Merge branch 'upstream-fixes'

71 files changed, 304 insertions, 364 deletions

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 9006063e736..da677f829f7 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -151,8 +151,13 @@ handle_irq(int irq, struct pt_regs * regs)
 	}
 
 	irq_enter();
+	/*
+	 * __do_IRQ() must be called with IPL_MAX. Note that we do not
+	 * explicitly enable interrupts afterwards - some MILO PALcode
+	 * (namely LX164 one) seems to have severe problems with RTI
+	 * at IPL 0.
+	 */
 	local_irq_disable();
 	__do_IRQ(irq, regs);
-	local_irq_enable();
 	irq_exit();
 }
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 15dc1a0dffb..9f80fa502f8 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -78,7 +78,7 @@ menu "System Type"
 
 choice
 	prompt "ARM system type"
-	default ARCH_RPC
+	default ARCH_VERSATILE
 
 config ARCH_CLPS7500
 	bool "Cirrus-CL-PS7500FE"
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index d7d932c0286..d6bd435a685 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -422,12 +422,14 @@ static int timer_dyn_tick_disable(void)
 void timer_dyn_reprogram(void)
 {
 	struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
+	unsigned long next, seq;
 
-	if (dyn_tick) {
-		write_seqlock(&xtime_lock);
-		if (dyn_tick->state & DYN_TICK_ENABLED)
+	if (dyn_tick && (dyn_tick->state & DYN_TICK_ENABLED)) {
+		next = next_timer_interrupt();
+		do {
+			seq = read_seqbegin(&xtime_lock);
 			dyn_tick->reprogram(next_timer_interrupt() - jiffies);
-		write_sequnlock(&xtime_lock);
+		} while (read_seqretry(&xtime_lock, seq));
 	}
 }
 
diff --git a/arch/arm/mach-ixp4xx/nas100d-power.c b/arch/arm/mach-ixp4xx/nas100d-power.c
index 2bec69bfa71..99d333d7ebd 100644
--- a/arch/arm/mach-ixp4xx/nas100d-power.c
+++ b/arch/arm/mach-ixp4xx/nas100d-power.c
@@ -56,6 +56,9 @@ static int __init nas100d_power_init(void)
 
 static void __exit nas100d_power_exit(void)
 {
+	if (!(machine_is_nas100d()))
+		return;
+
 	free_irq(NAS100D_RB_IRQ, NULL);
 }
 
diff --git a/arch/arm/mm/tlb-v6.S b/arch/arm/mm/tlb-v6.S
index 6f76b89ef46..fd6adde3909 100644
--- a/arch/arm/mm/tlb-v6.S
+++ b/arch/arm/mm/tlb-v6.S
@@ -80,6 +80,7 @@ ENTRY(v6wbi_flush_kern_tlb_range)
 	add	r0, r0, #PAGE_SZ
 	cmp	r0, r1
 	blo	1b
+	mcr	p15, 0, r2, c7, c10, 4		@ data synchronization barrier
 	mov	pc, lr
 
 	.section ".text.init", #alloc, #execinstr
diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c
index ed79ae20e88..dd344f112cf 100644
--- a/arch/h8300/kernel/process.c
+++ b/arch/h8300/kernel/process.c
@@ -45,6 +45,9 @@
 #include <asm/setup.h>
 #include <asm/pgtable.h>
 
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
+
 asmlinkage void ret_from_fork(void);
 
 /*
diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 53bb9a79e27..65656c033d7 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -11,7 +11,7 @@ obj-y	:= process.o semaphore.o signal.o entry.o traps.o irq.o \
 
 obj-y				+= cpu/
 obj-y				+= timers/
-obj-$(CONFIG_ACPI)		+= acpi/
+obj-y				+= acpi/
 obj-$(CONFIG_X86_BIOS_REBOOT)	+= reboot.o
 obj-$(CONFIG_MCA)		+= mca.o
 obj-$(CONFIG_X86_MSR)		+= msr.o
diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index d51c7313cae..7e9ac99354f 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -1,4 +1,4 @@
-obj-y				:= boot.o
+obj-$(CONFIG_ACPI)		+= boot.o
 obj-$(CONFIG_X86_IO_APIC)	+= earlyquirk.o
 obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup.o
 
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 79577f0ace9..f1a21945963 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -1111,9 +1111,6 @@ int __init acpi_boot_table_init(void)
 		disable_acpi();
 		return error;
 	}
-#ifdef __i386__
-	check_acpi_pci();
-#endif
 
 	acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
 
diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index f1b9d2a46da..2e3b643a4dc 100644
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -7,14 +7,22 @@
 #include <linux/pci.h>
 #include <asm/pci-direct.h>
 #include <asm/acpi.h>
+#include <asm/apic.h>
 
 static int __init check_bridge(int vendor, int device)
 {
+#ifdef CONFIG_ACPI
 	/* According to Nvidia all timer overrides are bogus. Just ignore
 	   them all. */
 	if (vendor == PCI_VENDOR_ID_NVIDIA) {
 		acpi_skip_timer_override = 1;
 	}
+#endif
+	if (vendor == PCI_VENDOR_ID_ATI && timer_over_8254 == 1) {
+		timer_over_8254 = 0;
+		printk(KERN_INFO "ATI board detected. Disabling timer routing "
+				"over 8254.\n");
+	}
 	return 0;
 }
 
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 4ecd4b326de..e6bd095ae10 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -278,10 +278,10 @@ void __devinit generic_identify(struct cpuinfo_x86 * c)
 			c->x86_capability[4] = excap;
 			c->x86 = (tfms >> 8) & 15;
 			c->x86_model = (tfms >> 4) & 15;
-			if (c->x86 == 0xf) {
+			if (c->x86 == 0xf)
 				c->x86 += (tfms >> 20) & 0xff;
+			if (c->x86 >= 0x6)
 				c->x86_model += ((tfms >> 16) & 0xF) << 4;
-			} 
 			c->x86_mask = tfms & 15;
 		} else {
 			/* Have CPUID level 0 only - unheard of */
diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c
index e3e42fd6240..c9cad7ba0d2 100644
--- a/arch/i386/kernel/efi.c
+++ b/arch/i386/kernel/efi.c
@@ -70,10 +70,13 @@ static void efi_call_phys_prelog(void)
 {
 	unsigned long cr4;
 	unsigned long temp;
+	struct Xgt_desc_struct *cpu_gdt_descr;
 
 	spin_lock(&efi_rt_lock);
 	local_irq_save(efi_rt_eflags);
 
+	cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
+
 	/*
 	 * If I don't have PSE, I should just duplicate two entries in page
 	 * directory. If I have PSE, I just need to duplicate one entry in
@@ -103,18 +106,17 @@ static void efi_call_phys_prelog(void)
 	 */
 	local_flush_tlb();
 
-	per_cpu(cpu_gdt_descr, 0).address =
-				 __pa(per_cpu(cpu_gdt_descr, 0).address);
-	load_gdt((struct Xgt_desc_struct *)__pa(&per_cpu(cpu_gdt_descr, 0)));
+	cpu_gdt_descr->address = __pa(cpu_gdt_descr->address);
+	load_gdt(cpu_gdt_descr);
 }
 
 static void efi_call_phys_epilog(void)
 {
 	unsigned long cr4;
+	struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
 
-	per_cpu(cpu_gdt_descr, 0).address =
-			(unsigned long)__va(per_cpu(cpu_gdt_descr, 0).address);
-	load_gdt((struct Xgt_desc_struct *)__va(&per_cpu(cpu_gdt_descr, 0)));
+	cpu_gdt_descr->address = __va(cpu_gdt_descr->address);
+	load_gdt(cpu_gdt_descr);
 
 	cr4 = read_cr4();
 
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 235822b3f41..39d9a5fa907 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -51,6 +51,8 @@ static struct { int pin, apic; } ioapic_i8259 = { -1, -1 };
 
 static DEFINE_SPINLOCK(ioapic_lock);
 
+int timer_over_8254 __initdata = 1;
+
 /*
  *	Is the SiS APIC rmw bug present ?
  *	-1 = don't know, 0 = no, 1 = yes
@@ -2267,7 +2269,8 @@ static inline void check_timer(void)
 	apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
 	init_8259A(1);
 	timer_ack = 1;
-	enable_8259A_irq(0);
+	if (timer_over_8254 > 0)
+		enable_8259A_irq(0);
 
 	pin1  = find_isa_irq_pin(0, mp_INT);
 	apic1 = find_isa_irq_apic(0, mp_INT);
@@ -2392,6 +2395,20 @@ void __init setup_IO_APIC(void)
 		print_IO_APIC();
 }
 
+static int __init setup_disable_8254_timer(char *s)
+{
+	timer_over_8254 = -1;
+	return 1;
+}
+static int __init setup_enable_8254_timer(char *s)
+{
+	timer_over_8254 = 2;
+	return 1;
+}
+
+__setup("disable_8254_timer", setup_disable_8254_timer);
+__setup("enable_8254_timer", setup_enable_8254_timer);
+
 /*
  *	Called after all the initialization is done. If we didnt find any
  *	APIC bugs then we can allow the modify fast path
diff --git a/arch/i386/kernel/machine_kexec.c b/arch/i386/kernel/machine_kexec.c
index a912fed4848..f73d7374a2b 100644
--- a/arch/i386/kernel/machine_kexec.c
+++ b/arch/i386/kernel/machine_kexec.c
@@ -116,13 +116,13 @@ static void load_segments(void)
 	__asm__ __volatile__ (
 		"\tljmp $"STR(__KERNEL_CS)",$1f\n"
 		"\t1:\n"
-		"\tmovl $"STR(__KERNEL_DS)",%eax\n"
-		"\tmovl %eax,%ds\n"
-		"\tmovl %eax,%es\n"
-		"\tmovl %eax,%fs\n"
-		"\tmovl %eax,%gs\n"
-		"\tmovl %eax,%ss\n"
-		);
+		"\tmovl $"STR(__KERNEL_DS)",%%eax\n"
+		"\tmovl %%eax,%%ds\n"
+		"\tmovl %%eax,%%es\n"
+		"\tmovl %%eax,%%fs\n"
+		"\tmovl %%eax,%%gs\n"
+		"\tmovl %%eax,%%ss\n"
+		::: "eax", "memory");
 #undef STR
 #undef __STR
 }
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 63f39a7e2c9..be87c5e2ee9 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -357,7 +357,7 @@ static void clear_msr_range(unsigned int base, unsigned int n)
 		wrmsr(base+i, 0, 0);
 }
 
-static inline void write_watchdog_counter(const char *descr)
+static void write_watchdog_counter(const char *descr)
 {
 	u64 count = (u64)cpu_khz * 1000;
 
@@ -544,7 +544,7 @@ void nmi_watchdog_tick (struct pt_regs * regs)
 			 * die_nmi will return ONLY if NOTIFY_STOP happens..
 			 */
 			die_nmi(regs, "NMI Watchdog detected LOCKUP");
-
+	} else {
 		last_irq_sums[cpu] = sum;
 		alert_counter[cpu] = 0;
 	}
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 51e513b4f72..ab62a9f4701 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1599,6 +1599,10 @@ void __init setup_arch(char **cmdline_p)
 	if (efi_enabled)
 		efi_map_memmap();
 
+#ifdef CONFIG_X86_IO_APIC
+	check_acpi_pci();	/* Checks more than just ACPI actually */
+#endif
+
 #ifdef CONFIG_ACPI
 	/*
 	 * Parse the ACPI tables for possible boot-time SMP configuration.
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index a14d594bfbe..9d307475985 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -412,9 +412,9 @@ static int timer_resume(struct sys_device *dev)
 	write_seqlock_irqsave(&xtime_lock, flags);
 	xtime.tv_sec = sec;
 	xtime.tv_nsec = 0;
-	write_sequnlock_irqrestore(&xtime_lock, flags);
-	jiffies += sleep_length;
+	jiffies_64 += sleep_length;
 	wall_jiffies += sleep_length;
+	write_sequnlock_irqrestore(&xtime_lock, flags);
 	if (last_timer->resume)
 		last_timer->resume();
 	cur_timer = last_timer;
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 184678fe783..744fd2f79f6 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.16-rc5
-# Mon Feb 27 16:15:43 2006
+# Thu Mar  2 16:39:10 2006
 #
 
 #
@@ -312,7 +312,13 @@ CONFIG_FW_LOADER=m
 #
 # Plug and Play support
 #
-# CONFIG_PNP is not set
+CONFIG_PNP=y
+# CONFIG_PNP_DEBUG is not set
+
+#
+# Protocols
+#
+CONFIG_PNPACPI=y
 
 #
 # Block devices
@@ -357,6 +363,7 @@ CONFIG_BLK_DEV_IDESCSI=m
 # IDE chipset support/bugfixes
 #
 CONFIG_IDE_GENERIC=y
+# CONFIG_BLK_DEV_IDEPNP is not set
 CONFIG_BLK_DEV_IDEPCI=y
 # CONFIG_IDEPCI_SHARE_IRQ is not set
 # CONFIG_BLK_DEV_OFFBOARD is not set
@@ -525,6 +532,7 @@ CONFIG_DUMMY=m
 # CONFIG_BONDING is not set
 # CONFIG_EQUALIZER is not set
 # CONFIG_TUN is not set
+# CONFIG_NET_SB1000 is not set
 
 #
 # ARCnet devices
diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 6ade3790ce0..e00b21514f7 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -36,7 +36,7 @@ int __init init_cyclone_clock(void)
 	u32* volatile cyclone_timer;	/* Cyclone MPMC0 register */
 
 	if (!use_cyclone)
-		return -ENODEV;
+		return 0;
 
 	printk(KERN_INFO "Summit chipset: Starting Cyclone Counter.\n");
 
diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S
index 9f80569a32b..dcd906fe574 100644
--- a/arch/ia64/kernel/ivt.S
+++ b/arch/ia64/kernel/ivt.S
@@ -561,11 +561,12 @@ ENTRY(dirty_bit)
 	;;					// avoid RAW on r18
 	mov ar.ccv=r18				// set compare value for cmpxchg
 	or r25=_PAGE_D|_PAGE_A,r18		// set the dirty and accessed bits
+	tbit.z p7,p6 = r18,_PAGE_P_BIT		// Check present bit
 	;;
-	cmpxchg8.acq r26=[r17],r25,ar.ccv
+(p6)	cmpxchg8.acq r26=[r17],r25,ar.ccv	// Only update if page is present
 	mov r24=PAGE_SHIFT<<2
 	;;
-	cmp.eq p6,p7=r26,r18
+(p6)	cmp.eq p6,p7=r26,r18			// Only compare if page is present
 	;;
 (p6)	itc.d r25				// install updated PTE
 	;;
@@ -626,11 +627,12 @@ ENTRY(iaccess_bit)
 	;;
 	mov ar.ccv=r18				// set compare value for cmpxchg
 	or r25=_PAGE_A,r18			// set the accessed bit
+	tbit.z p7,p6 = r18,_PAGE_P_BIT	 	// Check present bit
 	;;
-	cmpxchg8.acq r26=[r17],r25,ar.ccv
+(p6)	cmpxchg8.acq r26=[r17],r25,ar.ccv	// Only if page present
 	mov r24=PAGE_SHIFT<<2
 	;;
-	cmp.eq p6,p7=r26,r18
+(p6)	cmp.eq p6,p7=r26,r18			// Only if page present
 	;;
 (p6)	itc.i r25				// install updated PTE
 	;;
@@ -680,11 +682,12 @@ ENTRY(daccess_bit)
 	;;					// avoid RAW on r18
 	mov ar.ccv=r18				// set compare value for cmpxchg
 	or r25=_PAGE_A,r18			// set the dirty bit
+	tbit.z p7,p6 = r18,_PAGE_P_BIT		// Check present bit
 	;;
-	cmpxchg8.acq r26=[r17],r25,ar.ccv
+(p6)	cmpxchg8.acq r26=[r17],r25,ar.ccv	// Only if page is present
 	mov r24=PAGE_SHIFT<<2
 	;;
-	cmp.eq p6,p7=r26,r18
+(p6)	cmp.eq p6,p7=r26,r18			// Only if page is present
 	;;
 (p6)	itc.d r25				// install updated PTE
 	/*
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 8fd93afa75a..e883d85906d 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -123,8 +123,9 @@ mca_page_isolate(unsigned long paddr)
 void
 mca_handler_bh(unsigned long paddr)
 {
-	printk(KERN_DEBUG "OS_MCA: process [pid: %d](%s) encounters MCA.\n",
-		current->pid, current->comm);
+	printk(KERN_ERR
+		"OS_MCA: process [pid: %d](%s) encounters MCA (paddr=%lx)\n",
+		current->pid, current->comm, paddr);
 
 	spin_lock(&mca_bh_lock);
 	switch (mca_page_isolate(paddr)) {
@@ -132,7 +133,7 @@ mca_handler_bh(unsigned long paddr)
 		printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr);
 		break;
 	case ISOLATE_NG:
-		printk(KERN_DEBUG "Page isolation: ( %lx ) failure.\n", paddr);
+		printk(KERN_CRIT "Page isolation: ( %lx ) failure.\n", paddr);
 		break;
 	default:
 		break;
@@ -567,10 +568,15 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
 		return 0;
 
 	/*
-	 * If there is no bus error, record is weird but we need not to recover.
+	 * The cache check and bus check bits have four possible states
+	 *   cc bc
+	 *    0  0	Weird record, not recovered
+	 *    1  0	Cache error, not recovered
+	 *    0  1	I/O error, attempt recovery
+	 *    1  1	Memory error, attempt recovery
 	 */
 	if (psp->bc == 0 || pbci == NULL)
-		return 1;
+		return 0;