Merge branch 'master'

39 files changed, 278 insertions, 359 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index df338c5cc91..80d114a3a83 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -83,6 +83,12 @@ config GENERIC_TBSYNC
 	default y if PPC32 && SMP
 	default n
 
+config DEFAULT_UIMAGE
+	bool
+	help
+	  Used to allow a board to specify it wants a uImage built by default
+	default n
+
 menu "Processor support"
 choice
 	prompt "Processor Type"
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 44dd82b791d..5500ab55d04 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -142,6 +142,7 @@ drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/
 # Default to zImage, override when needed
 defaultimage-y			:= zImage
 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
+defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
 KBUILD_IMAGE := $(defaultimage-y)
 all: $(KBUILD_IMAGE)
 
@@ -167,6 +168,8 @@ endef
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
+
+archmrproper:
 	$(Q)rm -rf arch/$(ARCH)/include
 
 archprepare: checkbin
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index c287980b7e6..80e9fe2632b 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -12,10 +12,10 @@ endif
 
 obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
 				   irq.o align.o signal_32.o pmc.o vdso.o \
-				   init_task.o process.o
+				   init_task.o process.o systbl.o
 obj-y				+= vdso32/
 obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
-				   signal_64.o ptrace32.o systbl.o \
+				   signal_64.o ptrace32.o \
 				   paca.o cpu_setup_power4.o \
 				   firmware.o sysfs.o idle_64.o
 obj-$(CONFIG_PPC64)		+= vdso64/
@@ -46,7 +46,7 @@ extra-$(CONFIG_8xx)		:= head_8xx.o
 extra-y				+= vmlinux.lds
 
 obj-y				+= time.o prom.o traps.o setup-common.o udbg.o
-obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o systbl.o
+obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o
 obj-$(CONFIG_PPC64)		+= misc_64.o dma_64.o iommu.o
 obj-$(CONFIG_PPC_MULTIPLATFORM)	+= prom_init.o
 obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
index e4362dfa37f..340730fb8c9 100644
--- a/arch/powerpc/kernel/fpu.S
+++ b/arch/powerpc/kernel/fpu.S
@@ -66,7 +66,7 @@ _GLOBAL(load_up_fpu)
 #else
 	ld	r4,PACACURRENT(r13)
 	addi	r5,r4,THREAD		/* Get THREAD */
-	ld	r4,THREAD_FPEXC_MODE(r5)
+	lwz	r4,THREAD_FPEXC_MODE(r5)
 	ori	r12,r12,MSR_FP
 	or	r12,r12,r4
 	std	r12,_MSR(r1)
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 30826846634..2b03a09fe5e 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -157,8 +157,7 @@ _GLOBAL(__secondary_hold)
 	SET_REG_IMMEDIATE(r4, .hmt_init)
 	mtctr	r4
 	bctr
-#else
-#ifdef CONFIG_SMP
+#elif defined(CONFIG_SMP) || defined(CONFIG_KEXEC)
 	LOAD_REG_IMMEDIATE(r4, .pSeries_secondary_smp_init)
 	mtctr	r4
 	mr	r3,r24
@@ -166,7 +165,6 @@ _GLOBAL(__secondary_hold)
 #else
 	BUG_OPCODE
 #endif
-#endif
 
 /* This value is used to mark exception frames on the stack. */
 	.section ".toc","aw"
@@ -749,11 +747,12 @@ iSeries_secondary_smp_loop:
 
 	.globl decrementer_iSeries_masked
 decrementer_iSeries_masked:
+	/* We may not have a valid TOC pointer in here. */
 	li	r11,1
 	ld	r12,PACALPPACAPTR(r13)
 	stb	r11,LPPACADECRINT(r12)
-	LOAD_REG_ADDRBASE(r12,tb_ticks_per_jiffy)
-	lwz	r12,ADDROFF(tb_ticks_per_jiffy)(r12)
+	LOAD_REG_IMMEDIATE(r12, tb_ticks_per_jiffy)
+	lwz	r12,0(r12)
 	mtspr	SPRN_DEC,r12
 	/* fall through */
 
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 4d9b4388918..946f3219fd2 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -334,9 +334,6 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 
 	spin_unlock_irqrestore(&(tbl->it_lock), flags);
 
-	/* Make sure updates are seen by hardware */
-	mb();
-
 	DBG("mapped %d elements:\n", outcount);
 
 	/* For the sake of iommu_unmap_sg, we clear out the length in the
@@ -347,6 +344,10 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 		outs->dma_address = DMA_ERROR_CODE;
 		outs->dma_length = 0;
 	}
+
+	/* Make sure updates are seen by hardware */
+	mb();
+
 	return outcount;
 
  failure:
@@ -358,6 +359,8 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 			npages = (PAGE_ALIGN(s->dma_address + s->dma_length) - vaddr)
 				>> PAGE_SHIFT;
 			__iommu_free(tbl, vaddr, npages);
+			s->dma_address = DMA_ERROR_CODE;
+			s->dma_length = 0;
 		}
 	}
 	spin_unlock_irqrestore(&(tbl->it_lock), flags);
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index f970ace208d..c7a799a0951 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -134,7 +134,6 @@ static int __init add_legacy_soc_port(struct device_node *np,
 	return add_legacy_port(np, -1, UPIO_MEM, addr, addr, NO_IRQ, flags);
 }
 
-#ifdef CONFIG_ISA
 static int __init add_legacy_isa_port(struct device_node *np,
 				      struct device_node *isa_brg)
 {
@@ -168,7 +167,6 @@ static int __init add_legacy_isa_port(struct device_node *np,
 	return add_legacy_port(np, index, UPIO_PORT, reg[1], taddr, NO_IRQ, UPF_BOOT_AUTOCONF);
 
 }
-#endif
 
 #ifdef CONFIG_PCI
 static int __init add_legacy_pci_port(struct device_node *np,
@@ -276,7 +274,6 @@ void __init find_legacy_serial_ports(void)
 		of_node_put(soc);
 	}
 
-#ifdef CONFIG_ISA
 	/* First fill our array with ISA ports */
 	for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
 		struct device_node *isa = of_get_parent(np);
@@ -287,7 +284,6 @@ void __init find_legacy_serial_ports(void)
 		}
 		of_node_put(isa);
 	}
-#endif
 
 #ifdef CONFIG_PCI
 	/* Next, try to locate PCI ports */
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1ae96a8ed7e..e789fef4eb8 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -341,7 +341,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	const char *system_id = "";
 	unsigned int *lp_index_ptr, lp_index = 0;
 	struct device_node *rtas_node;
-	int *lrdrp;
+	int *lrdrp = NULL;
 
 	rootdn = find_path_device("/");
 	if (rootdn) {
@@ -362,7 +362,9 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	seq_printf(m, "partition_id=%d\n", (int)lp_index);
 
 	rtas_node = find_path_device("/rtas");
-	lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
+	if (rtas_node)
+		lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
+		                            NULL);
 
 	if (lrdrp == NULL) {
 		partition_potential_processors = vdso_data->processorCount;
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index d9a459c144d..8a731ea877b 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -79,15 +79,8 @@ EXPORT_SYMBOL(sys_sigreturn);
 EXPORT_SYMBOL(strcpy);
 EXPORT_SYMBOL(strncpy);
 EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strnlen);
 EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strncmp);
 EXPORT_SYMBOL(strcasecmp);
 
 EXPORT_SYMBOL(csum_partial);
@@ -185,9 +178,6 @@ EXPORT_SYMBOL(adb_try_handler_change);
 EXPORT_SYMBOL(cuda_request);
 EXPORT_SYMBOL(cuda_poll);
 #endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_PPC_PMAC
-EXPORT_SYMBOL(sys_ctrler);
-#endif
 #ifdef CONFIG_VT
 EXPORT_SYMBOL(kd_mksound);
 #endif
@@ -205,7 +195,6 @@ EXPORT_SYMBOL(__lshrdi3);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(memset);
 EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(memscan);
 EXPORT_SYMBOL(memcmp);
 EXPORT_SYMBOL(memchr);
 
@@ -214,7 +203,6 @@ EXPORT_SYMBOL(screen_info);
 #endif
 
 #ifdef CONFIG_PPC32
-EXPORT_SYMBOL(__delay);
 EXPORT_SYMBOL(timer_interrupt);
 EXPORT_SYMBOL(irq_desc);
 EXPORT_SYMBOL(tb_ticks_per_jiffy);
@@ -222,10 +210,6 @@ EXPORT_SYMBOL(console_drivers);
 EXPORT_SYMBOL(cacheable_memcpy);
 #endif
 
-EXPORT_SYMBOL(__up);
-EXPORT_SYMBOL(__down);
-EXPORT_SYMBOL(__down_interruptible);
-
 #ifdef  CONFIG_8xx
 EXPORT_SYMBOL(cpm_install_handler);
 EXPORT_SYMBOL(cpm_free_handler);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index d50c8df0183..294832a7e0a 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -491,7 +491,12 @@ void __init finish_device_tree(void)
 	size = 16;
 	finish_node(allnodes, &size, 1);
 	size -= 16;
-	end = start = (unsigned long) __va(lmb_alloc(size, 128));
+
+	if (0 == size)
+		end = start = 0;
+	else
+		end = start = (unsigned long)__va(lmb_alloc(size, 128));
+
 	finish_node(allnodes, &end, 0);
 	BUG_ON(end != start + size);
 
@@ -1398,8 +1403,8 @@ struct device_node *of_find_node_by_name(struct device_node *from,
 
 	read_lock(&devtree_lock);
 	np = from ? from->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (np->name != 0 && strcasecmp(np->name, name) == 0
+	for (; np != NULL; np = np->allnext)
+		if (np->name != NULL && strcasecmp(np->name, name) == 0
 		    && of_node_get(np))
 			break;
 	if (from)
@@ -1917,3 +1922,30 @@ int prom_update_property(struct device_node *np,
 
 	return 0;
 }
+
+#ifdef CONFIG_KEXEC
+/* We may have allocated the flat device tree inside the crash kernel region
+ * in prom_init. If so we need to move it out into regular memory. */
+void kdump_move_device_tree(void)
+{
+	unsigned long start, end;
+	struct boot_param_header *new;
+
+	start = __pa((unsigned long)initial_boot_params);
+	end = start + initial_boot_params->totalsize;
+
+	if (end < crashk_res.start || start > crashk_res.end)
+		return;
+
+	new = (struct boot_param_header*)
+		__va(lmb_alloc(initial_boot_params->totalsize, PAGE_SIZE));
+
+	memcpy(new, initial_boot_params, initial_boot_params->totalsize);
+
+	initial_boot_params = new;
+
+	DBG("Flat device tree blob moved to %p\n", initial_boot_params);
+
+	/* XXX should we unreserve the old DT? */
+}
+#endif /* CONFIG_KEXEC */
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7881ec96ef1..ec7153f4d47 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2098,6 +2098,10 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 	 */
 	prom_init_stdout();
 
+	/* Bail if this is a kdump kernel. */
+	if (PHYSICAL_START > 0)
+		prom_panic("Error: You can't boot a kdump kernel from OF!\n");
+
 	/*
 	 * Check for an initrd
 	 */
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index a8099c80615..3934c227549 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -465,8 +465,10 @@ u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 	if (parent == NULL)
 		return NULL;
 	bus = of_match_bus(parent);
-	if (strcmp(bus->name, "pci"))
+	if (strcmp(bus->name, "pci")) {
+		of_node_put(parent);
 		return NULL;
+	}
 	bus->count_cells(dev, &na, &ns);
 	of_node_put(parent);
 	if (!OF_CHECK_COUNTS(na, ns))
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 7fe4a5c944c..b5b2add7ad1 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -22,6 +22,7 @@
 
 #include <asm/prom.h>
 #include <asm/rtas.h>
+#include <asm/hvcall.h>
 #include <asm/semaphore.h>
 #include <asm/machdep.h>
 #include <asm/page.h>
@@ -565,6 +566,7 @@ static int ibm_suspend_me_token = RTAS_UNKNOWN_SERVICE;
 #ifdef CONFIG_PPC_PSERIES
 static void rtas_percpu_suspend_me(void *info)
 {
+	int i;
 	long rc;
 	long flags;
 	struct rtas_suspend_me_data *data =
@@ -587,18 +589,16 @@ static void rtas_percpu_suspend_me(void *info)
 
 	if (rc == H_Continue) {
 		data->waiting = 0;
-		rtas_call(ibm_suspend_me_token, 0, 1,
-			  data->args->args);
+		data->args->args[data->args->nargs] =
+			rtas_call(ibm_suspend_me_token, 0, 1, NULL);
+		for_each_cpu(i)
+			plpar_hcall_norets(H_PROD,i);
 	} else {
 		data->waiting = -EBUSY;
 		printk(KERN_ERR "Error on H_Join hypervisor call\n");
 	}
 
 out:
-	/* before we restore interrupts, make sure we don't
-	 * generate a spurious soft lockup errors
-	 */
-	touch_softlockup_watchdog();
 	local_irq_restore(flags);
 	return;
 }
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 50500093c97..aaf384c3f04 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -672,8 +672,7 @@ static void rtas_flash_firmware(int reboot_type)
 static void remove_flash_pde(struct proc_dir_entry *dp)
 {
 	if (dp) {
-		if (dp->data != NULL)
-			kfree(dp->data);
+		kfree(dp->data);
 		dp->owner = NULL;
 		remove_proc_entry(dp->name, dp->parent);
 	}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index e29b275e09e..f96c49b03ba 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -311,8 +311,6 @@ void smp_release_cpus(void)
 
 	DBG(" <- smp_release_cpus()\n");
 }
-#else
-#define smp_release_cpus()
 #endif /* CONFIG_SMP || CONFIG_KEXEC */
 
 /*
@@ -398,6 +396,9 @@ void __init setup_system(void)
 {
 	DBG(" -> setup_system()\n");
 
+#ifdef CONFIG_KEXEC
+	kdump_move_device_tree();
+#endif
 	/*
 	 * Unflatten the device-tree passed by prom_init or kexec
 	 */
@@ -470,10 +471,12 @@ void __init setup_system(void)
 	check_smt_enabled();
 	smp_setup_cpu_maps();
 
+#ifdef CONFIG_SMP
 	/* Release secondary cpus out of their spinloops at 0x60 now that
 	 * we can map physical -> logical CPU ids
 	 */
 	smp_release_cpus();
+#endif
 
 	printk("Starting Linux PPC64 %s\n", system_utsname.version);
 
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 3747ab0dac3..bd837b5dbf0 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -142,11 +142,7 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 	return 0;
 }
 
-static inline compat_uptr_t to_user_ptr(void *kp)
-{
-	return (compat_uptr_t)(u64)kp;
-}
-
+#define to_user_ptr(p)		ptr_to_compat(p)
 #define from_user_ptr(p)	compat_ptr(p)
 
 static inline int save_general_regs(struct pt_regs *regs,
@@ -213,8 +209,8 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 	return 0;
 }
 
-#define to_user_ptr(p)		(p)
-#define from_user_ptr(p)	(p)
+#define to_user_ptr(p)		((unsigned long)(p))
+#define from_user_ptr(p)	((void __user *)(p))
 
 static inline int save_general_regs(struct pt_regs *regs,
 		struct mcontext __user *frame)
@@ -254,11 +250,9 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs);
  */
 long sys_sigsuspend(old_sigset_t mask)
 {
-	sigset_t saveset;
-
 	mask &= _BLOCKABLE;
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	siginitset(&current->blocked, mask);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
@@ -528,7 +522,7 @@ long compat_sys_rt_sigaction(int sig, const struct sigaction32 __user *act,
 
 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
 	if (!ret && oact) {
-		ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
+		ret = put_user(to_user_ptr(old_ka.sa.sa_handler), &oact->sa_handler);
 		ret |= put_sigset_t(&oact->sa_mask, &old_ka.sa.sa_mask);
 		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
 	}
@@ -677,8 +671,8 @@ long compat_sys_rt_sigqueueinfo(u32 pid, u32 sig, compat_siginfo_t __user *uinfo
 int compat_sys_sigaltstack(u32 __new, u32 __old, int r5,
 		      int r6, int r7, int r8, struct pt_regs *regs)
 {
-	stack_32_t __user * newstack = (stack_32_t __user *)(long) __new;
-	stack_32_t __user * oldstack = (stack_32_t __user *)(long) __old;
+	stack_32_t __user * newstack = compat_ptr(__new);
+	stack_32_t __user * oldstack = compat_ptr(__old);
 	stack_t uss, uoss;
 	int ret;
 	mm_segment_t old_fs;
@@ -710,7 +704,7 @@ int compat_sys_sigaltstack(u32 __new, u32 __old, int r5,
 	set_fs(old_fs);
 	/* Copy the stack information to the user output buffer */
 	if (!ret && oldstack  &&
-		(put_user((long)uoss.ss_sp, &oldstack->ss_sp) ||
+		(put_user(ptr_to_compat(uoss.ss_sp), &oldstack->ss_sp) ||
 		 __put_user(uoss.ss_flags, &oldstack->ss_flags) ||
 		 __put_user(uoss.ss_size, &oldstack->ss_size)))
 		return -EFAULT;
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index b3193116e68..497a5d3df35 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -60,8 +60,8 @@ struct rt_sigframe {
 	struct ucontext uc;
 	unsigned long _unused[2];
 	unsigned int tramp[TRAMP_SIZE];
-	struct siginfo *pinfo;
-	void *puc;
+	struct siginfo __user *pinfo;
+	void __user *puc;
 	struct siginfo info;
 	/* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
 	char abigap[288];
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index c8458c531b2..13595a64f01 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -540,6 +540,9 @@ int __devinit start_secondary(void *unused)
 	if (smp_ops->take_timebase)
 		smp_ops->take_timebase();
 
+	if (system_state > SYSTEM_BOOTING)
+		per_cpu(last_jiffy, cpu) = get_tb();
+
 	spin_lock(&call_lock);
 	cpu_set(cpu, cpu_online_map);
 	spin_unlock(&call_lock);
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 475249dc235..cd75ab2908f 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -176,7 +176,6 @@ struct timex32 {
 };
 
 extern int do_adjtimex(struct timex *);
-extern void ppc_adjtimex(void);
 
 asmlinkage long compat_sys_adjtimex(struct timex32 __user *utp)
 {
@@ -209,9 +208,6 @@ asmlinkage long compat_sys_adjtimex(struct timex32 __user *utp)
 
 	ret = do_adjtimex(&txc);
 
-	/* adjust the conversion of TB to time of day to track adjtimex */
-	ppc_adjtimex();
-
 	if(put_user(txc.modes, &utp->modes) ||
 	   __put_user(txc.offset, &utp->offset) ||
 	   __put_user(txc.freq, &utp->freq) ||
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index 007b15ee36d..8a9f994ed91 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -36,8 +36,6 @@
 #ifdef CONFIG_PPC64
 #define sys_sigpending	sys_ni_syscall
 #define sys_old_getrlimit sys_ni_syscall
-#else
-#define ppc_rtas	sys_ni_syscall
 #endif
 
 _GLOBAL(sys_call_table)
@@ -323,3 +321,4 @@ SYSCALL(spu_run)
 SYSCALL(spu_create)
 COMPAT_SYS(pselect6)
 COMPAT_SYS(ppoll)
+SYSCALL(unshare)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index c4a294d657b..2a7ddc57937 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -50,6 +50,7 @@
 #include <linux/security.h>
 #include <linux/percpu.h>
 #include <linux/rtc.h>
+#include <linux/jiffies.h>
 
 #include <asm/io.h>
 #include <asm/processor.h>
@@ -99,7 +100,15 @@ EXPORT_SYMBOL(tb_ticks_per_usec);
 unsigned long tb_ticks_per_sec;
 u64 tb_to_xs;
 unsigned tb_to_us;
-unsigned long processor_freq;
+
+#define TICKLEN_SCALE	(SHIFT_SCALE - 10)
+u64 last_tick_len;	/* units are ns / 2^TICKLEN_SCALE */
+u64 ticklen_to_xs;	/* 0.64 fraction */
+
+/* If last_tick_len corresponds to about 1/HZ seconds, then
+   last_tick_len << TICKLEN_SHIFT will be about 2^63. */
+#define TICKLEN_SHIFT	(63 - 30 - TICKLEN_SCALE + SHIFT_HZ)
+
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL_GPL(rtc_lock);
 
@@ -113,10 +122,6 @@ extern unsigned long wall_jiffies;
 extern struct timezone sys_tz;
 static long timezone_offset;
 
-void ppc_adjtimex(void);
-
-static unsigned adjusting_time = 0;
-
 unsigned long ppc_proc_freq;
 unsigned long ppc_tb_freq;
 
@@ -178,8 +183,7 @@ static __inline__ void timer_check_rtc(void)
          */
         if (ppc_md.set_rtc_time && ntp_synced() &&
 	    xtime.tv_sec - last_rtc_update >= 659 &&
-	    abs((xtime.tv_nsec/1000) - (1000000-1000000/HZ)) < 500000/HZ &&
-	    jiffies - wall_jiffies == 1) {
+	    abs((xtime.tv_nsec/1000) - (1000000-1000000/HZ)) < 500000/HZ) {
 		struct rtc_time tm;
 		to_tm(xtime.tv_sec + 1 + timezone_offset, &tm);
 		tm.tm_year -= 1900;
@@ -226,15 +230,14 @@ void do_gettimeofday(struct timeval *tv)
 	if (__USE_RTC()) {
 		/* do this the old way */
 		unsigned long flags, seq;
-		unsigned int sec, nsec, usec, lost;
+		unsigned int sec, nsec, usec;
 
 		do {
 			seq = read_seqbegin_irqsave(&xtime_lock, flags);
 			sec = xtime.tv_sec;
 			nsec = xtime.tv_nsec + tb_ticks_since(tb_last_stamp);
-			lost = jiffies - wall_jiffies;
 		} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
-		usec = nsec / 1000 + lost * (1000000 / HZ);
+		usec = nsec / 1000;
 		while (usec >= 1000000) {
 			usec -= 1000000;
 			++sec;
@@ -248,23 +251,6 @@ void do_gettimeofday(struct timeval *tv)
 
 EXPORT_SYMBOL(do_gettimeofday);
 
-/* Synchronize xtime with do_gettimeofday */ 
-
-static inline void timer_sync_xtime(unsigned long cur_tb)
-{
-#ifdef CONFIG_PPC64
-	/* why do we do this? */
-	struct timeval my_tv;
-
-	__do_gettimeofday(&my_tv, cur_tb);
-
-	if (xtime.tv_sec <= my_tv.tv_sec) {
-		xtime.tv_sec = my_tv.tv_sec;
-		xtime.tv_nsec = my_tv.tv_usec * 1000;
-	}
-#endif
-}
-
 /*
  * There are two copies of tb_to_xs and stamp_xsec so that no
  * lock is needed to access and use these values in
@@ -323,15 +309,30 @@ static __inline__ void timer_recalc_offset(u64 cur_tb)
 {
 	unsigned long offset;
 	u64 new_stamp_xsec;
+	u64 tlen, t2x;
 
 	if (__USE_RTC())
 		return;
+	tlen = current_tick_length();
 	offset = cur_tb - do_gtod.varp->tb_orig_stamp;
-	if ((offset & 0x80000000u) == 0)
-		return;
-	new_stamp_xsec = do_gtod.varp->stamp_xsec
-		+ mulhdu(offset, do_gtod.varp->tb_to_xs);
-	update_gtod(cur_tb, new_stamp_xsec, do_gtod.varp->tb_to_xs);
+	if (tlen == last_tick_len && offset < 0x80000000u) {
+		/* check that we're still in sync; if not, resync */
+		struct timeval tv;
+		__do_gettimeofday(&tv, cur_tb);
+		if (tv.tv_sec <= xtime.tv_sec &&
+		    (tv.tv_sec < xtime.tv_sec ||
+		     tv.tv_usec * 1000 <= xtime.tv_nsec))
+			return;
+	}
+	if (tlen != last_tick_len) {
+		t2x = mulhdu(tlen << TICKLEN_SHIFT, ticklen_to_xs);
+		last_tick_len = tlen;
+	} else
+		t2x = do_gtod.varp->tb_to_xs;
+	new_stamp_xsec = (u64) xtime.tv_nsec * XSEC_PER_SEC;
+	do_div(new_stamp_xsec, 1000000000);
+	new_stamp_xsec += (u64) xtime.tv_sec * XSEC_PER_SEC;
+	update_gtod(cur_tb, new_stamp_xsec, t2x);
 }
 
 #ifdef CONFIG_SMP
@@ -462,13 +463,10 @@ void timer_interrupt(struct pt_regs * regs)
 		write_seqlock(&xtime_lock);
 		tb_last_jiffy += tb_ticks_per_jiffy;
 		tb_last_stamp = per_cpu(last_jiffy, cpu);
-		timer_recalc_offset(tb_last_jiffy);
 		do_timer(regs);
-		timer_sync_xtime(tb_last_jiffy);
+		timer_recalc_offset(tb_last_jiffy);
 		timer_check_rtc();
 		write_sequnlock(&xtime_lock);
-		if (adjusting_time && (time_adjust == 0))
-			ppc_adjtimex();
 	}
 	
 	next_dec = tb_ticks_per_jiffy - ticks;
@@ -492,16 +490,18 @@ void timer_interrupt(struct pt_regs * regs)
 
 void wakeup_decrementer(void)
 {
-	int i;
+	unsigned long ticks;
 
-	set_dec(tb_ticks_per_jiffy);
 	/*
-	 * We don't expect this to be called on a machine with a 601,
-	 * so using get_tbl is fine.
+	 * The timebase gets saved on sleep and restored on wakeup,
+	 * so all we need to do is to reset the decrementer.
 	 */
-	tb_last_stamp = tb_last_jiffy = get_tb();
-	for_each_cpu(i)
-		per_cpu(last_jiffy, i) = tb_last_stamp;
+	ticks = tb_ticks_since(__get_cpu_var(last_jiffy));
+	if (ticks < tb_ticks_per_jiffy)
+		ticks = tb_ticks_per_jiffy - ticks;
+	else
+		ticks = 1;
+	set_dec(ticks);
 }
 
 #ifdef CONFIG_SMP
@@ -541,8 +541,8 @@ int do_settimeofday(struct timespec *tv)
 	time_t wtm_sec, new_sec = tv->tv_sec;
 	long wtm_nsec, new_nsec = tv->tv_nsec;
 	unsigned long flags;
-	long int tb_delta;
-	u64 new_xsec, tb_delta_xs;
+	u64 new_xsec;
+	unsigned long tb_delta;
 
 	if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
 		return -EINVAL;
@@ -563,9 +563,19 @@ int do_settimeofday(struct timespec *tv)
 		first_settimeofday = 0;
 	}
 #endif
+
+	/*
+	 * Subtract off the number of nanoseconds since the
+	 * beginning of the last tick.
+	 * Note that since we don't increment jiffies_64 anywhere other
+	 * than in do_timer (since we don't have a lost tick problem),
+	 * wall_jiffies will always be the same as jiffies,
+	 * and therefore the (jiffies - wall_jiffies) computation
+	 * has been removed.
+	 */
 	tb_delta = tb_ticks_since(tb_last_stamp);
-	tb_delta += (jiffies - wall_jiffies) * tb_ticks_per_jiffy;
-	tb_delta_xs = mulhdu(tb_delta, do_gtod.varp->tb_to_xs);
+	tb_delta = mulhdu(tb_delta, do_gtod.varp->tb_to_xs); /* in xsec */
+	new_nsec -= SCALE_XSEC(tb_delta, 1000000000);
 
 	wtm_sec  = wall_to_monotonic.tv_sec + (xtime.tv_sec - new_sec);
 	wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - new_nsec);
@@ -580,12 +590,12 @@ int do_settimeofday(struct timespec *tv)
 
 	ntp_clear();
 
-	new_xsec = 0;
-	if (new_nsec != 0) {
-		new_xsec = (u64)new_nsec * XSEC_PER_SEC;
+	new_xsec = xtime.tv_nsec;
+	if (new_xsec != 0) {
+		new_xsec *= XSEC_PER_SEC;
 		do_div(new_xsec, NSEC_PER_SEC);
 	}
-	new_xsec += (u64)new_sec * XSEC_PER_SEC - tb_delta_xs;
+	new_xsec += (u64)xtime.tv_sec * XSEC_PER_SEC;
 	update_gtod(tb_last_jiffy, new_xsec, do_gtod.varp->tb_to_xs);
 
 	vdso_data->tz_minuteswest = sys_tz.tz_minuteswest;
@@ -612,10 +622,10 @@ void __init generic_calibrate_decr(void)
 
 	ppc_tb_freq = DEFAULT_TB_FREQ;		/* hardcoded default */
 	node_found = 0;
-	if (cpu != 0) {
+	if (cpu) {
 		fp = (unsigned int *)get_property(cpu, "timebase-frequency",
 						  NULL);
-		if (fp != 0) {
+		if (fp) {
 			node_found = 1;
 			ppc_tb_freq = *fp;
 		}
@@ -626,10 +636,10 @@ void __init generic_calibrate_decr(void)
 
 	ppc_proc_freq = DEFAULT_PROC_FREQ;
 	node_found = 0;
-	if (cpu != 0) {
+	if (cpu) {
 		fp = (unsigned int *)get_property(cpu, "clock-frequency",
 						  NULL);
-		if (fp != 0) {
+		if (fp) {
 			node_found = 1;
 			ppc_proc_freq = *fp;
 		}
@@ -671,7 +681,7 @@ void __init time_init(void)
 	unsigned long flags;
 	unsigned long tm = 0;
 	struct div_result res;
-	u64 scale;
+	u64 scale, x;
 	unsigned shift;
 
         if (ppc_md.time_init != NULL)
@@ -693,11 +703,36 @@ void __init time_init(void)
 	}
 
 	tb_ticks_per_jiffy = ppc_tb_freq / HZ;
-	tb_ticks_per_sec = tb_ticks_per_jiffy * HZ;
+	tb_ticks_per_sec = ppc_tb_freq;
 	tb_ticks_per_usec = ppc_tb_freq / 1000000;
 	tb_to_us = mulhwu_scale_factor(ppc_tb_freq, 1000000);
-	div128_by_32(1024*1024, 0, tb_ticks_per_sec, &res);
-	tb_to_xs = res.result_low;
+
+	/*
+	 * Calculate the length of each tick in ns.  It will not be
+	 * exactly 1e9/HZ unless ppc_tb_freq is divisible by HZ.
+	 * We compute 1e9 * tb_ticks_per_jiffy / ppc_tb_freq,
+	 * rounded up.
+	 */
+	x = (u64) NSEC_PER_SEC * tb_ticks_per_jiffy + ppc_tb_freq - 1;
+	do_div(x, ppc_tb_freq);
+	tick_nsec = x;
+	last_tick_len = x << TICKLEN_SCALE;
+
+	/*
+	 * Compute ticklen_to_xs, which is a factor which gets multiplied
+	 * by (last_tick_len << TICKLEN_SHIFT) to get a tb_to_xs value.
+	 * It is computed as:
+	 * ticklen_to_xs = 2^N / (tb_ticks_per_jiffy * 1e9)
+	 * where N = 64 + 20 - TICKLEN_SCALE - TICKLEN_SHIFT
+	 * so as to give the result as a 0.64 fixed-point fraction.
+	 */
+	div128_by_32(1ULL << (64 + 20 - TICKLEN_SCALE - TICKLEN_SHIFT), 0,
+		     tb_ticks_per_jiffy, &res);
+	div128_by_32(res.result_high, res.result_low, NSEC_PER_SEC, &res);
+	ticklen_to_xs = res.result_low;
+
+	/* Compute tb_to_xs from tick_nsec */
+	tb_to_xs = mulhdu(last_tick_len << TICKLEN_SHIFT, ticklen_to_xs);
 
 	/*
 	 * Compute scale factor for sched_clock.
@@ -724,6 +759,14 @@ void __init time_init(void)
 		tm = get_boot_time();
 
 	write_seqlock_irqsave(&xtime_lock, flags);
+
+	/* If platform provided a timezone (pmac), we correct the time */
+        if (timezone_offset) {
+		sys_tz.tz_minuteswest = -timezone_offset / 60;
+		sys_tz.tz_dsttime = 0;
+		tm -= timezone_offset;
+        }
+
 	xtime.tv_sec = tm;
 	xtime.tv_nsec = 0;
 	do_gtod.varp = &do_gtod.vars[0];
@@ -738,18 +781,11 @@ void __init time_init(void)
 	vdso_data->tb_orig_stamp = tb_last_jiffy;
 	vdso_data->tb_update_count = 0;
 	vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
-	vdso_data->stamp_xsec = xtime.tv_sec * XSEC_PER_SEC;
+	vdso_data->stamp_xsec = (u64) xtime.tv_sec * XSEC_PER_SEC;
 	vdso_data->tb_to_xs = tb_to_xs;
 
 	time_freq = 0;
 
-	/* If platform provided a timezone (pmac), we correct the time */
-        if (timezone_offset) {
-		sys_tz.tz_minuteswest = -timezone_offset / 60;
-		sys_tz.tz_dsttime = 0;
-		xtime.tv_sec -= timezone_offset;
-        }
-
 	last_rtc_update = xtime.tv_sec;
 	set_normalized_timespec(&wall_to_monotonic,
 	                        -xtime.tv_sec, -xtime.tv_nsec);
@@ -759,126 +795,6 @@ void __init time_init(void)
 	set_dec(tb_ticks_per_jiffy);
 }
 
-/* 
- * After adjtimex is called, adjust the conversion of tb ticks
- * to microseconds to keep do_gettimeofday synchronized 
- * with ntpd.
- *
- * Use the time_adjust, time_freq and time_offset computed by adjtimex to 
- * adjust the frequency.
- */
-
-/* #define DEBUG_PPC_ADJTIMEX 1 */
-
-void ppc_adjtimex(void)
-{
-#ifdef CONFIG_PPC64
-	unsigned long den, new_tb_ticks_per_sec, tb_ticks, old_xsec,
-		new_tb_to_xs, new_xsec, new_stamp_xsec;
-	unsigned long tb_ticks_per_sec_delta;
-	long delta_freq, ltemp;
-	struct div_result divres; 
-	unsigned long flags;
-	long singleshot_ppm = 0;
-
-	/*
-	 * Compute parts per million frequency adjustment to
-	 * accomplish the time adjustment implied by time_offset to be
-	 * applied over the elapsed time indicated by time_constant.
-	 * Use SHIFT_USEC to get it into the same units as
-	 * time_freq.
-	 */
-	if ( time_offset < 0 ) {
-		ltemp = -time_offset;
-		ltemp <<= SHIFT_USEC - SHIFT_UPDATE;
-		ltemp >>= SHIFT_KG + time_constant;
-		ltemp = -ltemp;
-	} else {
-		ltemp = time_offset;
-		ltemp <<= SHIFT_USEC - SHIFT_UPDATE;
-		ltemp >>= SHIFT_KG + time_constant;
-	}
-	
-	/* If there is a single shot time adjustment in progress */
-	if ( time_adjust ) {
-#ifdef DEBUG_PPC_ADJTIMEX
-		printk("ppc_adjtimex: ");
-		if ( adjusting_time == 0 )
-			printk("starting ");
-		printk("single shot time_adjust = %ld\n", time_adjust);
-#endif	
-	
-		adjusting_time = 1;
-		
-		/*
-		 * Compute parts per million frequency adjustment
-		 * to match time_adjust
-		 */
-		singleshot_ppm = tickadj * HZ;	
-		/*
-		 * The adjustment should be tickadj*HZ to match the code in
-		 * linux/kernel/timer.c, but experiments show that this is too
-		 * large. 3/4 of tickadj*HZ seems about right
-		 */
-		singleshot_ppm -= singleshot_ppm / 4;
-		/* Use SHIFT_USEC to get it into the same units as time_freq */
-		singleshot_ppm <<= SHIFT_USEC;
-		if ( time_adjust < 0 )
-			singleshot_ppm = -singleshot_ppm;
-	}
-	else {
-#ifdef DEBUG_PPC_ADJTIMEX
-		if ( adjusting_time )
-			printk("ppc_adjtimex: ending single shot time_adjust\n");
-#endif
-		adjusting_time = 0;
-	}
-	
-	/* Add up all of the frequency adjustments */
-	delta_freq = time_freq + ltemp + singleshot_ppm;
-	
-	/*
-	 * Compute a new value for tb_ticks_per_sec based on
-	 * the frequency adjustment
-	 */
-	den = 1000000 * (1 << (SHIFT_USEC - 8));
-	if ( delta_freq < 0 ) {
-		tb_ticks_per_sec_delta = ( tb_ticks_per_sec * ( (-delta_freq) >> (SHIFT_USEC - 8))) / den;
-		new_tb_ticks_per_sec = tb_ticks_per_sec + tb_ticks_per_sec_delta;
-	}
-	else {
-		tb_ticks_per_sec_delta = ( tb_ticks_per_sec * ( delta_freq >> (SHIFT_USEC - 8))) / den;
-		new_tb_ticks_per_sec = tb_ticks_per_sec - tb_ticks_per_sec_delta;
-	}
-	
-#ifdef DEBUG_PPC_ADJTIMEX
-	printk("ppc_adjtimex: ltemp = %ld, time_freq = %ld, singleshot_ppm = %ld\n", ltemp, time_freq, singleshot_ppm);
-	printk("ppc_adjtimex: tb_ticks_per_sec - base = %ld  new = %ld\n", tb_ticks_per_sec, new_tb_ticks_per_sec);
-#endif
-
-	/*
-	 * Compute a new value of tb_to_xs (used to convert tb to
-	 * microseconds) and a new value of stamp_xsec which is the
-	 * time (in 1/2^20 second units) corresponding to
-	 * tb_orig_stamp.  This new value of stamp_xsec compensates
-	 * for the change in frequency (implied by the new tb_to_xs)
-	 * which guarantees that the current time remains the same.
-	 */
-	write_seqlock_irqsave( &xtime_lock, flags );
-	tb_ticks = get_tb() - do_gtod.varp->tb_orig_stamp;
-	div128_by_32(1024*1024, 0, new_tb_ticks_per_sec, &divres);
-	new_tb_to_xs = divres.result_low;
-	new_xsec = mulhdu(tb_ticks, new_tb_to_xs);
-
-	old_xsec = mulhdu(tb_ticks, do_gtod.varp->tb_to_xs);
-	new_stamp_xsec = do_gtod.varp->stamp_xsec + old_xsec - new_xsec;
-
-	update_gtod(do_gtod.varp->tb_orig_stamp, new_stamp_xsec, new_tb_to_xs);
-
-	write_sequnlock_irqrestore( &xtime_lock, flags );
-#endif /* CONFIG_PPC64 */
-}
-
 
 #define FEBRUARY	2
 #define	STARTOFTIME	1970
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 2da65a9c93f..5d29dcca523 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -144,7 +144,7 @@ unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock)
 }
 
 #ifdef CONFIG_PPC_MAPLE
-void udbg_maple_real_putc(unsigned char c)
+void udbg_maple_real_putc(char c)
 {
 	if (udbg_comport) {
 		while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)
diff --git a/arch/powerpc/mm/lmb.c b/arch/powerpc/mm/lmb.c
index 9584608fd76..bbe3eac918e 100644
--- a/arch/powerpc/mm/lmb.c
+++ b/arch/powerpc/mm/lmb.c
@@ -197,6 +197,8 @@ long __init lmb_reserve(unsigned long base, unsigned long size)
 {
 	struct lmb_region *_rgn = &(lmb.reserved);
 
+	BUG_ON(0 == size);
+
 	return lmb_add_region(_rgn, base, size);
 }
 
@@ -227,6 +229,8 @@ unsigned long __init lmb_alloc_base(unsigned long size, unsigned long align,
 	long i, j;
 	unsigned long base = 0;
 
+	BUG_ON(0 == size);
+
 #ifdef CONFIG_PPC32
 	/* On 32-bit, make sure we allocate lowmem */
 	if (max_addr == LMB_ALLOC_ANYWHERE)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 15aac0d78df..550517c2dd4 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -435,17 +435,12 @@ void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
 {
 	clear_page(page);
 
-	if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
-		return;
 	/*
 	 * We shouldnt have to do this, but some versions of glibc
 	 * require it (ld.so assumes zero filled pages are icache clean)
 	 * - Anton
 	 */
-
-	/* avoid an atomic op if possible */
-	if (test_bit(PG_arch_1, &pg->flags))
-		clear_bit(PG_arch_1, &pg->flags);
+	flush_dcache_page(pg);
 }
 EXPORT_SYMBOL(clear_user_page);
 
@@ -469,12 +464,7 @@ void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
 		return;
 #endif
 
-	if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
-		return;
-
-	/* avoid an atomic op if possible */
-	if (test_bit(PG_arch_1, &pg->flags))
-		clear_bit(PG_arch_1, &pg->flags);
+	flush_dcache_page(pg);
 }
 
 void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index 16031b565be..3b998a393e3 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -2,7 +2,7 @@ obj-y			+= interrupt.o iommu.o setup.o spider-pic.o
 obj-y			+= pervasive.o
 
 obj-$(CONFIG_SMP)	+= smp.o
-obj-$(CONFIG_SPU_FS)	+= spufs/ spu-base.o
+obj-$(CONFIG_SPU_FS)	+= spu-base.o spufs/
 
 spu-base-y		+= spu_base.o spu_priv1.o
 
diff --git a/arch/powerpc/platforms/chrp/chrp.h b/arch/powerpc/platforms/chrp/chrp.h
index 3a2057fa314..814f54742e0 100644
--- a/arch/powerpc/platforms/chrp/chrp.h
+++ b/arch/powerpc/platforms/chrp/chrp.h
@@ -5,7 +5,6 @@
 extern void chrp_nvram_init(void);
 extern void chrp_get_rtc_time(struct rtc_time *);
 extern int chrp_set_rtc_time(struct rtc_time *);
-extern void chrp_calibrate_decr(void);
 extern long chrp_time_init(void);
 
 extern void chrp_find_bridges(void);
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 00c52f27ef4..8ef279ad36a 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -204,9 +204,11 @@ static void __init setup_peg2(struct pci_controller *hose, struct device_node *d
 	struct device_node *root = find_path_device("/");
 	struct device_node *rtas;
 
+	of_node_get(root);
 	rtas = of_find_node_by_name (root, "rtas");
 	if (rtas) {
 		hose->ops = &rtas_pci_ops;
+		of_node_put(rtas);
 	} else {
 		printk ("RTAS supporting Pegasos OF not found, please upgrade"
 			" your firmware\n");
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 2dc87aa5962..e1fadbf4915 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -506,7 +506,7 @@ void __init chrp_init(void)
 	ppc_md.halt           = rtas_halt;
 
 	ppc_md.time_init      = chrp_time_init;
-	ppc_md.calibrate_decr = chrp_calibrate_decr;
+	ppc_md.calibrate_decr = generic_calibrate_decr;
 
 	/* this may get overridden with rtas routines later... */
 	ppc_md.set_rtc_time   = chrp_set_rtc_time;
diff --git a/arch/powerpc/platforms/chrp/time.c b/arch/powerpc/platforms/chrp/time.c
index 36a0f97bb7b..78df2e7ca88 100644
--- a/arch/powerpc/platforms/chrp/time.c
+++ b/arch/powerpc/platforms/chrp/time.c
@@ -167,24 +167,3 @@ void chrp_get_rtc_time(struct rtc_time *tm)
 	tm->tm_mon = mon;
 	tm->tm_year = year;
 }
-
-
-void __init chrp_calibrate_decr(void)
-{
-	struct device_node *cpu;
-	unsigned int freq, *fp;
-
-	/*
-	 * The cpu node should have a timebase-frequency property
-	 * to tell us the rate at which the decrementer counts.
-	 */
-	freq = 16666000;		/* hardcoded default */
-	cpu = find_type_devices("cpu");
-	if (cpu != 0) {
-		fp = (unsigned int *)
-			get_property(cpu, "timebase-frequency", NULL);
-		if (fp != 0)
-			freq = *fp;
-	}
-	ppc_tb_freq = freq;
-}
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 558dd069209..34714d3ea69 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -1646,10 +1646,10 @@ static void intrepid_shutdown(struct macio_chip *macio, int sleep_mode)
 		  KL0_SCC_CELL_ENABLE);
 
 	MACIO_BIC(KEYLARGO_FCR1,
-		  /*KL1_USB2_CELL_ENABLE |*/
 		KL1_I2S0_CELL_ENABLE | KL1_I2S0_CLK_ENABLE_BIT |
 		KL1_I2S0_ENABLE | KL1_I2S1_CELL_ENABLE |
-		KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE);
+		KL1_I2S1_CLK_ENABLE_BIT | KL1_I2S1_ENABLE |
+		KL1_EIDE0_ENABLE);
 	if (pmac_mb.board_flags & PMAC_MB_MOBILE)
 		MACIO_BIC(KEYLARGO_FCR1, KL1_UIDE_RESET_N);
 
@@ -2183,7 +2183,7 @@ static struct pmac_mb_def pmac_mb_defs[] = {
 	},
 	{	"PowerMac10,1",			"Mac mini",
 		PMAC_TYPE_UNKNOWN_INTREPID,	intrepid_features,
-		PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER,
+		PMAC_MB_MAY_SLEEP,
 	},
 	{	"iMac,1",			"iMac (first generation)",
 		PMAC_TYPE_ORIG_IMAC,		paddington_features,
@@ -2295,11 +2295,11 @@ static struct pmac_mb_def pmac_mb_defs[] = {
 	},
 	{	"PowerBook5,8",			"PowerBook G4 15\"",
 		PMAC_TYPE_UNKNOWN_INTREPID,	intrepid_features,
-		PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
+		PMAC_MB_MAY_SLEEP  | PMAC_MB_MOBILE,
 	},
 	{	"PowerBook5,9",			"PowerBook G4 17\"",
 		PMAC_TYPE_UNKNOWN_INTREPID,	intrepid_features,
-		PMAC_MB_MAY_SLEEP | PMAC_MB_HAS_FW_POWER | PMAC_MB_MOBILE,
+		PMAC_MB_MAY_SLEEP | PMAC_MB_MOBILE,
 	},
 	{	"PowerBook6,1",			"PowerBook G4 12\"",
 		PMAC_TYPE_UNKNOWN_INTREPID,	intrepid_features,
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index 535c802b369..87eb6bb7f0e 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -1052,8 +1052,7 @@ struct pmac_i2c_bus *pmac_i2c_adapter_to_bus(struct i2c_adapter *adapter)
 }
 EXPORT_SYMBOL_GPL(pmac_i2c_adapter_to_bus);
 
-extern int pmac_i2c_match_adapter(struct device_node *dev,
-				  struct i2c_adapter *adapter)
+int pmac_i2c_match_adapter(struct device_node *dev, struct i2c_adapter *adapter)
 {
 	struct pmac_i2c_bus *bus = pmac_i2c_find_bus(dev);
 
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index f671ed25390..de3f30e6b33 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -136,14 +136,14 @@ static void __init fixup_bus_range(struct device_node *bridge)
 	|(((unsigned int)(off)) & 0xFCUL) \
 	|1UL)
 
-static unsigned long macrisc_cfg_access(struct pci_controller* hose,
+static volatile void __iomem *macrisc_cfg_access(struct pci_controller* hose,
 					       u8 bus, u8 dev_fn, u8 offset)
 {
 	unsigned int caddr;
 
 	if (bus == hose->first_busno) {
 		if (dev_fn < (11 << 3))
-			return 0;
+			return NULL;
 		caddr = MACRISC_CFA0(dev_fn, offset);
 	} else
 		caddr = MACRISC_CFA1(bus, dev_fn, offset);
@@ -154,14 +154,14 @@ static unsigned long macrisc_cfg_access(struct pci_controller* hose,
 	} while (in_le32(hose->cfg_addr) != caddr);
 
 	offset &= has_uninorth ? 0x07 : 0x03;
-	return ((unsigned long)hose->cfg_data) + offset;
+	return hose->cfg_data + offset;
 }
 
 static int macrisc_read_config(struct pci_bus *bus, unsigned int devfn,
 				      int offset, int len, u32 *val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -177,13 +177,13 @@ static int macrisc_read_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		*val = in_8((u8 *)addr);
+		*val = in_8(addr);
 		break;
 	case 2:
-		*val = in_le16((u16 *)addr);
+		*val = in_le16(addr);
 		break;
 	default:
-		*val = in_le32((u32 *)addr);
+		*val = in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -193,7 +193,7 @@ static int macrisc_write_config(struct pci_bus *bus, unsigned int devfn,
 				       int offset, int len, u32 val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -209,16 +209,16 @@ static int macrisc_write_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		out_8((u8 *)addr, val);
-		(void) in_8((u8 *)addr);
+		out_8(addr, val);
+		(void) in_8(addr);
 		break;
 	case 2:
-		out_le16((u16 *)addr, val);
-		(void) in_le16((u16 *)addr);
+		out_le16(addr, val);
+		(void) in_le16(addr);
 		break;
 	default:
-		out_le32((u32 *)addr, val);
-		(void) in_le32((u32 *)addr);
+		out_le32(addr, val);
+		(void) in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -348,25 +348,23 @@ static int u3_ht_skip_device(struct pci_controller *hose,
 		+ (((unsigned int)bus) << 16) \
 		+ 0x01000000UL)
 
-static unsigned long u3_ht_cfg_access(struct pci_controller* hose,
+static volatile void __iomem *u3_ht_cfg_access(struct pci_controller* hose,
 					     u8 bus, u8 devfn, u8 offset)
 {
 	if (bus == hose->first_busno) {
 		/* For now, we don't self probe U3 HT bridge */
 		if (PCI_SLOT(devfn) == 0)
-			return 0;
-		return ((unsigned long)hose->cfg_data) +
-			U3_HT_CFA0(devfn, offset);
+			return NULL;
+		return hose->cfg_data + U3_HT_CFA0(devfn, offset);
 	} else
-		return ((unsigned long)hose->cfg_data) +
-			U3_HT_CFA1(bus, devfn, offset);
+		return hose->cfg_data + U3_HT_CFA1(bus, devfn, offset);
 }
 
 static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
 				    int offset, int len, u32 *val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -400,13 +398,13 @@ static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		*val = in_8((u8 *)addr);
+		*val = in_8(addr);
 		break;
 	case 2:
-		*val = in_le16((u16 *)addr);
+		*val = in_le16(addr);
 		break;
 	default:
-		*val = in_le32((u32 *)addr);
+		*val = in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -416,7 +414,7 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
 				     int offset, int len, u32 val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -442,16 +440,16 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		out_8((u8 *)addr, val);
-		(void) in_8((u8 *)addr);
+		out_8(addr, val);
+		(void) in_8(addr);
 		break;
 	case 2:
-		out_le16((u16 *)addr, val);
-		(void) in_le16((u16 *)addr);
+		out_le16(addr, val);
+		(void) in_le16(addr);
 		break;
 	default:
-		out_le32((u32 *)addr, val);
-		(void) in_le32((u32 *)addr);
+		out_le32((u32 __iomem *)addr, val);
+		(void) in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -476,7 +474,7 @@ static struct pci_ops u3_ht_pci_ops =
 	 |(((unsigned int)(off)) & 0xfcU)	\
 	 |1UL)
 
-static unsigned long u4_pcie_cfg_access(struct pci_controller* hose,
+static volatile void __iomem *u4_pcie_cfg_access(struct pci_controller* hose,
 					u8 bus, u8 dev_fn, int offset)
 {
 	unsigned int caddr;
@@ -492,14 +490,14 @@ static unsigned long u4_pcie_cfg_access(struct pci_controller* hose,
 	} while (in_le32(hose->cfg_addr) != caddr);
 
 	offset &= 0x03;
-	return ((unsigned long)hose->cfg_data) + offset;
+	return hose->cfg_data + offset;
 }
 
 static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
 			       int offset, int len, u32 *val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -515,13 +513,13 @@ static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		*val = in_8((u8 *)addr);
+		*val = in_8(addr);
 		break;
 	case 2:
-		*val = in_le16((u16 *)addr);
+		*val = in_le16(addr);
 		break;
 	default:
-		*val = in_le32((u32 *)addr);
+		*val = in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -531,7 +529,7 @@ static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
 				int offset, int len, u32 val)
 {
 	struct pci_controller *hose;
-	unsigned long addr;
+	volatile void __iomem *addr;
 
 	hose = pci_bus_to_host(bus);
 	if (hose == NULL)
@@ -547,16 +545,16 @@ static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
 	 */
 	switch (len) {
 	case 1:
-		out_8((u8 *)addr, val);
-		(void) in_8((u8 *)addr);
+		out_8(addr, val);
+		(void) in_8(addr);
 		break;
 	case 2:
-		out_le16((u16 *)addr, val);
-		(void) in_le16((u16 *)addr);
+		out_le16(addr, val);
+		(void) in_le16(addr);
 		break;
 	default:
-		out_le32((u32 *)addr, val);
-		(void) in_le32((u32 *)addr);
+		out_le32(addr, val);
+		(void) in_le32(addr);
 		break;
 	}
 	return PCIBIOS_SUCCESSFUL;
@@ -773,8 +771,7 @@ static void __init setup_u3_ht(struct pci_controller* hose)
 	 * the reg address cell, we shall fix that by killing struct
 	 * reg_property and using some accessor functions instead
 	 */
-	hose->cfg_data = (volatile unsigned char *)ioremap(0xf2000000,
-							   0x02000000);
+	hose->cfg_data = ioremap(0xf2000000, 0x02000000);
 
 	/*
 	 * /ht node doesn't expose a "ranges" property, so we "remove"
diff --git a/arch/powerpc/platforms/powermac/pfunc_core.c b/arch/powerpc/platforms/powermac/pfunc_core.c
index c32c623001d..356a739e52b 100644
--- a/arch/powerpc/platforms/powermac/pfunc_core.c
+++ b/arch/powerpc/platforms/powermac/pfunc_core.c
@@ -862,21 +862,28 @@ int pmf_register_irq_client(struct device_node *target,
 		spin_unlock_irqrestore(&pmf_lock, flags);
 		return -ENODEV;
 	}
+	if (list_empty(&func->irq_clients))
+		func->dev->handlers->irq_enable(func);
 	list_add(&client->link, &func->irq_clients);
+	client->func = func;
 	spin_unlock_irqrestore(&pmf_lock, flags);
 
 	return 0;
 }
 EXPORT_SYMBOL_GPL(pmf_register_irq_client);
 
-void pmf_unregister_irq_client(struct device_node *np,
-			      const char *name,
-			      struct pmf_irq_client *client)
+void pmf_unregister_irq_client(struct pmf_irq_client *client)
 {
+	struct pmf_function *func = client->func;
 	unsigned long flags;
 
+	BUG_ON(func == NULL);
+
 	spin_lock_irqsave(&pmf_lock, flags);
+	client->func = NULL;
 	list_del(&client->link);
+	if (list_empty(&func->irq_clients))
+		func->dev->handlers->irq_disable(func);
 	spin_unlock_irqrestore(&pmf_lock, flags);
 }
 EXPORT_SYMBOL_GPL(pmf_unregister_irq_client);
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 89c4c363616..1955462f408 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -82,8 +82,6 @@
 
 #undef SHOW_GATWICK_IRQS
 
-unsigned char drive_info;
-
 int ppc_override_l2cr = 0;
 int ppc_override_l2cr_value;
 int has_l2cache = 0;
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index 6373372932b..e3cbba49fd6 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -333,7 +333,7 @@ void handle_eeh_events (struct eeh_event *event)
 		rc = eeh_reset_device(frozen_pdn, NULL);
 		if (rc)
 			goto hard_fail;
-		pci_walk_bus(frozen_bus, eeh_report_reset, 0);
+		pci_walk_bus(frozen_bus, eeh_report_reset, NULL);
 	}
 
 	/* If all devices reported they can proceed, the re-enable PIO */
@@ -342,11 +342,11 @@ void handle_eeh_events (struct eeh_event *event)
 		rc = eeh_reset_device(frozen_pdn, NULL);
 		if (rc)
 			goto hard_fail;
-		pci_walk_bus(frozen_bus, eeh_report_reset, 0);
+		pci_walk_bus(frozen_bus, eeh_report_reset, NULL);
 	}
 
 	/* Tell all device drivers that they can resume operations */
-	pci_walk_bus(frozen_bus, eeh_report_resume, 0);
+	pci_walk_bus(frozen_bus, eeh_report_resume, NULL);
 
 	return;
 	
@@ -367,7 +367,7 @@ hard_fail:
 	eeh_slot_error_detail(frozen_pdn, 2 /* Permanent Error */);
 
 	/* Notify all devices that they're about to go down. */
-	pci_walk_bus(frozen_bus, eeh_report_failure, 0);
+	pci_walk_bus(frozen_bus, eeh_report_failure, NULL);
 
 	/* Shut down the device drivers for good. */
 	pcibios_remove_pci_devices(frozen_bus);
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 21934784f93..bdaa8aabdaa 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -58,6 +58,7 @@ pcibios_find_pci_bus(struct device_node *dn)
 
 	return find_bus_among_children(pdn->phb->bus, dn);
 }
+EXPORT_SYMBOL_GPL(pcibios_find_pci_bus);
 
 /**
  * pcibios_remove_pci_devices - remove all devices under this bus
@@ -106,6 +107,7 @@ pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
 		}
 	}
 }
+EXPORT_SYMBOL_GPL(pcibios_fixup_new_pci_devices);
 
 static int
 pcibios_pci_config_bridge(struct pci_dev *dev)
@@ -172,3 +174,4 @@ pcibios_add_pci_devices(struct pci_bus * bus)
 			pcibios_pci_config_bridge(dev);
 	}
 }
+EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index da6cebaf72c..9edeca83f43 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -585,7 +585,7 @@ static int pSeries_pci_probe_mode(struct pci_bus *bus)
 static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
 {
 	/* Don't risk a hypervisor call if we're crashing */
-	if (!crash_shutdown) {
+	if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
 		unsigned long vpa = __pa(get_lppaca());
 
 		if (unregister_vpa(hard_smp_processor_id(), vpa)) {
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 8e6b1ed1396..8d710af5075 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -292,7 +292,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 	if (start_cpu == RTAS_UNKNOWN_SERVICE)
 		return 1;
 
-	status = rtas_call(start_cpu, 3, 1, NULL, pcpu, start_here, lcpu);
+	status = rtas_call(start_cpu, 3, 1, NULL, pcpu, start_here, pcpu);
 	if (status != 0) {
 		printk(KERN_ERR "start-cpu failed: %i\n", status);
 		return 0;
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 977de9db875..6298264efe3 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -59,7 +59,7 @@ static unsigned long dart_tablesize;
 static u32 *dart_vbase;
 
 /* Mapped base address for the dart */
-static unsigned int *__iomem dart;
+static unsigned int __iomem *dart;
 
 /* Dummy val that entries are set to when unused */
 static unsigned int dart_emptyval;