table_init();
 
 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
 	/*
diff --git a/arch/mips/dec/prom/init.c b/arch/mips/dec/prom/init.c
index bf2858071f1..a217aafe59f 100644
--- a/arch/mips/dec/prom/init.c
+++ b/arch/mips/dec/prom/init.c
@@ -103,9 +103,6 @@ void __init prom_init(void)
 	if (prom_is_rex(magic))
 		rex_clear_cache();
 
-	/* Register the early console.  */
-	register_prom_console();
-
 	/* Were we compiled with the right CPU option? */
 #if defined(CONFIG_CPU_R3000)
 	if ((current_cpu_data.cputype == CPU_R4000SC) ||
diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig
index 67dac6204b6..bdf24a7b549 100644
--- a/arch/mips/sibyte/Kconfig
+++ b/arch/mips/sibyte/Kconfig
@@ -1,31 +1,35 @@
 config SIBYTE_SB1250
 	bool
 	select HW_HAS_PCI
-	select SIBYTE_HAS_LDT
+	select SIBYTE_ENABLE_LDT_IF_PCI
 	select SIBYTE_SB1xxx_SOC
 	select SYS_SUPPORTS_SMP
 
 config SIBYTE_BCM1120
 	bool
 	select SIBYTE_BCM112X
+	select SIBYTE_HAS_ZBUS_PROFILING
 	select SIBYTE_SB1xxx_SOC
 
 config SIBYTE_BCM1125
 	bool
 	select HW_HAS_PCI
 	select SIBYTE_BCM112X
+	select SIBYTE_HAS_ZBUS_PROFILING
 	select SIBYTE_SB1xxx_SOC
 
 config SIBYTE_BCM1125H
 	bool
 	select HW_HAS_PCI
 	select SIBYTE_BCM112X
-	select SIBYTE_HAS_LDT
+	select SIBYTE_ENABLE_LDT_IF_PCI
+	select SIBYTE_HAS_ZBUS_PROFILING
 	select SIBYTE_SB1xxx_SOC
 
 config SIBYTE_BCM112X
 	bool
 	select SIBYTE_SB1xxx_SOC
+	select SIBYTE_HAS_ZBUS_PROFILING
 
 config SIBYTE_BCM1x80
 	bool
@@ -37,6 +41,7 @@ config SIBYTE_BCM1x55
 	bool
 	select HW_HAS_PCI
 	select SIBYTE_SB1xxx_SOC
+	select SIBYTE_HAS_ZBUS_PROFILING
 	select SYS_SUPPORTS_SMP
 
 config SIBYTE_SB1xxx_SOC
@@ -95,8 +100,10 @@ config CPU_SB1_PASS_2
 
 config SIBYTE_HAS_LDT
 	bool
-	depends on PCI && (SIBYTE_SB1250 || SIBYTE_BCM1125H)
-	default y
+
+config SIBYTE_ENABLE_LDT_IF_PCI
+	bool
+	select SIBYTE_HAS_LDT if PCI
 
 config SIMULATION
 	bool "Running under simulation"
@@ -162,5 +169,8 @@ config SIBYTE_SB1250_PROF
 	depends on SIBYTE_SB1xxx_SOC
 
 config SIBYTE_TBPROF
-	bool "Support for ZBbus profiling"
-	depends on SIBYTE_SB1xxx_SOC
+	tristate "Support for ZBbus profiling"
+	depends on SIBYTE_HAS_ZBUS_PROFILING
+
+config SIBYTE_HAS_ZBUS_PROFILING
+	bool
diff --git a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
index 212547c5731..ea0ca131a3c 100644
--- a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
+++ b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
@@ -1,6 +1,4 @@
 /*
- * Copyright (C) 2001, 2002, 2003 Broadcom Corporation
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
@@ -14,10 +12,16 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Copyright (C) 2001, 2002, 2003 Broadcom Corporation
+ * Copyright (C) 2007 Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2007 MIPS Technologies, Inc.
+ *    written by Ralf Baechle <ralf@linux-mips.org>
  */
 
-#define SBPROF_TB_DEBUG 0
+#undef DEBUG
 
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
@@ -27,24 +31,98 @@
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
 #include <linux/errno.h>
-#include <linux/reboot.h>
-#include <linux/smp_lock.h>
+#include <linux/types.h>
 #include <linux/wait.h>
-#include <asm/uaccess.h>
+
 #include <asm/io.h>
 #include <asm/sibyte/sb1250.h>
 #include <asm/sibyte/sb1250_regs.h>
 #include <asm/sibyte/sb1250_scd.h>
 #include <asm/sibyte/sb1250_int.h>
-#include <asm/sibyte/trace_prof.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
 
-#define DEVNAME "bcm1250_tbprof"
+#define SBPROF_TB_MAJOR 240
+
+typedef u64 tb_sample_t[6*256];
+
+enum open_status {
+	SB_CLOSED,
+	SB_OPENING,
+	SB_OPEN
+};
+
+struct sbprof_tb {
+	wait_queue_head_t	tb_sync;
+	wait_queue_head_t	tb_read;
+	struct mutex		lock;
+	enum open_status	open;
+	tb_sample_t		*sbprof_tbbuf;
+	int			next_tb_sample;
+
+	volatile int		tb_enable;
+	volatile int		tb_armed;
+
+};
 
 static struct sbprof_tb sbp;
 
+#define MAX_SAMPLE_BYTES (24*1024*1024)
+#define MAX_TBSAMPLE_BYTES (12*1024*1024)
+
+#define MAX_SAMPLES (MAX_SAMPLE_BYTES/sizeof(u_int32_t))
+#define TB_SAMPLE_SIZE (sizeof(tb_sample_t))
+#define MAX_TB_SAMPLES (MAX_TBSAMPLE_BYTES/TB_SAMPLE_SIZE)
+
+/* ioctls */
+#define SBPROF_ZBSTART		_IOW('s', 0, int)
+#define SBPROF_ZBSTOP		_IOW('s', 1, int)
+#define SBPROF_ZBWAITFULL	_IOW('s', 2, int)
+
+/*
+ * Routines for using 40-bit SCD cycle counter
+ *
+ * Client responsible for either handling interrupts or making sure
+ * the cycles counter never saturates, e.g., by doing
+ * zclk_timer_init(0) at least every 2^40 - 1 ZCLKs.
+ */
+
+/*
+ * Configures SCD counter 0 to count ZCLKs starting from val;
+ * Configures SCD counters1,2,3 to count nothing.
+ * Must not be called while gathering ZBbus profiles.
+ */
+
+#define zclk_timer_init(val) \
+  __asm__ __volatile__ (".set push;" \
+			".set mips64;" \
+			"la   $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
+			"sd   %0, 0x10($8);"   /* write val to counter0 */ \
+			"sd   %1, 0($8);"      /* config counter0 for zclks*/ \
+			".set pop" \
+			: /* no outputs */ \
+						     /* enable, counter0 */ \
+			: /* inputs */ "r"(val), "r" ((1ULL << 33) | 1ULL) \
+			: /* modifies */ "$8" )
+
+
+/* Reads SCD counter 0 and puts result in value
+   unsigned long long val; */
+#define zclk_get(val) \
+  __asm__ __volatile__ (".set push;" \
+			".set mips64;" \
+			"la   $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
+			"ld   %0, 0x10($8);"   /* write val to counter0 */ \
+			".set pop" \
+			: /* outputs */ "=r"(val) \
+			: /* inputs */ \
+			: /* modifies */ "$8" )
+
+#define DEVNAME "bcm1250_tbprof"
+
 #define TB_FULL (sbp.next_tb_sample == MAX_TB_SAMPLES)
 
-/************************************************************************
+/*
  * Support for ZBbus sampling using the trace buffer
  *
  * We use the SCD performance counter interrupt, caused by a Zclk counter
@@ -54,30 +132,36 @@ static struct sbprof_tb sbp;
  * overflow.
  *
  * We map the interrupt for trace_buffer_freeze to handle it on CPU 0.
- *
- ************************************************************************/
+ */
 
-static u_int64_t tb_period;
+static u64 tb_period;
 
 static void arm_tb(void)
 {
-        u_int64_t scdperfcnt;
-	u_int64_t next = (1ULL << 40) - tb_period;
-	u_int64_t tb_options = M_SCD_TRACE_CFG_FREEZE_FULL;
-	/* Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to
-	   trigger start of trace.  XXX vary sampling period */
+        u64 scdperfcnt;
+	u64 next = (1ULL << 40) - tb_period;
+	u64 tb_options = M_SCD_TRACE_CFG_FREEZE_FULL;
+
+	/*
+	 * Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to trigger
+	 *start of trace.  XXX vary sampling period
+	 */
 	__raw_writeq(0, IOADDR(A_SCD_PERF_CNT_1));
 	scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG));
-	/* Unfortunately, in Pass 2 we must clear all counters to knock down
-	   a previous interrupt request.  This means that bus profiling
-	   requires ALL of the SCD perf counters. */
+
+	/*
+	 * Unfortunately, in Pass 2 we must clear all counters to knock down a
+	 * previous interrupt request.  This means that bus profiling requires
+	 * ALL of the SCD perf counters.
+	 */
 	__raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) |
-						// keep counters 0,2,3 as is
-		     M_SPC_CFG_ENABLE |		// enable counting
-		     M_SPC_CFG_CLEAR |		// clear all counters
-		     V_SPC_CFG_SRC1(1),		// counter 1 counts cycles
+						/* keep counters 0,2,3 as is */
+		     M_SPC_CFG_ENABLE |		/* enable counting */
+		     M_SPC_CFG_CLEAR |		/* clear all counters */
+		     V_SPC_CFG_SRC1(1),		/* counter 1 counts cycles */
 		     IOADDR(A_SCD_PERF_CNT_CFG));
 	__raw_writeq(next, IOADDR(A_SCD_PERF_CNT_1));
+
 	/* Reset the trace buffer */
 	__raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
 #if 0 && defined(M_SCD_TRACE_CFG_FORCECNT)
@@ -91,43 +175,45 @@ static void arm_tb(void)
 static irqreturn_t sbprof_tb_intr(int irq, void *dev_id)
 {
 	int i;
-	DBG(printk(DEVNAME ": tb_intr\n"));
+
+	pr_debug(DEVNAME ": tb_intr\n");
+
 	if (sbp.next_tb_sample < MAX_TB_SAMPLES) {
 		/* XXX should use XKPHYS to make writes bypass L2 */
-		u_int64_t *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++];
+		u64 *p = sbp.sbprof_tbbuf[sbp.next_tb_sample++];
 		/* Read out trace */
 		__raw_writeq(M_SCD_TRACE_CFG_START_READ,
 			     IOADDR(A_SCD_TRACE_CFG));
 		__asm__ __volatile__ ("sync" : : : "memory");
 		/* Loop runs backwards because bundles are read out in reverse order */
 		for (i = 256 * 6; i > 0; i -= 6) {
-			// Subscripts decrease to put bundle in the order
-			//   t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi
+			/* Subscripts decrease to put bundle in the order */
+			/*   t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi */
 			p[i - 1] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t2 hi
+								/* read t2 hi */
 			p[i - 2] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t2 lo
+								/* read t2 lo */
 			p[i - 3] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t1 hi
+								/* read t1 hi */
 			p[i - 4] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t1 lo
+								/* read t1 lo */
 			p[i - 5] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t0 hi
+								/* read t0 hi */
 			p[i - 6] = __raw_readq(IOADDR(A_SCD_TRACE_READ));
-								// read t0 lo
+								/* read t0 lo */
 		}
 		if (!sbp.tb_enable) {
-			DBG(printk(DEVNAME ": tb_intr shutdown\n"));
+			pr_debug(DEVNAME ": tb_intr shutdown\n");
 			__raw_writeq(M_SCD_TRACE_CFG_RESET,
 				     IOADDR(A_SCD_TRACE_CFG));
 			sbp.tb_armed = 0;
 			wake_up(&sbp.tb_sync);
 		} else {
-			arm_tb();	// knock down current interrupt and get another one later
+			arm_tb();	/* knock down current interrupt and get another one later */
 		}
 	} else {
 		/* No more trace buffer samples */
-		DBG(printk(DEVNAME ": tb_intr full\n"));
+		pr_debug(DEVNAME ": tb_intr full\n");
 		__raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
 		sbp.tb_armed = 0;
 		if (!sbp.tb_enable) {
@@ -135,6 +221,7 @@ static irqreturn_t sbprof_tb_intr(int irq, void *dev_id)
 		}
 		wake_up(&sbp.tb_read);
 	}
+
 	return IRQ_HANDLED;
 }
 
@@ -144,23 +231,30 @@ static irqreturn_t sbprof_pc_intr(int irq, void *dev_id)
 	return IRQ_NONE;
 }
 
-int sbprof_zbprof_start(struct file *filp)
+/*
+ * Requires: Already called zclk_timer_init with a value that won't
+ *           saturate 40 bits.  No subsequent use of SCD performance counters
+ *           or trace buffer.
+ */
+
+static int sbprof_zbprof_start(struct file *filp)
 {
-	u_int64_t scdperfcnt;
+	u64 scdperfcnt;
+	int err;
 
-	if (sbp.tb_enable)
+	if (xchg(&sbp.tb_enable, 1))
 		return -EBUSY;
 
-	DBG(printk(DEVNAME ": starting\n"));
+	pr_debug(DEVNAME ": starting\n");
 
-	sbp.tb_enable = 1;
 	sbp.next_tb_sample = 0;
 	filp->f_pos = 0;
 
-	if (request_irq
-	    (K_INT_TRACE_FREEZE, sbprof_tb_intr, 0, DEVNAME " trace freeze", &sbp)) {
+	err = request_irq(K_INT_TRACE_FREEZE, sbprof_tb_intr, 0,
+	                DEVNAME " trace freeze", &sbp);
+	if (err)
 		return -EBUSY;
-	}
+
 	/* Make sure there isn't a perf-cnt interrupt waiting */
 	scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG));
 	/* Disable and clear counters, override SRC_1 */
@@ -168,18 +262,21 @@ int sbprof_zbprof_start(struct file *filp)
 		     M_SPC_CFG_ENABLE | M_SPC_CFG_CLEAR | V_SPC_CFG_SRC1(1),
 		     IOADDR(A_SCD_PERF_CNT_CFG));
 
-	/* We grab this interrupt to prevent others from trying to use
-           it, even though we don't want to service the interrupts
-           (they only feed into the trace-on-interrupt mechanism) */
-	if (request_irq
-	    (K_INT_PERF_CNT, sbprof_pc_intr, 0, DEVNAME " scd perfcnt", &sbp)) {
-		free_irq(K_INT_TRACE_FREEZE, &sbp);
-		return -EBUSY;
-	}
-
-	/* I need the core to mask these, but the interrupt mapper to
-	   pass them through.  I am exploiting my knowledge that
-	   cp0_status masks out IP[5]. krw */
+	/*
+	 * We grab this interrupt to prevent others from trying to use it, even
+	 * though we don't want to service the interrupts (they only feed into
+	 * the trace-on-interrupt mechanism)
+	 */
+	err = request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0,
+	                DEVNAME " scd perfcnt", &sbp);
+	if (err)
+		goto out_free_irq;
+
+	/*
+	 * I need the core to mask these, but the interrupt mapper to pass them
+	 * through.  I am exploiting my knowledge that cp0_status masks out
+	 * IP[5]. krw
+	 */
 	__raw_writeq(K_INT_MAP_I3,
 		     IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_MAP_BASE) +
 			    (K_INT_PERF_CNT << 3)));
@@ -201,7 +298,7 @@ int sbprof_zbprof_start(struct file *filp)
 	__raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_3));
 
 	/* Initialize Trace Event 0-7 */
-	//				when interrupt
+	/*				when interrupt */
 	__raw_writeq(M_SCD_TREVT_INTERRUPT, IOADDR(A_SCD_TRACE_EVENT_0));
 	__raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_1));
 	__raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_2));
@@ -212,10 +309,10 @@ int sbprof_zbprof_start(struct file *filp)
 	__raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_7));
 
 	/* Initialize Trace Sequence 0-7 */
-	//				     Start on event 0 (interrupt)
+	/*				     Start on event 0 (interrupt) */
 	__raw_writeq(V_SCD_TRSEQ_FUNC_START | 0x0fff,
 		     IOADDR(A_SCD_TRACE_SEQUENCE_0));
-	//			  dsamp when d used | asamp when a used
+	/*			  dsamp when d used | asamp when a used */
 	__raw_writeq(M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE |
 		     K_SCD_TRSEQ_TRIGGER_ALL,
 		     IOADDR(A_SCD_TRACE_SEQUENCE_1));
@@ -232,33 +329,41 @@ int sbprof_zbprof_start(struct file *filp)
 
 	arm_tb();
 
-	DBG(printk(DEVNAME ": done starting\n"));
+	pr_debug(DEVNAME ": done starting\n");
 
 	return 0;
+
+out_free_irq:
+	free_irq(K_INT_TRACE_FREEZE, &sbp);
+
+	return err;
 }
 
-int sbprof_zbprof_stop(void)
+static int sbprof_zbprof_stop(void)
 {
-	DEFINE_WAIT(wait);
-	DBG(printk(DEVNAME ": stopping\n"));
+	int err;
+
+	pr_debug(DEVNAME ": stopping\n");
 
 	if (sbp.tb_enable) {
+		/*
+		 * XXXKW there is a window here where the intr handler may run,
+		 * see the disable, and do the wake_up before this sleep
+		 * happens.
+		 */
+		pr_debug(DEVNAME ": wait for disarm\n");
+		err = wait_event_interruptible(sbp.tb_sync, !sbp.tb_armed);
+		pr_debug(DEVNAME ": disarm complete, stat %d\n", err);
+
+		if (err)
+			return err;
+
 		sbp.tb_enable = 0;
-		/* XXXKW there is a window here where the intr handler
-		   may run, see the disable, and do the wake_up before
-		   this sleep happens. */
-		if (sbp.tb_armed) {
-			DBG(printk(DEVNAME ": wait for disarm\n"));
-			prepare_to_wait(&sbp.tb_sync, &wait, TASK_INTERRUPTIBLE);
-			schedule();
-			finish_wait(&sbp.tb_sync, &wait);
-			DBG(printk(DEVNAME ": disarm complete\n"));
-		}
 		free_irq(K_INT_TRACE_FREEZE, &sbp);
 		free_irq(K_INT_PERF_CNT, &sbp);
 	}
 
-	DBG(printk(DEVNAME ": done stopping\n"));
+	pr_debug(DEVNAME ": done stopping\n");
 
 	return 0;
 }
@@ -268,42 +373,45 @@ static int sbprof_tb_open(struct inode *inode, struct file *filp)
 	int minor;
 
 	minor = iminor(inode);
-	if (minor != 0) {
+	if (minor != 0)
 		return -ENODEV;
-	}
-	if (sbp.open) {
+
+	if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED)
 		return -EBUSY;
-	}
 
 	memset(&sbp, 0, sizeof(struct sbprof_tb));
+
 	sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES);
-	if (!sbp.sbprof_tbbuf) {
+	if (!sbp.sbprof_tbbuf)
 		return -ENOMEM;
-	}
+
 	memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES);
 	init_waitqueue_head(&sbp.tb_sync);
 	init_waitqueue_head(&sbp.tb_read);
-	sbp.open = 1;
+	mutex_init(&sbp.lock);
+
+	sbp.open = SB_OPEN;
 
 	return 0;
 }
 
 static int sbprof_tb_release(struct inode *inode, struct file *filp)
 {
-	int minor;
+	int minor = iminor(inode);
 
-	minor = iminor(inode);
-	if (minor != 0 || !sbp.open) {
+	if (minor != 0 || !sbp.open)
 		return -ENODEV;
-	}
 
-	if (sbp.tb_armed || sbp.tb_enable) {
+	mutex_lock(&sbp.lock);
+
+	if (sbp.tb_armed || sbp.tb_enable)
 		sbprof_zbprof_stop();
-	}
 
 	vfree(sbp.sbprof_tbbuf);
 	sbp.open = 0;
 
+	mutex_unlock(&sbp.lock);
+
 	return 0;
 }
 
@@ -311,21 +419,35 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf,
 			      size_t size, loff_t *offp)
 {
 	int cur_sample, sample_off, cur_count, sample_left;
-	char *src;
-	int   count   =	 0;
-	char *dest    =	 buf;
 	long  cur_off = *offp;
+	char *dest    =	 buf;
+	int   count   =	 0;
+	char *src;
+
+	if (!access_ok(VERIFY_WRITE, buf, size))
+		return -EFAULT;
+
+	mutex_lock(&sbp.lock);
 
 	count = 0;
 	cur_sample = cur_off / TB_SAMPLE_SIZE;
 	sample_off = cur_off % TB_SAMPLE_SIZE;
 	sample_left = TB_SAMPLE_SIZE - sample_off;
+
 	while (size && (cur_sample < sbp.next_tb_sample)) {
+		int err;
+
 		cur_count = size < sample_left ? size : sample_left;
 		src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off);
-		copy_to_user(dest, src, cur_count);
-		DBG(printk(DEVNAME ": read from sample %d, %d bytes\n",
-			   cur_sample, cur_count));
+		err = __copy_to_user(dest, src, cur_count);
+		if (err) {
+			*offp = cur_off + cur_count - err;
+			mutex_unlock(&sbp.lock);
+			return err;
+		}
+
+		pr_debug(DEVNAME ": read from sample %d, %d bytes\n",
+		         cur_sample, cur_count);
 		size -= cur_count;
 		sample_left -= cur_count;
 		if (!sample_left) {
@@ -339,37 +461,43 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf,
 		dest += cur_count;
 		count += cur_count;
 	}
+
 	*offp = cur_off;
+	mutex_unlock(&sbp.lock);
 
 	return count;
 }
 
-static long sbprof_tb_ioctl(struct file *filp,
-			    unsigned int command,
-			    unsigned long arg)
+static long sbprof_tb_ioctl(struct file *filp, unsigned int command,
+	unsigned long arg)
 {
 	int error = 0;
 
-	lock_kernel();
 	switch (command) {
 	case SBPROF_ZBSTART:
+		mutex_lock(&sbp.lock);
 		error = sbprof_zbprof_start(filp);
+		mutex_unlock(&sbp.lock);
 		break;
+
 	case SBPROF_ZBSTOP:
+		mutex_lock(&sbp.lock);
 		error = sbprof_zbprof_stop();
+		mutex_unlock(&sbp.lock);
 		break;
+
 	case SBPROF_ZBWAITFULL:
-		DEFINE_WAIT(wait);
-		prepare_to_wait(&sbp.tb_read, &wait, TASK_INTERRUPTIBLE);
-		schedule();
-		finish_wait(&sbp.tb_read, &wait);
-		/* XXXKW check if interrupted? */
-		return put_user(TB_FULL, (int *) arg);
+		error = wait_event_interruptible(sbp.tb_read, TB_FULL);
+		if (error)
+			break;
+
+		error = put_user(TB_FULL, (int *) arg);
+		break;
+
 	default:
 		error = -EINVAL;
 		break;
 	}
-	unlock_kernel();
 
 	return error;
 }
@@ -384,23 +512,60 @@ static const struct file_operations sbprof_tb_fops = {
 	.mmap		= NULL,
 };
 
+static struct class *tb_class;
+static struct device *tb_dev;
+
 static int __init sbprof_tb_init(void)
 {
+	struct device *dev;
+	struct class *tbc;
+	int err;
+
 	if (register_chrdev(SBPROF_TB_MAJOR, DEVNAME, &sbprof_tb_fops)) {
 		printk(KERN_WARNING DEVNAME ": initialization failed (dev %d)\n",
 		       SBPROF_TB_MAJOR);
 		return -EIO;
 	}
+
+	tbc = class_create(THIS_MODULE, "sb_tracebuffer");
+	if (IS_ERR(tbc)) {
+		err = PTR_ERR(tbc);
+		goto out_chrdev;
+	}
+
+	tb_class = tbc;
+
+	dev = device_create(tbc, NULL, MKDEV(SBPROF_TB_MAJOR, 0), "tb");
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		goto out_class;
+	}
+	tb_dev = dev;
+
 	sbp.open = 0;
 	tb_period = zbbus_mhz * 10000LL;
-	printk(KERN_INFO DEVNAME ": initialized - tb_period = %lld\n", tb_period);
+	pr_info(DEVNAME ": initialized - tb_period = %lld\n", tb_period);
+
 	return 0;
+
+out_class:
+	class_destroy(tb_class);
+out_chrdev:
+	unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME);
+
+	return err;
 }
 
 static void __exit sbprof_tb_cleanup(void)
 {
+	device_destroy(tb_class, MKDEV(SBPROF_TB_MAJOR, 0));
 	unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME);
+	class_destroy(tb_class);
 }
 
 module_init(sbprof_tb_init);
 module_exit(sbprof_tb_cleanup);
+
+MODULE_ALIAS_CHARDEV_MAJOR(SBPROF_TB_MAJOR);
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
diff --git a/arch/mips/sibyte/sb1250/setup.c b/arch/mips/sibyte/sb1250/setup.c
index 1cb042eab72..87188f0f6fb 100644
--- a/arch/mips/sibyte/sb1250/setup.c
+++ b/arch/mips/sibyte/sb1250/setup.c
@@ -16,6 +16,7 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/reboot.h>
 #include <linux/string.h>
@@ -32,6 +33,7 @@ unsigned int soc_pass;
 unsigned int soc_type;
 unsigned int periph_rev;
 unsigned int zbbus_mhz;
+EXPORT_SYMBOL(zbbus_mhz);
 
 static char *soc_str;
 static char *pass_str;
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 7ec4ac77c0f..e4006dc087c 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -225,6 +225,22 @@ static struct cpu_spec cpu_specs[] = {
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.platform		= "ppc970",
 	},
+	{	/* PPC970MP DD1.0 - no DEEPNAP, use regular 970 init */
+		.pvr_mask		= 0xffffffff,
+		.pvr_value		= 0x00440100,
+		.cpu_name		= "PPC970MP",
+		.cpu_features		= CPU_FTRS_PPC970,
+		.cpu_user_features	= COMMON_USER_POWER4 |
+			PPC_FEATURE_HAS_ALTIVEC_COMP,
+		.icache_bsize		= 128,
+		.dcache_bsize		= 128,
+		.num_pmcs		= 8,
+		.cpu_setup		= __setup_cpu_ppc970,
+		.cpu_restore		= __restore_cpu_ppc970,
+		.oprofile_cpu_type	= "ppc64/970MP",
+		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.platform		= "ppc970",
+	},
 	{	/* PPC970MP */
 		.pvr_mask		= 0xffff0000,
 		.pvr_value		= 0x00440000,
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index ea6fd552c7e..91b443c9a48 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -916,7 +916,7 @@ EXPORT_SYMBOL_GPL(of_irq_map_raw);
 static int of_irq_map_oldworld(struct device_node *device, int index,
 			       struct of_irq *out_irq)
 {
-	const u32 *ints;
+	const u32 *ints = NULL;
 	int intlen;
 
 	/*
diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c
index e5d81916687..8aa9a93e2aa 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c
@@ -55,9 +55,9 @@ static int mpc834x_usb_cfg(void)
 	struct device_node *np = NULL;
 	int port0_is_dr = 0;
 
-	if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL)
+	if ((np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr")) != NULL)
 		port0_is_dr = 1;
-	if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL){
+	if ((np = of_find_compatible_node(NULL, "usb", "fsl-usb2-mph")) != NULL){
 		if (port0_is_dr) {
 			printk(KERN_WARNING
 				"There is only one USB port on PB board! \n");
@@ -103,8 +103,8 @@ static int mpc834x_usb_cfg(void)
 		return -1;
 
 	/*
-	 * if MDS board is plug into PIB board,
-	 * force to use the PHY on MDS board
+	 * if Processor Board is plugged into PIB board,
+	 * force to use the PHY on Processor Board
 	 */
 	bcsr5 = in_8(bcsr_regs + 5);
 	if (!(bcsr5 & BCSR5_INT_USB))
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index eb661ccf2da..e764c0aced8 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -47,6 +47,7 @@ config MPC85xx
 	bool
 	select PPC_UDBG_16550
 	select PPC_INDIRECT_PCI
+	select SERIAL_8250_SHARE_IRQ if SERIAL_8250
 	default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS || MPC85xx_MDS
 
 config PPC_INDIRECT_PCI_BE
diff --git a/arch/powerpc/platforms/celleb/scc_epci.c b/arch/powerpc/platforms/celleb/scc_epci.c
index c11b39c3776..fb23d53eb09 100644
--- a/arch/powerpc/platforms/celleb/scc_epci.c
+++ b/arch/powerpc/platforms/celleb/scc_epci.c
@@ -43,11 +43,34 @@
 
 #define iob()  __asm__ __volatile__("eieio; sync":::"memory")
 
+static inline volatile void __iomem *celleb_epci_get_epci_base(
+					struct pci_controller *hose)
+{
+	/*
+	 * Note:
+	 * Celleb epci uses cfg_addr as a base address for
+	 * epci control registers.
+	 */
+
+	return hose->cfg_addr;
+}
+
+static inline volatile void __iomem *celleb_epci_get_epci_cfg(
+					struct pci_controller *hose)
+{
+	/*
+	 * Note:
+	 * Celleb epci uses cfg_data as a base address for
+	 * configuration area for epci devices.
+	 */
+
+	return hose->cfg_data;
+}
 
 #if 0 /* test code for epci dummy read */
 static void celleb_epci_dummy_read(struct pci_dev *dev)
 {
-	void __iomem *epci_base;
+	volatile void __iomem *epci_base;
 	struct device_node *node;
 	struct pci_controller *hose;
 	u32 val;
@@ -58,7 +81,7 @@ static void celleb_epci_dummy_read(struct pci_dev *dev)
 	if (!hose)
 		return;
 
-	epci_base = hose->cfg_addr;
+	epci_base = celleb_epci_get_epci_base(hose);
 
 	val = in_be32(epci_base + SCC_EPCI_WATRP);
 	iosync();
@@ -70,19 +93,20 @@ static void celleb_epci_dummy_read(struct pci_dev *dev)
 static inline void clear_and_disable_master_abort_interrupt(
 					struct pci_controller *hose)
 {
-	void __iomem *addr;
-	addr = hose->cfg_addr + PCI_COMMAND;
-	out_be32(addr, in_be32(addr) | (PCI_STATUS_REC_MASTER_ABORT << 16));
+	volatile void __iomem *epci_base, *reg;
+	epci_base = celleb_epci_get_epci_base(hose);
+	reg = epci_base + PCI_COMMAND;
+	out_be32(reg, in_be32(reg) | (PCI_STATUS_REC_MASTER_ABORT << 16));
 }
 
 static int celleb_epci_check_abort(struct pci_controller *hose,
-				   void __iomem *addr)
+				   volatile void __iomem *addr)
 {
-	void __iomem *reg, *epci_base;
+	volatile void __iomem *reg, *epci_base;
 	u32 val;
 
 	iob();
-	epci_base = hose->cfg_addr;
+	epci_base = celleb_epci_get_epci_base(hose);
 
 	reg = epci_base + PCI_COMMAND;
 	val = in_be32(reg);
@@ -108,20 +132,21 @@ static int celleb_epci_check_abort(struct pci_controller *hose,
 	return PCIBIOS_SUCCESSFUL;
 }
 
-static void __iomem *celleb_epci_make_config_addr(struct pci_controller *hose,
+static volatile void __iomem *celleb_epci_make_config_addr(
+					struct pci_controller *hose,
 					unsigned int devfn, int where)
 {
-	void __iomem *addr;
+	volatile void __iomem *addr;
 	struct pci_bus *bus = hose->bus;
 
 	if (bus->self)
-		addr = hose->cfg_data +
+		addr = celleb_epci_get_epci_cfg(hose) +
 		       (((bus->number & 0xff) << 16)
 		        | ((devfn & 0xff) << 8)
 		        | (where & 0xff)
 		        | 0x01000000);
 	else
-		addr = hose->cfg_data +
+		addr = celleb_epci_get_epci_cfg(hose) +
 		       (((devfn & 0xff) << 8) | (where & 0xff));
 
 	pr_debug("EPCI: config_addr = 0x%p\n", addr);
@@ -132,7 +157,7 @@ static void __iomem *celleb_epci_make_config_addr(struct pci_controller *hose,
 static int celleb_epci_read_config(struct pci_bus *bus,
 			unsigned int devfn, int where, int size, u32 * val)
 {
-	void __iomem *addr;
+	volatile void __iomem *epci_base, *addr;
 	struct device_node *node;
 	struct pci_controller *hose;
 
@@ -142,13 +167,14 @@ static int celleb_epci_read_config(struct pci_bus *bus,
 	node = (struct device_node *)bus->sysdata;
 	hose = pci_find_hose_for_OF_device(node);
 
-	if (!hose->cfg_data)
+	if (!celleb_epci_get_epci_cfg(hose))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	if (bus->number == hose->first_busno && devfn == 0) {
 		/* EPCI controller self */
 
-		addr = hose->cfg_addr + where;
+		epci_base = celleb_epci_get_epci_base(hose);
+		addr = epci_base + where;
 
 		switch (size) {
 		case 1:
@@ -185,7 +211,7 @@ static int celleb_epci_read_config(struct pci_bus *bus,
 	}
 
 	pr_debug("EPCI: "
-		 "addr=0x%lx, devfn=0x%x, where=0x%x, size=0x%x, val=0x%x\n",
+		 "addr=0x%p, devfn=0x%x, where=0x%x, size=0x%x, val=0x%x\n",
 		 addr, devfn, where, size, *val);
 
 	return celleb_epci_check_abort(hose, NULL);
@@ -194,7 +220,7 @@ static int celleb_epci_read_config(struct pci_bus *bus,
 static int celleb_epci_write_config(struct pci_bus *bus,
 			unsigned int devfn, int where, int size, u32 val)
 {
-	void __iomem *addr;
+	volatile void __iomem *epci_base, *addr;
 	struct device_node *node;
 	struct pci_controller *hose;
 
@@ -204,13 +230,15 @@ static int celleb_epci_write_config(struct pci_bus *bus,
 	node = (struct device_node *)bus->sysdata;
 	hose = pci_find_hose_for_OF_device(node);
 
-	if (!hose->cfg_data)
+
+	if (!celleb_epci_get_epci_cfg(hose))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	if (bus->number == hose->first_busno && devfn == 0) {
 		/* EPCI controller self */
 
-		addr = hose->cfg_addr + where;
+		epci_base = celleb_epci_get_epci_base(hose);
+		addr = epci_base + where;
 
 		switch (size) {
 		case 1:
@@ -258,10 +286,10 @@ struct pci_ops celleb_epci_ops = {
 static int __devinit celleb_epci_init(struct pci_controller *hose)
 {
 	u32 val;
-	void __iomem *reg, *epci_base;
+	volatile void __iomem *reg, *epci_base;
 	int hwres = 0;
 
-	epci_base = hose->cfg_addr;
+	epci_base = celleb_epci_get_epci_base(hose);
 
 	/* PCI core reset(Internal bus and PCI clock) */
 	reg = epci_base + SCC_EPCI_CKCTRL;
@@ -382,6 +410,18 @@ int __devinit celleb_setup_epci(struct device_node *node,
 
 	pr_debug("PCI: celleb_setup_epci()\n");
 
+	/*
+	 * Note:
+	 * Celleb epci uses cfg_addr and cfg_data member of
+	 * pci_controller structure in irregular way.
+	 *
+	 * cfg_addr is used to map for control registers of
+	 * celleb epci.
+	 *
+	 * cfg_data is used for configuration area of devices
+	 * on Celleb epci buses.
+	 */
+
 	if (of_address_to_resource(node, 0, &r))
 		goto error;
 	hose->cfg_addr = ioremap(r.start, (r.end - r.start + 1));
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 886c522d78e..3410bcbc9db 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -79,6 +79,7 @@ config LINKSTATION
 	select MPIC
 	select FSL_SOC
 	select PPC_UDBG_16550 if SERIAL_8250
+	select DEFAULT_UIMAGE
 	help
 	  Select LINKSTATION if configuring for one of PPC- (MPC8241)
 	  based NAS systems from Buffalo Technology. So far only
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index c29a6a064d2..24cc50c1774 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -810,6 +810,7 @@ core99_ata100_enable(struct device_node *node, long value)
 	unsigned long flags;
 	struct pci_dev *pdev = NULL;
 	u8 pbus, pid;
+	int rc;
 
 	if (uninorth_rev < 0x24)
 		return -ENODEV;
@@ -828,7 +829,9 @@ core99_ata100_enable(struct device_node *node, long value)
 			pdev = pci_find_slot(pbus, pid);
 		if (pdev == NULL)
 			return 0;
-		pci_enable_device(pdev);
+		rc = pci_enable_device(pdev);
+		if (rc)
+			return rc;
 		pci_set_master(pdev);
 	}
 	return 0;
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index f42475b27c1..6fbac308ded 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -1191,8 +1191,11 @@ void __init pmac_pcibios_after_init(void)
 	 * -- BenH
 	 */
 	for_each_pci_dev(dev) {
-		if ((dev->class >> 16) == PCI_BASE_CLASS_STORAGE)
-			pci_enable_device(dev);
+		if ((dev->class >> 16) != PCI_BASE_CLASS_STORAGE)
+			continue;
+		if (pci_enable_device(dev))
+			printk(KERN_WARNING
+			       "pci: Failed to enable %s\n", pci_name(dev));
 	}
 #endif /* CONFIG_BLK_DEV_IDE */
 
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 0183e5fbaf4..bf299b66f3f 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -218,7 +218,7 @@ Commands:\n\
 "  ss	stop execution on all spus\n\
   sr	restore execution on stopped spus\n\
   sf  #	dump spu fields for spu # (in hex)\n\
-  sd  #	dump spu local store for spu # (in hex)\
+  sd  #	dump spu local store for spu # (in hex)\n\
   sdi #	disassemble spu local store for spu # (in hex)\n"
 #endif
 "  S	print special registers\n\
diff --git a/arch/x86_64/kernel/early-quirks.c b/arch/x86_64/kernel/early-quirks.c
index 8047ea8c2ab..dec587b293b 100644
--- a/arch/x86_64/kernel/early-quirks.c
+++ b/arch/x86_64/kernel/early-quirks.c
@@ -30,11 +30,8 @@ static void via_bugs(void)
 
 #ifdef CONFIG_ACPI
 
-static int nvidia_hpet_detected __initdata;
-
 static int __init nvidia_hpet_check(struct acpi_table_header *header)
 {
-	nvidia_hpet_detected = 1;
 	return 0;
 }
 #endif
@@ -52,11 +49,7 @@ static void nvidia_bugs(void)
 	if (acpi_use_timer_override)
 		return;
 
-	nvidia_hpet_detected = 0;
-	if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check))
-		return;
-
-	if (nvidia_hpet_detected == 0) {
+	if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check)) {
 		acpi_skip_timer_override = 1;
 		printk(KERN_INFO "Nvidia board "
 		       "detected. Ignoring ACPI "