Merge branch 'merge'

54 files changed, 441 insertions, 304 deletions

diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index f3c1ebfdd0aa..f3e020f2227f 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -95,7 +95,8 @@ static void gic_set_cpu(unsigned int irq, cpumask_t mask_val)
 }
 #endif
 
-static struct irqchip gic_chip = {
+static struct irq_chip gic_chip = {
+	.name		= "GIC",
 	.ack		= gic_ack_irq,
 	.mask		= gic_mask_irq,
 	.unmask		= gic_unmask_irq,
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 04de83f4f008..4e0dcaef6eb2 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -204,7 +204,8 @@ static void locomo_unmask_irq(unsigned int irq)
 	locomo_writel(r, mapbase + LOCOMO_ICR);
 }
 
-static struct irqchip locomo_chip = {
+static struct irq_chip locomo_chip = {
+	.name	= "LOCOMO",
 	.ack	= locomo_ack_irq,
 	.mask	= locomo_mask_irq,
 	.unmask	= locomo_unmask_irq,
@@ -249,7 +250,8 @@ static void locomo_key_unmask_irq(unsigned int irq)
 	locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
 }
 
-static struct irqchip locomo_key_chip = {
+static struct irq_chip locomo_key_chip = {
+	.name	= "LOCOMO-key",
 	.ack	= locomo_key_ack_irq,
 	.mask	= locomo_key_mask_irq,
 	.unmask	= locomo_key_unmask_irq,
@@ -312,7 +314,8 @@ static void locomo_gpio_unmask_irq(unsigned int irq)
 	locomo_writel(r, mapbase + LOCOMO_GIE);
 }
 
-static struct irqchip locomo_gpio_chip = {
+static struct irq_chip locomo_gpio_chip = {
+	.name	= "LOCOMO-gpio",
 	.ack	= locomo_gpio_ack_irq,
 	.mask	= locomo_gpio_mask_irq,
 	.unmask	= locomo_gpio_unmask_irq,
@@ -357,7 +360,8 @@ static void locomo_lt_unmask_irq(unsigned int irq)
 	locomo_writel(r, mapbase + LOCOMO_LTINT);
 }
 
-static struct irqchip locomo_lt_chip = {
+static struct irq_chip locomo_lt_chip = {
+	.name	= "LOCOMO-lt",
 	.ack	= locomo_lt_ack_irq,
 	.mask	= locomo_lt_mask_irq,
 	.unmask	= locomo_lt_unmask_irq,
@@ -418,7 +422,8 @@ static void locomo_spi_unmask_irq(unsigned int irq)
 	locomo_writel(r, mapbase + LOCOMO_SPIIE);
 }
 
-static struct irqchip locomo_spi_chip = {
+static struct irq_chip locomo_spi_chip = {
+	.name	= "LOCOMO-spi",
 	.ack	= locomo_spi_ack_irq,
 	.mask	= locomo_spi_mask_irq,
 	.unmask	= locomo_spi_unmask_irq,
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 1cdb26a47e1f..a331c12cead9 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -272,7 +272,8 @@ static int sa1111_wake_lowirq(unsigned int irq, unsigned int on)
 	return 0;
 }
 
-static struct irqchip sa1111_low_chip = {
+static struct irq_chip sa1111_low_chip = {
+	.name		= "SA1111-l",
 	.ack		= sa1111_ack_irq,
 	.mask		= sa1111_mask_lowirq,
 	.unmask		= sa1111_unmask_lowirq,
@@ -368,7 +369,8 @@ static int sa1111_wake_highirq(unsigned int irq, unsigned int on)
 	return 0;
 }
 
-static struct irqchip sa1111_high_chip = {
+static struct irq_chip sa1111_high_chip = {
+	.name		= "SA1111-h",
 	.ack		= sa1111_ack_irq,
 	.mask		= sa1111_mask_highirq,
 	.unmask		= sa1111_unmask_highirq,
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index a19bc4a6196d..43d278134521 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -39,7 +39,8 @@ static void vic_unmask_irq(unsigned int irq)
 	writel(1 << irq, base + VIC_INT_ENABLE);
 }
 
-static struct irqchip vic_chip = {
+static struct irq_chip vic_chip = {
+	.name	= "VIC",
 	.ack	= vic_mask_irq,
 	.mask	= vic_mask_irq,
 	.unmask	= vic_unmask_irq,
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index b9a74a741d00..eca248d9eba4 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -470,7 +470,8 @@ static void ecard_irq_mask(unsigned int irqnr)
 	}
 }
 
-static struct irqchip ecard_chip = {
+static struct irq_chip ecard_chip = {
+	.name	= "ECARD",
 	.ack	= ecard_irq_mask,
 	.mask	= ecard_irq_mask,
 	.unmask = ecard_irq_unmask,
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 626feeec0ade..2e1bf830fe11 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -77,6 +77,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_printf(p, "%3d: ", i);
 		for_each_present_cpu(cpu)
 			seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
+		seq_printf(p, " %10s", irq_desc[i].chip->name ? : "-");
 		seq_printf(p, "  %s", action->name);
 		for (action = action->next; action; action = action->next)
 			seq_printf(p, ", %s", action->name);
diff --git a/arch/arm/mach-at91rm9200/gpio.c b/arch/arm/mach-at91rm9200/gpio.c
index 5783c282ae7b..cec199fd6721 100644
--- a/arch/arm/mach-at91rm9200/gpio.c
+++ b/arch/arm/mach-at91rm9200/gpio.c
@@ -327,7 +327,8 @@ static int gpio_irq_type(unsigned pin, unsigned type)
 	return (type == IRQT_BOTHEDGE) ? 0 : -EINVAL;
 }
 
-static struct irqchip gpio_irqchip = {
+static struct irq_chip gpio_irqchip = {
+	.name		= "GPIO",
 	.mask		= gpio_irq_mask,
 	.unmask		= gpio_irq_unmask,
 	.set_type	= gpio_irq_type,
diff --git a/arch/arm/mach-at91rm9200/irq.c b/arch/arm/mach-at91rm9200/irq.c
index 9b0911320417..c3a5e777f9f8 100644
--- a/arch/arm/mach-at91rm9200/irq.c
+++ b/arch/arm/mach-at91rm9200/irq.c
@@ -114,7 +114,8 @@ void at91_irq_resume(void)
 #define at91_aic_set_wake	NULL
 #endif
 
-static struct irqchip at91_aic_chip = {
+static struct irq_chip at91_aic_chip = {
+	.name		= "AIC",
 	.ack		= at91_aic_mask_irq,
 	.mask		= at91_aic_mask_irq,
 	.unmask		= at91_aic_unmask_irq,
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
index a5de5f1da9f2..2688bd82c2a2 100644
--- a/arch/arm/mach-imx/irq.c
+++ b/arch/arm/mach-imx/irq.c
@@ -204,13 +204,15 @@ imx_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
 	imx_gpio_handler(mask, irq, desc, regs);
 }
 
-static struct irqchip imx_internal_chip = {
+static struct irq_chip imx_internal_chip = {
+	.name = "MPU",
 	.ack = imx_mask_irq,
 	.mask = imx_mask_irq,
 	.unmask = imx_unmask_irq,
 };
 
-static struct irqchip imx_gpio_chip = {
+static struct irq_chip imx_gpio_chip = {
+	.name = "GPIO",
 	.ack = imx_gpio_ack_irq,
 	.mask = imx_gpio_mask_irq,
 	.unmask = imx_gpio_unmask_irq,
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 6d65c96ebfd2..191c57a3b997 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -161,7 +161,8 @@ static void sc_unmask_irq(unsigned int irq)
 	writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
 }
 
-static struct irqchip sc_chip = {
+static struct irq_chip sc_chip = {
+	.name	= "SC",
 	.ack	= sc_mask_irq,
 	.mask	= sc_mask_irq,
 	.unmask = sc_unmask_irq,
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 9f55f5ae1044..678b6ba2b463 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -156,7 +156,8 @@ static void cic_unmask_irq(unsigned int irq)
 	cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_SET);
 }
 
-static struct irqchip cic_chip = {
+static struct irq_chip cic_chip = {
+	.name	= "CIC",
 	.ack	= cic_mask_irq,
 	.mask	= cic_mask_irq,
 	.unmask	= cic_unmask_irq,
@@ -174,7 +175,8 @@ static void pic_unmask_irq(unsigned int irq)
 	pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_SET);
 }
 
-static struct irqchip pic_chip = {
+static struct irq_chip pic_chip = {
+	.name	= "PIC",
 	.ack	= pic_mask_irq,
 	.mask	= pic_mask_irq,
 	.unmask = pic_unmask_irq,
@@ -192,7 +194,8 @@ static void sic_unmask_irq(unsigned int irq)
 	sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_SET);
 }
 
-static struct irqchip sic_chip = {
+static struct irq_chip sic_chip = {
+	.name	= "SIC",
 	.ack	= sic_mask_irq,
 	.mask	= sic_mask_irq,
 	.unmask	= sic_unmask_irq,
diff --git a/arch/arm/mach-iop3xx/iop321-irq.c b/arch/arm/mach-iop3xx/iop321-irq.c
index d42aae6aef03..88ac333472c8 100644
--- a/arch/arm/mach-iop3xx/iop321-irq.c
+++ b/arch/arm/mach-iop3xx/iop321-irq.c
@@ -52,7 +52,8 @@ iop321_irq_unmask (unsigned int irq)
 	intctl_write(iop321_mask);
 }
 
-struct irqchip ext_chip = {
+struct irq_chip ext_chip = {
+	.name	= "IOP",
 	.ack    = iop321_irq_mask,
 	.mask   = iop321_irq_mask,
 	.unmask = iop321_irq_unmask,
diff --git a/arch/arm/mach-iop3xx/iop331-irq.c b/arch/arm/mach-iop3xx/iop331-irq.c
index f4d4321737a4..cab11722ced2 100644
--- a/arch/arm/mach-iop3xx/iop331-irq.c
+++ b/arch/arm/mach-iop3xx/iop331-irq.c
@@ -77,13 +77,15 @@ iop331_irq_unmask2(unsigned int irq)
         intctl_write1(iop331_mask1);
 }
 
-struct irqchip iop331_irqchip1 = {
+struct irq_chip iop331_irqchip1 = {
+	.name	= "IOP-1",
 	.ack    = iop331_irq_mask1,
 	.mask   = iop331_irq_mask1,
 	.unmask = iop331_irq_unmask1,
 };
 
-struct irqchip iop331_irqchip2 = {
+struct irq_chip iop331_irqchip2 = {
+	.name	= "IOP-2",
 	.ack    = iop331_irq_mask2,
 	.mask   = iop331_irq_mask2,
 	.unmask = iop331_irq_unmask2,
diff --git a/arch/arm/mach-lh7a40x/arch-kev7a400.c b/arch/arm/mach-lh7a40x/arch-kev7a400.c
index 2cccc27c62e4..4f2ab48800a5 100644
--- a/arch/arm/mach-lh7a40x/arch-kev7a400.c
+++ b/arch/arm/mach-lh7a40x/arch-kev7a400.c
@@ -63,7 +63,8 @@ static void kev7a400_unmask_cpld_irq (u32 irq)
 	CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask;
 }
 
-static struct irqchip kev7a400_cpld_chip = {
+static struct irq_chip kev7a400_cpld_chip = {
+	.name	= "CPLD",
 	.ack	= kev7a400_ack_cpld_irq,
 	.mask	= kev7a400_mask_cpld_irq,
 	.unmask	= kev7a400_unmask_cpld_irq,
diff --git a/arch/arm/mach-lh7a40x/arch-lpd7a40x.c b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
index 35c3606a2079..a6910114b24c 100644
--- a/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
+++ b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
@@ -200,7 +200,8 @@ static void lh7a40x_unmask_cpld_irq (u32 irq)
 	}
 }
 
-static struct irqchip lpd7a40x_cpld_chip = {
+static struct irq_chip lpd7a40x_cpld_chip = {
+	.name	= "CPLD",
 	.ack	= lh7a40x_ack_cpld_irq,
 	.mask	= lh7a40x_mask_cpld_irq,
 	.unmask	= lh7a40x_unmask_cpld_irq,
diff --git a/arch/arm/mach-lh7a40x/irq-kev7a400.c b/arch/arm/mach-lh7a40x/irq-kev7a400.c
index 8535764d89ca..f9b3fe9174a5 100644
--- a/arch/arm/mach-lh7a40x/irq-kev7a400.c
+++ b/arch/arm/mach-lh7a40x/irq-kev7a400.c
@@ -43,7 +43,8 @@ lh7a400_unmask_cpld_irq (u32 irq)
 }
 
 static struct
-irqchip lh7a400_cpld_chip = {
+irq_chip lh7a400_cpld_chip = {
+	.name	= "CPLD",
 	.ack	= lh7a400_ack_cpld_irq,
 	.mask	= lh7a400_mask_cpld_irq,
 	.unmask	= lh7a400_unmask_cpld_irq,
diff --git a/arch/arm/mach-lh7a40x/irq-lh7a400.c b/arch/arm/mach-lh7a40x/irq-lh7a400.c
index f9fdefef6d6f..091b2dc58d25 100644
--- a/arch/arm/mach-lh7a40x/irq-lh7a400.c
+++ b/arch/arm/mach-lh7a40x/irq-lh7a400.c
@@ -38,13 +38,15 @@ static void lh7a400_ack_gpio_irq (u32 irq)
 	INTC_INTENC = (1 << irq);
 }
 
-static struct irqchip lh7a400_internal_chip = {
+static struct irq_chip lh7a400_internal_chip = {
+	.name	= "MPU",
 	.ack	= lh7a400_mask_irq, /* Level triggering -> mask is ack */
 	.mask	= lh7a400_mask_irq,
 	.unmask	= lh7a400_unmask_irq,
 };
 
-static struct irqchip lh7a400_gpio_chip = {
+static struct irq_chip lh7a400_gpio_chip = {
+	.name	= "GPIO",
 	.ack	= lh7a400_ack_gpio_irq,
 	.mask	= lh7a400_mask_irq,
 	.unmask	= lh7a400_unmask_irq,
diff --git a/arch/arm/mach-lh7a40x/irq-lh7a404.c b/arch/arm/mach-lh7a40x/irq-lh7a404.c
index 2685a81454d2..7059b983724f 100644
--- a/arch/arm/mach-lh7a40x/irq-lh7a404.c
+++ b/arch/arm/mach-lh7a40x/irq-lh7a404.c
@@ -76,25 +76,29 @@ static void lh7a404_vic2_ack_gpio_irq (u32 irq)
 	VIC2_INTENCLR = (1 << irq);
 }
 
-static struct irqchip lh7a404_vic1_chip = {
+static struct irq_chip lh7a404_vic1_chip = {
+	.name	= "VIC1",
 	.ack	= lh7a404_vic1_mask_irq, /* Because level-triggered */
 	.mask	= lh7a404_vic1_mask_irq,
 	.unmask	= lh7a404_vic1_unmask_irq,
 };
 
-static struct irqchip lh7a404_vic2_chip = {
+static struct irq_chip lh7a404_vic2_chip = {
+	.name	= "VIC2",
 	.ack	= lh7a404_vic2_mask_irq, /* Because level-triggered */
 	.mask	= lh7a404_vic2_mask_irq,
 	.unmask	= lh7a404_vic2_unmask_irq,
 };
 
-static struct irqchip lh7a404_gpio_vic1_chip = {
+static struct irq_chip lh7a404_gpio_vic1_chip = {
+	.name	= "GPIO-VIC1",
 	.ack	= lh7a404_vic1_ack_gpio_irq,
 	.mask	= lh7a404_vic1_mask_irq,
 	.unmask	= lh7a404_vic1_unmask_irq,
 };
 
-static struct irqchip lh7a404_gpio_vic2_chip = {
+static struct irq_chip lh7a404_gpio_vic2_chip = {
+	.name	= "GPIO-VIC2",
 	.ack	= lh7a404_vic2_ack_gpio_irq,
 	.mask	= lh7a404_vic2_mask_irq,
 	.unmask	= lh7a404_vic2_unmask_irq,
diff --git a/arch/arm/mach-lh7a40x/irq-lpd7a40x.c b/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
index dcb4e17b9419..d6055dde6468 100644
--- a/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
+++ b/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
@@ -50,7 +50,8 @@ static void lh7a40x_unmask_cpld_irq (u32 irq)
 	}
 }
 
-static struct irqchip lh7a40x_cpld_chip = {
+static struct irq_chip lh7a40x_cpld_chip = {
+	.name	= "CPLD",
 	.ack	= lh7a40x_ack_cpld_irq,
 	.mask	= lh7a40x_mask_cpld_irq,
 	.unmask	= lh7a40x_unmask_cpld_irq,
diff --git a/arch/arm/mach-omap1/fpga.c b/arch/arm/mach-omap1/fpga.c
index 34eb79ee6e61..efe9bfc6e55f 100644
--- a/arch/arm/mach-omap1/fpga.c
+++ b/arch/arm/mach-omap1/fpga.c
@@ -106,14 +106,16 @@ void innovator_fpga_IRQ_demux(unsigned int irq, struct irqdesc *desc,
 	}
 }
 
-static struct irqchip omap_fpga_irq_ack = {
+static struct irq_chip omap_fpga_irq_ack = {
+	.name		= "FPGA-ack",
 	.ack		= fpga_mask_ack_irq,
 	.mask		= fpga_mask_irq,
 	.unmask		= fpga_unmask_irq,
 };
 
 
-static struct irqchip omap_fpga_irq = {
+static struct irq_chip omap_fpga_irq = {
+	.name		= "FPGA",
 	.ack		= fpga_ack_irq,
 	.mask		= fpga_mask_irq,
 	.unmask		= fpga_unmask_irq,
diff --git a/arch/arm/mach-omap1/irq.c b/arch/arm/mach-omap1/irq.c
index 9e039845b50e..3ea140bb9eba 100644
--- a/arch/arm/mach-omap1/irq.c
+++ b/arch/arm/mach-omap1/irq.c
@@ -168,7 +168,8 @@ static struct omap_irq_bank omap1610_irq_banks[] = {
 };
 #endif
 
-static struct irqchip omap_irq_chip = {
+static struct irq_chip omap_irq_chip = {
+	.name		= "MPU",
 	.ack		= omap_mask_ack_irq,
 	.mask		= omap_mask_irq,
 	.unmask		= omap_unmask_irq,
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 3eed6a737bf8..dfc3b35cc1ff 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -94,7 +94,8 @@ static void omap_mask_ack_irq(unsigned int irq)
 	omap_ack_irq(irq);
 }
 
-static struct irqchip omap_irq_chip = {
+static struct irq_chip omap_irq_chip = {
+	.name	= "INTC",
 	.ack	= omap_mask_ack_irq,
 	.mask	= omap_mask_irq,
 	.unmask	= omap_unmask_irq,
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index d9635ff4b10c..12141e2a50cc 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -39,7 +39,8 @@ static void pxa_unmask_low_irq(unsigned int irq)
 	ICMR |= (1 << (irq + PXA_IRQ_SKIP));
 }
 
-static struct irqchip pxa_internal_chip_low = {
+static struct irq_chip pxa_internal_chip_low = {
+	.name		= "SC",
 	.ack		= pxa_mask_low_irq,
 	.mask		= pxa_mask_low_irq,
 	.unmask		= pxa_unmask_low_irq,
@@ -61,7 +62,8 @@ static void pxa_unmask_high_irq(unsigned int irq)
 	ICMR2 |= (1 << (irq - 32 + PXA_IRQ_SKIP));
 }
 
-static struct irqchip pxa_internal_chip_high = {
+static struct irq_chip pxa_internal_chip_high = {
+	.name		= "SC-hi",
 	.ack		= pxa_mask_high_irq,
 	.mask		= pxa_mask_high_irq,
 	.unmask		= pxa_unmask_high_irq,
@@ -129,7 +131,8 @@ static void pxa_ack_low_gpio(unsigned int irq)
 	GEDR0 = (1 << (irq - IRQ_GPIO0));
 }
 
-static struct irqchip pxa_low_gpio_chip = {
+static struct irq_chip pxa_low_gpio_chip = {
+	.name		= "GPIO-l",
 	.ack		= pxa_ack_low_gpio,
 	.mask		= pxa_mask_low_irq,
 	.unmask		= pxa_unmask_low_irq,
@@ -237,7 +240,8 @@ static void pxa_unmask_muxed_gpio(unsigned int irq)
 	GFER(gpio) = GPIO_IRQ_falling_edge[idx] & GPIO_IRQ_mask[idx];
 }
 
-static struct irqchip pxa_muxed_gpio_chip = {
+static struct irq_chip pxa_muxed_gpio_chip = {
+	.name		= "GPIO",
 	.ack		= pxa_ack_muxed_gpio,
 	.mask		= pxa_mask_muxed_gpio,
 	.unmask		= pxa_unmask_muxed_gpio,
diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
index 1a5f5c21481e..12479ae26db2 100644
--- a/arch/arm/mach-pxa/lpd270.c
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -68,7 +68,8 @@ static void lpd270_unmask_irq(unsigned int irq)
 	__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 }
 
-static struct irqchip lpd270_irq_chip = {
+static struct irq_chip lpd270_irq_chip = {
+	.name		= "CPLD",
 	.ack		= lpd270_mask_irq,
 	.mask		= lpd270_mask_irq,
 	.unmask		= lpd270_unmask_irq,
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 6a9a669d60de..83ff5cee64d9 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -78,7 +78,8 @@ static void lubbock_unmask_irq(unsigned int irq)
 	LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
 }
 
-static struct irqchip lubbock_irq_chip = {
+static struct irq_chip lubbock_irq_chip = {
+	.name		= "FPGA",
 	.ack		= lubbock_mask_irq,
 	.mask		= lubbock_mask_irq,
 	.unmask		= lubbock_unmask_irq,
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 21ddf3de2f6e..a7e9b96f258a 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -64,7 +64,8 @@ static void mainstone_unmask_irq(unsigned int irq)
 	MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
 }
 
-static struct irqchip mainstone_irq_chip = {
+static struct irq_chip mainstone_irq_chip = {
+	.name		= "FPGA",
 	.ack		= mainstone_mask_irq,
 	.mask		= mainstone_mask_irq,
 	.unmask		= mainstone_unmask_irq,
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2891b8ca86dd..b55b90a2e8fe 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -95,7 +95,8 @@ static int sa1100_low_gpio_wake(unsigned int irq, unsigned int on)
 	return 0;
 }
 
-static struct irqchip sa1100_low_gpio_chip = {
+static struct irq_chip sa1100_low_gpio_chip = {
+	.name		= "GPIO-l",
 	.ack		= sa1100_low_gpio_ack,
 	.mask		= sa1100_low_gpio_mask,
 	.unmask		= sa1100_low_gpio_unmask,
@@ -178,7 +179,8 @@ static int sa1100_high_gpio_wake(unsigned int irq, unsigned int on)
 	return 0;
 }
 
-static struct irqchip sa1100_high_gpio_chip = {
+static struct irq_chip sa1100_high_gpio_chip = {
+	.name		= "GPIO-h",
 	.ack		= sa1100_high_gpio_ack,
 	.mask		= sa1100_high_gpio_mask,
 	.unmask		= sa1100_high_gpio_unmask,
@@ -215,7 +217,8 @@ static int sa1100_set_wake(unsigned int irq, unsigned int on)
 	return -EINVAL;
 }
 
-static struct irqchip sa1100_normal_chip = {
+static struct irq_chip sa1100_normal_chip = {
+	.name		= "SC",
 	.ack		= sa1100_mask_irq,
 	.mask		= sa1100_mask_irq,
 	.unmask		= sa1100_unmask_irq,
diff --git a/arch/arm/mach-shark/irq.c b/arch/arm/mach-shark/irq.c
index 6cb67bd3dfd3..b227052296cf 100644
--- a/arch/arm/mach-shark/irq.c
+++ b/arch/arm/mach-shark/irq.c
@@ -69,7 +69,8 @@ static irqreturn_t bogus_int(int irq, void *dev_id, struct pt_regs *regs)
 
 static struct irqaction cascade;
 
-static struct irqchip fb_chip = {
+static struct irq_chip fb_chip = {
+	.name	= "XT-PIC",
 	.ack	= shark_ack_8259A_irq,
 	.mask	= shark_disable_8259A_irq,
 	.unmask = shark_enable_8259A_irq,
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 864377176015..c4e3f8c68479 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -69,7 +69,8 @@ static void sic_unmask_irq(unsigned int irq)
 	writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_SET);
 }
 
-static struct irqchip sic_chip = {
+static struct irq_chip sic_chip = {
+	.name	= "SIC",
 	.ack	= sic_mask_irq,
 	.mask	= sic_mask_irq,
 	.unmask	= sic_unmask_irq,
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index fec7970e564d..cd7f973fb286 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -944,7 +944,8 @@ static void mpuio_unmask_irq(unsigned int irq)
 	_set_gpio_irqenable(bank, gpio, 1);
 }
 
-static struct irqchip gpio_irq_chip = {
+static struct irq_chip gpio_irq_chip = {
+	.name		= "GPIO",
 	.ack		= gpio_ack_irq,
 	.mask		= gpio_mask_irq,
 	.unmask		= gpio_unmask_irq,
@@ -952,10 +953,11 @@ static struct irqchip gpio_irq_chip = {
 	.set_wake	= gpio_wake_enable,
 };
 
-static struct irqchip mpuio_irq_chip = {
+static struct irq_chip mpuio_irq_chip = {
+	.name	= "MPUIO",
 	.ack	= mpuio_ack_irq,
 	.mask	= mpuio_mask_irq,
-	.unmask = mpuio_unmask_irq
+	.unmask	= mpuio_unmask_irq
 };
 
 static int initialized;
diff --git a/arch/i386/kernel/cpu/cpufreq/Kconfig b/arch/i386/kernel/cpu/cpufreq/Kconfig
index e44a4c6a4fe5..ccc1edff5c97 100644
--- a/arch/i386/kernel/cpu/cpufreq/Kconfig
+++ b/arch/i386/kernel/cpu/cpufreq/Kconfig
@@ -96,6 +96,7 @@ config X86_POWERNOW_K8_ACPI
 
 config X86_GX_SUSPMOD
 	tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
+	depends on PCI
 	help
 	 This add the CPUFreq driver for NatSemi Geode processors which
 	 support suspend modulation.
@@ -202,7 +203,7 @@ config X86_LONGRUN
 config X86_LONGHAUL
 	tristate "VIA Cyrix III Longhaul"
 	select CPU_FREQ_TABLE
-	depends on BROKEN
+	depends on ACPI_PROCESSOR
 	help
 	  This adds the CPUFreq driver for VIA Samuel/CyrixIII,
 	  VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 567b39bea07e..efb41e81351c 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -384,8 +384,7 @@ static int acpi_cpufreq_early_init_acpi(void)
 	}
 
 	/* Do initialization in ACPI core */
-	acpi_processor_preregister_performance(acpi_perf_data);
-	return 0;
+	return acpi_processor_preregister_performance(acpi_perf_data);
 }
 
 static int
diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c
index 146f607e9c44..4f2c3aeef724 100644
--- a/arch/i386/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c
@@ -29,11 +29,13 @@
 #include <linux/cpufreq.h>
 #include <linux/slab.h>
 #include <linux/string.h>
-#include <linux/pci.h>
 
 #include <asm/msr.h>
 #include <asm/timex.h>
 #include <asm/io.h>
+#include <asm/acpi.h>
+#include <linux/acpi.h>
+#include <acpi/processor.h>
 
 #include "longhaul.h"
 
@@ -56,6 +58,8 @@ static int minvid, maxvid;
 static unsigned int minmult, maxmult;
 static int can_scale_voltage;
 static int vrmrev;
+static struct acpi_processor *pr = NULL;
+static struct acpi_processor_cx *cx = NULL;
 
 /* Module parameters */
 static int dont_scale_voltage;
@@ -118,84 +122,65 @@ static int longhaul_get_cpu_mult(void)
 	return eblcr_table[invalue];
 }
 
+/* For processor with BCR2 MSR */
 
-static void do_powersaver(union msr_longhaul *longhaul,
-			unsigned int clock_ratio_index)
+static void do_longhaul1(int cx_address, unsigned int clock_ratio_index)
 {
-	struct pci_dev *dev;
-	unsigned long flags;
-	unsigned int tmp_mask;
-	int version;
-	int i;
-	u16 pci_cmd;
-	u16 cmd_state[64];
+	union msr_bcr2 bcr2;
+	u32 t;
 
-	switch (cpu_model) {
-	case CPU_EZRA_T:
-		version = 3;
-		break;
-	case CPU_NEHEMIAH:
-		version = 0xf;
-		break;
-	default:
-		return;
-	}
+	rdmsrl(MSR_VIA_BCR2, bcr2.val);
+	/* Enable software clock multiplier */
+	bcr2.bits.ESOFTBF = 1;
+	bcr2.bits.CLOCKMUL = clock_ratio_index;
 
-	rdmsrl(MSR_VIA_LONGHAUL, longhaul->val);
-	longhaul->bits.SoftBusRatio = clock_ratio_index & 0xf;
-	longhaul->bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4;
-	longhaul->bits.EnableSoftBusRatio = 1;
-	longhaul->bits.RevisionKey = 0;
+	/* Sync to timer tick */
+	safe_halt();
+	ACPI_FLUSH_CPU_CACHE();
+	/* Change frequency on next halt or sleep */
+	wrmsrl(MSR_VIA_BCR2, bcr2.val);
+	/* Invoke C3 */
+	inb(cx_address);
+	/* Dummy op - must do something useless after P_LVL3 read */
+	t = inl(acpi_fadt.xpm_tmr_blk.address);
+
+	/* Disable software clock multiplier */
+	local_irq_disable();
+	rdmsrl(MSR_VIA_BCR2, bcr2.val);
+	bcr2.bits.ESOFTBF = 0;
+	wrmsrl(MSR_VIA_BCR2, bcr2.val);
+}
 
-	preempt_disable();
-	local_irq_save(flags);
+/* For processor with Longhaul MSR */
 
-	/*
-	 * get current pci bus master state for all devices
-	 * and clear bus master bit
-	 */
-	dev = NULL;
-	i = 0;
-	do {
-		dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
-		if (dev != NULL) {
-			pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
-			cmd_state[i++] = pci_cmd;
-			pci_cmd &= ~PCI_COMMAND_MASTER;
-			pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
-		}
-	} while (dev != NULL);
+static void do_powersaver(int cx_address, unsigned int clock_ratio_index)
+{
+	union msr_longhaul longhaul;
+	u32 t;
 
-	tmp_mask=inb(0x21);	/* works on C3. save mask. */
-	outb(0xFE,0x21);	/* TMR0 only */
-	outb(0xFF,0x80);	/* delay */
+	rdmsrl(MSR_VIA_LONGHAUL, longhaul.val);
+	longhaul.bits.RevisionKey = longhaul.bits.RevisionID;
+	longhaul.bits.SoftBusRatio = clock_ratio_index & 0xf;
+	longhaul.bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4;
+	longhaul.bits.EnableSoftBusRatio = 1;
 
+	/* Sync to timer tick */
 	safe_halt();
-	wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
-	halt();
-
+	ACPI_FLUSH_CPU_CACHE();
+	/* Change frequency on next halt or sleep */
+	wrmsrl(MSR_VIA_LONGHAUL, longhaul.val);
+	/* Invoke C3 */
+	inb(cx_address);
+	/* Dummy op - must do something useless after P_LVL3 read */
+	t = inl(acpi_fadt.xpm_tmr_blk.address);
+
+	/* Disable bus ratio bit */
 	local_irq_disable();
-
-	outb(tmp_mask,0x21);	/* restore mask */
-
-	/* restore pci bus master state for all devices */
-	dev = NULL;
-	i = 0;
-	do {
-		dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
-		if (dev != NULL) {
-			pci_cmd = cmd_state[i++];
-			pci_write_config_byte(dev, PCI_COMMAND, pci_cmd);
-		}
-	} while (dev != NULL);
-	local_irq_restore(flags);
-	preempt_enable();
-
-	/* disable bus ratio bit */
-	rdmsrl(MSR_VIA_LONGHAUL, longhaul->val);
-	longhaul->bits.EnableSoftBusRatio = 0;
-	longhaul->bits.RevisionKey = version;
-	wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
+	longhaul.bits.RevisionKey = longhaul.bits.RevisionID;
+	longhaul.bits.EnableSoftBusRatio = 0;
+	longhaul.bits.EnableSoftBSEL = 0;
+	longhaul.bits.EnableSoftVID = 0;
+	wrmsrl(MSR_VIA_LONGHAUL, longhaul.val);
 }
 
 /**
@@ -209,9 +194,9 @@ static void longhaul_setstate(unsigned int clock_ratio_index)
 {
 	int speed, mult;
 	struct cpufreq_freqs freqs;
-	union msr_longhaul longhaul;
-	union msr_bcr2 bcr2;
 	static unsigned int old_ratio=-1;
+	unsigned long flags;
+	unsigned int pic1_mask, pic2_mask;
 
 	if (old_ratio == clock_ratio_index)
 		return;
@@ -234,6 +219,20 @@ static void longhaul_setstate(unsigned int clock_ratio_index)
 	dprintk ("Setting to FSB:%dMHz Mult:%d.%dx (%s)\n",
 			fsb, mult/10, mult%10, print_speed(speed/1000));
 
+	preempt_disable();
+	local_irq_save(flags);
+
+	pic2_mask = inb(0xA1);
+	pic1_mask = inb(0x21);	/* works on C3. save mask. */
+	outb(0xFF,0xA1);	/* Overkill */
+	outb(0xFE,0x21);	/* TMR0 only */
+
+	/* Disable bus master arbitration */
+	if (pr->flags.bm_check) {
+		acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1,
+				  ACPI_MTX_DO_NOT_LOCK);
+	}
+
 	switch (longhaul_version) {
 
 	/*
@@ -245,20 +244,7 @@ static void longhaul_setstate(unsigned int clock_ratio_index)
 	 */
 	case TYPE_LONGHAUL_V1:
 	case TYPE_LONGHAUL_V2:
-		rdmsrl (MSR_VIA_BCR2, bcr2.val);
-		/* Enable software clock multiplier */
-		bcr2.bits.ESOFTBF = 1;
-		bcr2.bits.CLOCKMUL = clock_ratio_index;
-		local_irq_disable();
-		wrmsrl (MSR_VIA_BCR2, bcr2.val);
-		safe_halt();
-
-		/* Disable software clock multiplier */
-		rdmsrl (MSR_VIA_BCR2, bcr2.val);
-		bcr2.bits.ESOFTBF = 0;
-		local_irq_disable();
-		wrmsrl (MSR_VIA_BCR2, bcr2.val);
-		local_irq_enable();
+		do_longhaul1(cx->address, clock_ratio_index);
 		break;
 
 	/*
@@ -273,10 +259,22 @@ static void longhaul_setstate(unsigned int clock_ratio_index)
 	 * to work in practice.
 	 */
 	case TYPE_POWERSAVER:
-		do_powersaver(&longhaul, clock_ratio_index);
+		do_powersaver(cx->address, clock_ratio_index);
 		break;
 	}
 
+	/* Enable bus master arbitration */
+	if (pr->flags.bm_check) {
+		acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0,
+				  ACPI_MTX_DO_NOT_LOCK);
+	}
+
+	outb(pic2_mask,0xA1);	/* restore mask */
+	outb(pic1_mask,0x21);
+
+	local_irq_restore(flags);
+	preempt_enable();
+
 	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
 }
 
@@ -324,9 +322,11 @@ static int guess_fsb(void)
 static int __init longhaul_get_ranges(void)
 {
 	unsigned long invalue;
-	unsigned int multipliers[32]= {
-		50,30,40,100,55,35,45,95,90,70,80,60,120,75,85,65,
-		-1,110,120,-1,135,115,125,105,130,150,160,140,-1,155,-1,145 };
+	unsigned int ezra_t_multipliers[32]= {
+			90,  30,  40, 100,  55,  35,  45,  95,
+			50,  70,  80,  60, 120,  75,  85,  65,
+			-1, 110, 120,  -1, 135, 115, 125, 105,
+			130, 150, 160, 140,  -1, 155,  -1, 145 };
 	unsigned int j, k = 0;
 	union msr_longhaul longhaul;
 	unsigned long lo, hi;
@@ -355,13 +355,13 @@ static int __init longhaul_get_ranges(void)
 			invalue = longhaul.bits.MaxMHzBR;
 			if (longhaul.bits.MaxMHzBR4)
 				invalue += 16;
-			maxmult=multipliers[invalue];
+			maxmult=ezra_t_multipliers[invalue];
 
 			invalue = longhaul.bits.MinMHzBR;
 			if (longhaul.bits.MinMHzBR4 == 1)
 				minmult = 30;
 			else
-				minmult = multipliers[invalue];
+				minmult = ezra_t_multipliers[invalue];
 			fsb = eblcr_fsb_table_v2[longhaul.bits.MaxMHzFSB];
 			break;
 		}
@@ -527,6 +527,18 @@ static unsigned int longhaul_get(unsigned int cpu)
 	return calc_speed(longhaul_get_cpu_mult());
 }
 
+static acpi_status longhaul_walk_callback(acpi_handle obj_handle,
+					  u32 nesting_level,
+					  void *context, void **return_value)
+{
+	struct acpi_device *d;
+
+	if ( acpi_bus_get_device(obj_handle, &d) ) {
+		return 0;
+	}
+	*return_value = (void *)acpi_driver_data(d);
+	return 1;
+}
 
 static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
 {
@@ -534,6 +546,15 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
 	char *cpuname=NULL;
 	int ret;
 
+	/* Check ACPI support for C3 state */
+	acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
+			 &longhaul_walk_callback, NULL, (void *)&pr);
+	if (pr == NULL) goto err_acpi;
+
+	cx = &pr->power.states[ACPI_STATE_C3];
+	if (cx->address == 0 || cx->latency > 1000) goto err_acpi;
+
+	/* Now check what we have on this motherboard */
 	switch (c->x86_model) {
 	case 6:
 		cpu_model = CPU_SAMUEL;
@@ -634,6 +655,10 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
 	cpufreq_frequency_table_get_attr(longhaul_table, policy->cpu);
 
 	return 0;
+
+err_acpi:
+	printk(KERN_ERR PFX "No ACPI support for CPU frequency changes.\n");
+	return -ENODEV;
 }
 
 static int __devexit longhaul_cpu_exit(struct cpufreq_policy *policy)
@@ -666,6 +691,18 @@ static int __init longhaul_init(void)
 	if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6)
 		return -ENODEV;
 
+#ifdef CONFIG_SMP
+	if (num_online_cpus() > 1) {
+		return -ENODEV;
+		printk(KERN_ERR PFX "More than 1 CPU detected, longhaul disabled.\n");
+	}
+#endif
+#ifdef CONFIG_X86_IO_APIC
+	if (cpu_has_apic) {
+		printk(KERN_ERR PFX "APIC detected. Longhaul is currently broken in this configuration.\n");
+		return -ENODEV;
+	}
+#endif
 	switch (c->x86_model) {
 	case 6 ... 9:
 		return cpufreq_register_driver(&longhaul_driver);
@@ -699,6 +736,6 @@ MODULE_AUTHOR ("Dave Jones <davej@codemonkey.org.uk>");
 MODULE_DESCRIPTION ("Longhaul driver for VIA Cyrix processors.");
 MODULE_LICENSE ("GPL");
 
-module_init(longhaul_init);
+late_initcall(longhaul_init);
 module_exit(longhaul_exit);
 
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
index a3fe97531134..8a4f0d0d17a3 100644
--- a/arch/ia64/hp/sim/simscsi.c
+++ b/arch/ia64/hp/sim/simscsi.c
@@ -151,7 +151,7 @@ static void
 simscsi_sg_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset)
 {
 	int list_len = sc->use_sg;
-	struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+	struct scatterlist *sl = (struct scatterlist *)sc->request_buffer;
 	struct disk_stat stat;
 	struct disk_req req;
 
@@ -244,7 +244,7 @@ static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len)
 
 	if (scatterlen == 0)
 		memcpy(sc->request_buffer, buf, len);
-	else for (slp = (struct scatterlist *)sc->buffer; scatterlen-- > 0 && len > 0; slp++) {
+	else for (slp = (struct scatterlist *)sc->request_buffer; scatterlen-- > 0 && len > 0; slp++) {
 		unsigned thislen = min(len, slp->length);
 
 		memcpy(page_address(slp->page) + slp->offset, buf, thislen);
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index e4bfa9dafbce..bb8770a177b5 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -632,7 +632,7 @@ kern_memory_descriptor (unsigned long phys_addr)
 		if (phys_addr - md->start < (md->num_pages << EFI_PAGE_SHIFT))
 			 return md;
 	}
-	return 0;
+	return NULL;
 }
 
 static efi_memory_desc_t *
@@ -652,7 +652,7 @@ efi_memory_descriptor (unsigned long phys_addr)
 		if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
 			 return md;
 	}
-	return 0;
+	return NULL;
 }
 
 u32
@@ -923,7 +923,7 @@ find_memmap_space (void)
 void
 efi_memmap_init(unsigned long *s, unsigned long *e)
 {
-	struct kern_memdesc *k, *prev = 0;
+	struct kern_memdesc *k, *prev = NULL;
 	u64	contig_low=0, contig_high=0;
 	u64	as, ae, lim;
 	void *efi_map_start, *efi_map_end, *p, *q;
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 561b8f1d3bc7..29236f0c62b5 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -853,7 +853,6 @@ END(__ia64_init_fpu)
  */
 GLOBAL_ENTRY(ia64_switch_mode_phys)
  {
-	alloc r2=ar.pfs,0,0,0,0
 	rsm psr.i | psr.ic		// disable interrupts and interrupt collection
 	mov r15=ip
  }
@@ -902,7 +901,6 @@ END(ia64_switch_mode_phys)
  */
 GLOBAL_ENTRY(ia64_switch_mode_virt)
  {
-	alloc r2=ar.pfs,0,0,0,0
 	rsm psr.i | psr.ic		// disable interrupts and interrupt collection
 	mov r15=ip
  }
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index b7cf651ceb14..3ead20fb6f4b 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -62,7 +62,7 @@ EXPORT_SYMBOL(__udivdi3);
 EXPORT_SYMBOL(__moddi3);
 EXPORT_SYMBOL(__umoddi3);
 
-#if defined(CONFIG_MD_RAID5) || defined(CONFIG_MD_RAID5_MODULE)
+#if defined(CONFIG_MD_RAID456) || defined(CONFIG_MD_RAID456_MODULE)
 extern void xor_ia64_2(void);
 extern void xor_ia64_3(void);
 extern void xor_ia64_4(void);
diff --git a/arch/ia64/kernel/pal.S b/arch/ia64/kernel/pal.S
index 5018c7f2e7a8..ebaf1e685f5e 100644
--- a/arch/ia64/kernel/pal.S
+++ b/arch/ia64/kernel/pal.S
@@ -217,12 +217,7 @@ GLOBAL_ENTRY(ia64_pal_call_phys_stacked)
 	.body
 	;;
 	ld8 loc2 = [loc2]		// loc2 <- entry point
-	mov out0 = in0		// first argument
-	mov out1 = in1		// copy arg2
-	mov out2 = in2		// copy arg3
-	mov out3 = in3		// copy arg3
-	;;
-	mov loc3 = psr		// save psr
+	mov loc3 = psr			// save psr
 	;;
 	mov loc4=ar.rsc			// save RSE configuration
 	dep.z loc2=loc2,0,61		// convert pal entry point to physical
@@ -236,18 +231,23 @@ GLOBAL_ENTRY(ia64_pal_call_phys_stacked)
 	;;
 	andcm r16=loc3,r16		// removes bits to clear from psr
 	br.call.sptk.many rp=ia64_switch_mode_phys
-.ret6:
+
+	mov out0 = in0			// first argument
+	mov out1 = in1			// copy arg2
+	mov out2 = in2			// copy arg3
+	mov out3 = in3			// copy arg3
 	mov loc5 = r19
 	mov loc6 = r20
+
 	br.call.sptk.many rp=b7		// now make the call
-.ret7:
+
 	mov ar.rsc=0			// put RSE in enforced lazy, LE mode
 	mov r16=loc3			// r16= original psr
 	mov r19=loc5
 	mov r20=loc6
 	br.call.sptk.many rp=ia64_switch_mode_virt	// return to virtual mode
 
-.ret8:	mov psr.l  = loc3		// restore init PSR
+	mov psr.l  = loc3		// restore init PSR
 	mov ar.pfs = loc1
 	mov rp = loc0
 	;;
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index ab5b52413e91..0b546e2b36ac 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -566,29 +566,23 @@ version_info(char *page)
 	pal_version_u_t min_ver, cur_ver;
 	char *p = page;
 
-	/* The PAL_VERSION call is advertised as being able to support
-	 * both physical and virtual mode calls. This seems to be a documentation
-	 * bug rather than firmware bug. In fact, it does only support physical mode.
-	 * So now the code reflects this fact and the pal_version() has been updated
-	 * accordingly.
-	 */
-	if (ia64_pal_version(&min_ver, &cur_ver) != 0) return 0;
+	if (ia64_pal_version(&min_ver, &cur_ver) != 0)
+		return 0;
 
 	p += sprintf(p,
 		     "PAL_vendor : 0x%02x (min=0x%02x)\n"
-		     "PAL_A      : %x.%x.%x (min=%x.%x.%x)\n"
-		     "PAL_B      : %x.%x.%x (min=%x.%x.%x)\n",
-		     cur_ver.pal_version_s.pv_pal_vendor, min_ver.pal_version_s.pv_pal_vendor,
-
-		     cur_ver.pal_version_s.pv_pal_a_model>>4,
-		     cur_ver.pal_version_s.pv_pal_a_model&0xf, cur_ver.pal_version_s.pv_pal_a_rev,
-		     min_ver.pal_version_s.pv_pal_a_model>>4,
-		     min_ver.pal_version_s.pv_pal_a_model&0xf, min_ver.pal_version_s.pv_pal_a_rev,
-
-		     cur_ver.pal_version_s.pv_pal_b_model>>4,
-		     cur_ver.pal_version_s.pv_pal_b_model&0xf, cur_ver.pal_version_s.pv_pal_b_rev,
-		     min_ver.pal_version_s.pv_pal_b_model>>4,
-		     min_ver.pal_version_s.pv_pal_b_model&0xf, min_ver.pal_version_s.pv_pal_b_rev);
+		     "PAL_A      : %02x.%02x (min=%02x.%02x)\n"
+		     "PAL_B      : %02x.%02x (min=%02x.%02x)\n",
+		     cur_ver.pal_version_s.pv_pal_vendor,
+		     min_ver.pal_version_s.pv_pal_vendor,
+		     cur_ver.pal_version_s.pv_pal_a_model,
+		     cur_ver.pal_version_s.pv_pal_a_rev,
+		     min_ver.pal_version_s.pv_pal_a_model,
+		     min_ver.pal_version_s.pv_pal_a_rev,
+		     cur_ver.pal_version_s.pv_pal_b_model,
+		     cur_ver.pal_version_s.pv_pal_b_rev,
+		     min_ver.pal_version_s.pv_pal_b_model,
+		     min_ver.pal_version_s.pv_pal_b_rev);
 	return p - page;
 }
 
diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index 5f03b9e524dd..4c73a6763669 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -32,32 +32,38 @@
 
 extern void __init efi_memmap_walk_uc(efi_freemem_callback_t, void *);
 
-#define MAX_UNCACHED_GRANULES	5
-static int allocated_granules;
+struct uncached_pool {
+	struct gen_pool *pool;
+	struct mutex add_chunk_mutex;	/* serialize adding a converted chunk */
+	int nchunks_added;		/* #of converted chunks added to pool */
+	atomic_t status;		/* smp called function's return status*/
+};
+
+#define MAX_CONVERTED_CHUNKS_PER_NODE	2
 
-struct gen_pool *uncached_pool[MAX_NUMNODES];
+struct uncached_pool uncached_pools[MAX_NUMNODES];
 
 
 static void uncached_ipi_visibility(void *data)
 {
 	int status;
+	struct uncached_pool *uc_pool = (struct uncached_pool *)data;
 
 	status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
 	if ((status != PAL_VISIBILITY_OK) &&
 	    (status != PAL_VISIBILITY_OK_REMOTE_NEEDED))
-		printk(KERN_DEBUG "pal_prefetch_visibility() returns %i on "
-		       "CPU %i\n", status, raw_smp_processor_id());
+		atomic_inc(&uc_pool->status);
 }
 
 
 static void uncached_ipi_mc_drain(void *data)
 {
 	int status;
+	struct uncached_pool *uc_pool = (struct uncached_pool *)data;
 
 	status = ia64_pal_mc_drain();
-	if (status)
-		printk(KERN_WARNING "ia64_pal_mc_drain() failed with %i on "
-		       "CPU %i\n", status, raw_smp_processor_id());
+	if (status != PAL_STATUS_SUCCESS)
+		atomic_inc(&uc_pool->status);
 }
 
 
@@ -70,21 +76,34 @@ static void uncached_ipi_mc_drain(void *data)
  * This is accomplished by first allocating a granule of cached memory pages
  * and then converting them to uncached memory pages.
  */
-static int uncached_add_chunk(struct gen_pool *pool, int nid)
+static int uncached_add_chunk(struct uncached_pool *uc_pool, int nid)
 {
 	struct page *page;
-	int status, i;
+	int status, i, nchunks_added = uc_pool->nchunks_added;
 	unsigned long c_addr, uc_addr;
 
-	if (allocated_granules >= MAX_UNCACHED_GRANULES)
+	if (mutex_lock_interruptible(&uc_pool->add_chunk_mutex) != 0)
+		return -1;	/* interrupted by a signal */
+
+	if (uc_pool->nchunks_added > nchunks_added) {
+		/* someone added a new chunk while we were waiting */
+		mutex_unlock(&uc_pool->add_chunk_mutex);
+		return 0;
+	}
+
+	if (uc_pool->nchunks_added >= MAX_CONVERTED_CHUNKS_PER_NODE) {
+		mutex_unlock(&uc_pool->add_chunk_mutex);
 		return -1;
+	}
 
 	/* attempt to allocate a granule's worth of cached memory pages */
 
 	page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO,
 				IA64_GRANULE_SHIFT-PAGE_SHIFT);
-	if (!page)
+	if (!page) {
+		mutex_unlock(&uc_pool->add_chunk_mutex);
 		return -1;
+	}
 
 	/* convert the memory pages from cached to uncached */
 
@@ -102,11 +121,14 @@ static int uncached_add_chunk(struct gen_pool *pool, int nid)
 	flush_tlb_kernel_range(uc_addr, uc_adddr + IA64_GRANULE_SIZE);
 
 	status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
-	if (!status) {
-		status = smp_call_function(uncached_ipi_visibility, NULL, 0, 1);
-		if (status)
+	if (status == PAL_VISIBILITY_OK_REMOTE_NEEDED) {
+		atomic_set(&uc_pool->status, 0);
+		status = smp_call_function(uncached_ipi_visibility, uc_pool,
+					   0, 1);
+		if (status || atomic_read(&uc_pool->status))
 			goto failed;
-	}
+	} else if (status != PAL_VISIBILITY_OK)
+		goto failed;
 
 	preempt_disable();
 
@@ -120,20 +142,24 @@ static int uncached_add_chunk(struct gen_pool *pool, int nid)
 
 	preempt_enable();
 
-	ia64_pal_mc_drain();
-	status = smp_call_function(uncached_ipi_mc_drain, NULL, 0, 1);
-	if (status)
+	status = ia64_pal_mc_drain();
+	if (status != PAL_STATUS_SUCCESS)
+		goto failed;
+	atomic_set(&uc_pool->status, 0);
+	status = smp_call_function(uncached_ipi_mc_drain, uc_pool, 0, 1);
+	if (status || atomic_read(&uc_pool->status))
 		goto failed;
 
 	/*
 	 * The chunk of memory pages has been converted to uncached so now we
 	 * can add it to the pool.
 	 */
-	status = gen_pool_add(pool, uc_addr, IA64_GRANULE_SIZE, nid);
+	status = gen_pool_add(uc_pool->pool, uc_addr, IA64_GRANULE_SIZE, nid);
 	if (status)
 		goto failed;
 
-	allocated_granules++;
+	uc_pool->nchunks_added++;
+	mutex_unlock(&uc_pool->add_chunk_mutex);
 	return 0;
 
 	/* failed to convert or add the chunk so give it back to the kernel */
@@ -142,6 +168,7 @@ failed:
 		ClearPageUncached(&page[i]);
 
 	free_pages(c_addr, IA64_GRANULE_SHIFT-PAGE_SHIFT);
+	mutex_unlock(&uc_pool->add_chunk_mutex);
 	return -1;
 }
 
@@ -158,7 +185,7 @@ failed:
 unsigned long uncached_alloc_page(int starting_nid)
 {
 	unsigned long uc_addr;
-	struct gen_pool *pool;
+	struct uncached_pool *uc_pool;
 	int nid;
 
 	if (unlikely(starting_nid >= MAX_NUMNODES))
@@ -171,14 +198,14 @@ unsigned long uncached_alloc_page(int starting_nid)
 	do {
 		if (!node_online(nid))
 			continue;
-		pool = uncached_pool[nid];
-		if (pool == NULL)
+		uc_pool = &uncached_pools[nid];
+		if (uc_pool->pool == NULL)
 			continue;
 		do {
-			uc_addr = gen_pool_alloc(pool, PAGE_SIZE);
+			uc_addr = gen_pool_alloc(uc_pool->pool, PAGE_SIZE);
 			if (uc_addr != 0)
 				return uc_addr;
-		} while (uncached_add_chunk(pool, nid) == 0);
+		} while (uncached_add_chunk(uc_pool, nid) == 0);
 
 	} while ((nid = (nid + 1) % MAX_NUMNODES) != starting_nid);
 
@@ -197,7 +224,7 @@ EXPORT_SYMBOL(uncached_alloc_page);
 void uncached_free_page(unsigned long uc_addr)
 {
 	int nid = paddr_to_nid(uc_addr - __IA64_UNCACHED_OFFSET);
-	struct gen_pool *pool = uncached_pool[nid];
+	struct gen_pool *pool = uncached_pools[nid].pool;
 
 	if (unlikely(pool == NULL))
 		return;
@@ -224,7 +251,7 @@ static int __init uncached_build_memmap(unsigned long uc_start,
 					unsigned long uc_end, void *arg)
 {
 	int nid = paddr_to_nid(uc_start - __IA64_UNCACHED_OFFSET);
-	struct gen_pool *pool = uncached_pool[nid];
+	struct gen_pool *pool = uncached_pools[nid].pool;
 	size_t size = uc_end - uc_start;
 
 	touch_softlockup_watchdog();
@@ -242,7 +269,8 @@ static int __init uncached_init(void)
 	int nid;
 
 	for_each_online_node(nid) {
-		uncached_pool[nid] = gen_pool_create(PAGE_SHIFT, nid);
+		uncached_pools[nid].pool = gen_pool_create(PAGE_SHIFT, nid);
+		mutex_init(&uncached_pools[nid].add_chunk_mutex);
 	}
 
 	efi_memmap_walk_uc(uncached_build_memmap, NULL);
diff --git a/arch/ia64/lib/Makefile b/arch/ia64/lib/Makefile
index d8536a2c22a9..38fa6e49e791 100644
--- a/arch/ia64/lib/Makefile
+++ b/arch/ia64/lib/Makefile
@@ -14,7 +14,7 @@ lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o			\
 lib-$(CONFIG_ITANIUM)	+= copy_page.o copy_user.o memcpy.o
 lib-$(CONFIG_MCKINLEY)	+= copy_page_mck.o memcpy_mck.o
 lib-$(CONFIG_PERFMON)	+= carta_random.o
-lib-$(CONFIG_MD_RAID5)	+= xor.o
+lib-$(CONFIG_MD_RAID456)	+= xor.o
 
 AFLAGS___divdi3.o	=
 AFLAGS___udivdi3.o	= -DUNSIGNED
diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index 2a88cdd6d924..e004143ba86b 100644
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -27,6 +27,7 @@
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 static unsigned long num_dma_physpages;
+static unsigned long max_gap;
 #endif
 
 /**
@@ -45,9 +46,15 @@ show_mem (void)
 
 	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
 	i = max_mapnr;
-	while (i-- > 0) {
-		if (!pfn_valid(i))
+	for (i = 0; i < max_mapnr; i++) {
+		if (!pfn_valid(i)) {
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+			if (max_gap < LARGE_GAP)
+				continue;
+			i = vmemmap_find_next_valid_pfn(0, i) - 1;
+#endif
 			continue;
+		}
 		total++;
 		if (PageReserved(mem_map+i))
 			reserved++;
@@ -234,7 +241,6 @@ paging_init (void)
 	unsigned long zones_size[MAX_NR_ZONES];
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 	unsigned long zholes_size[MAX_NR_ZONES];
-	unsigned long max_gap;
 #endif
 
 	/* initialize mem_map[] */
@@ -266,7 +272,6 @@ paging_init (void)
 		}
 	}
 
-	max_gap = 0;
 	efi_memmap_walk(find_largest_hole, (u64 *)&max_gap);
 	if (max_gap < LARGE_GAP) {
 		vmem_map = (struct page *) 0;
@@ -277,7 +282,8 @@ paging_init (void)
 
 		/* allocate virtual_mem_map */
 
-		map_size = PAGE_ALIGN(max_low_pfn * sizeof(struct page));
+		map_size = PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
+			sizeof(struct page));
 		vmalloc_end -= map_size;
 		vmem_map = (struct page *) vmalloc_end;
 		efi_memmap_walk(create_mem_map_page_table, NULL);
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 99bd9e30db96..d260bffa01ab 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -534,68 +534,6 @@ void __cpuinit *per_cpu_init(void)
 }
 #endif /* CONFIG_SMP */
 
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
-	unsigned long end_address, hole_next_pfn;
-	unsigned long stop_address;
-
-	end_address = (unsigned long) &vmem_map[pgdat->node_start_pfn + i];
-	end_address = PAGE_ALIGN(end_address);
-
-	stop_address = (unsigned long) &vmem_map[
-		pgdat->node_start_pfn + pgdat->node_spanned_pages];
-
-	do {
-		pgd_t *pgd;
-		pud_t *pud;
-		pmd_t *pmd;
-		pte_t *pte;
-
-		pgd = pgd_offset_k(end_address);
-		if (pgd_none(*pgd)) {
-			end_address += PGDIR_SIZE;
-			continue;
-		}
-
-		pud = pud_offset(pgd, end_address);
-		if (pud_none(*pud)) {
-			end_address += PUD_SIZE;
-			continue;
-		}
-
-		pmd = pmd_offset(pud, end_address);
-		if (pmd_none(*pmd)) {
-			end_address += PMD_SIZE;
-			continue;
-		}
-
-		pte = pte_offset_kernel(pmd, end_address);
-retry_pte:
-		if (pte_none(*pte)) {
-			end_address += PAGE_SIZE;
-			pte++;
-			if ((end_address < stop_address) &&
-			    (end_address != ALIGN(end_address, 1UL << PMD_SHIFT)))
-				goto retry_pte;
-			continue;
-		}
-		/* Found next valid vmem_map page */
-		break;
-	} while (end_address < stop_address);
-
-	end_address = min(end_address, stop_address);
-	end_address = end_address - (unsigned long) vmem_map + sizeof(struct page) - 1;
-	hole_next_pfn = end_address / sizeof(struct page);
-	return hole_next_pfn - pgdat->node_start_pfn;
-}
-#else
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
-	return i + 1;
-}
-#endif
-
 /**
  * show_mem - give short summary of memory stats
  *
@@ -625,7 +563,8 @@ void show_mem(void)
 			if (pfn_valid(pgdat->node_start_pfn + i))
 				page = pfn_to_page(pgdat->node_start_pfn + i);
 			else {
-				i = find_next_valid_pfn_for_pgdat(pgdat, i) - 1;
+				i = vmemmap_find_next_valid_pfn(pgdat->node_id,
+					 i) - 1;
 				continue;
 			}
 			if (PageReserved(page))
@@ -751,7 +690,8 @@ void __init paging_init(void)
 	efi_memmap_walk(filter_rsvd_memory, count_node_pages);
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
-	vmalloc_end -= PAGE_ALIGN(max_low_pfn * sizeof(struct page));
+	vmalloc_end -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
+		sizeof(struct page));
 	vmem_map = (struct page *) vmalloc_end;
 	efi_memmap_walk(create_mem_map_page_table, NULL);
 	printk("Virtual mem_map starts at 0x%p\n", vmem_map);
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 2f50c064513c..30617ccb4f7e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -415,6 +415,61 @@ ia64_mmu_init (void *my_cpu_data)
 }
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
+int vmemmap_find_next_valid_pfn(int node, int i)
+{
+	unsigned long end_address, hole_next_pfn;
+	unsigned long stop_address;
+	pg_data_t *pgdat = NODE_DATA(node);
+
+	end_address = (unsigned long) &vmem_map[pgdat->node_start_pfn + i];
+	end_address = PAGE_ALIGN(end_address);
+
+	stop_address = (unsigned long) &vmem_map[
+		pgdat->node_start_pfn + pgdat->node_spanned_pages];
+
+	do {
+		pgd_t *pgd;
+		pud_t *pud;
+		pmd_t *pmd;
+		pte_t *pte;
+
+		pgd = pgd_offset_k(end_address);
+		if (pgd_none(*pgd)) {
+			end_address += PGDIR_SIZE;
+			continue;
+		}
+
+		pud = pud_offset(pgd, end_address);
+		if (pud_none(*pud)) {
+			end_address += PUD_SIZE;
+			continue;
+		}
+
+		pmd = pmd_offset(pud, end_address);
+		if (pmd_none(*pmd)) {
+			end_address += PMD_SIZE;
+			continue;
+		}
+
+		pte = pte_offset_kernel(pmd, end_address);
+retry_pte:
+		if (pte_none(*pte)) {
+			end_address += PAGE_SIZE;
+			pte++;
+			if ((end_address < stop_address) &&
+			    (end_address != ALIGN(end_address, 1UL << PMD_SHIFT)))
+				goto retry_pte;
+			continue;
+		}
+		/* Found next valid vmem_map page */
+		break;
+	} while (end_address < stop_address);
+
+	end_address = min(end_address, stop_address);
+	end_address = end_address - (unsigned long) vmem_map + sizeof(struct page) - 1;
+	hole_next_pfn = end_address / sizeof(struct page);
+	return hole_next_pfn - pgdat->node_start_pfn;
+}
 
 int __init
 create_mem_map_page_table (u64 start, u64 end, void *arg)
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 07bd02b6c372..4280c074d64e 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -32,7 +32,7 @@ ioremap (unsigned long offset, unsigned long size)
 	 */
 	attr = kern_mem_attribute(offset, size);
 	if (attr & EFI_MEMORY_WB)
-		return phys_to_virt(offset);
+		return (void __iomem *) phys_to_virt(offset);
 	else if (attr & EFI_MEMORY_UC)
 		return __ioremap(offset, size);
 
@@ -43,7 +43,7 @@ ioremap (unsigned long offset, unsigned long size)
 	gran_base = GRANULEROUNDDOWN(offset);
 	gran_size = GRANULEROUNDUP(offset + size) - gran_base;
 	if (efi_mem_attribute(gran_base, gran_size) & EFI_MEMORY_WB)
-		return phys_to_virt(offset);
+		return (void __iomem *) phys_to_virt(offset);
 
 	return __ioremap(offset, size);
 }
@@ -53,7 +53,7 @@ void __iomem *
 ioremap_nocache (unsigned long offset, unsigned long size)
 {
 	if (kern_mem_attribute(offset, size) & EFI_MEMORY_WB)
-		return 0;
+		return NULL;
 
 	return __ioremap(offset, size);
 }
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index 99b123a6421a..5e8e59efb347 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -480,7 +480,7 @@ xpc_activating(void *__partid)
 	partid_t partid = (u64) __partid;
 	struct xpc_partition *part = &xpc_partitions[partid];
 	unsigned long irq_flags;
-	struct sched_param param = { sched_priority: MAX_RT_PRIO - 1 };
+	struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
 	int ret;
 
 
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index 17cd34284886..af7171adcd2c 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -74,7 +74,7 @@ tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
 		else
 			mmr_war_offset = 0x158;
 
-		readq_relaxed((void *)(mmr_base + mmr_war_offset));
+		readq_relaxed((void __iomem *)(mmr_base + mmr_war_offset));
 	}
 }
 
@@ -92,8 +92,8 @@ tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
 
 	if (mmr_offset < 0x45000) {
 		if (mmr_offset == 0x100)
-			readq_relaxed((void *)(mmr_base + 0x38));
-		readq_relaxed((void *)(mmr_base + 0xb050));
+			readq_relaxed((void __iomem *)(mmr_base + 0x38));
+		readq_relaxed((void __iomem *)(mmr_base + 0xb050));
 	}
 }
 
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 14353b8789dd..bfd66d3a035c 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -571,6 +571,27 @@ int rtas_set_indicator(int indicator, int index, int new_value)
 }
 EXPORT_SYMBOL(rtas_set_indicator);
 
+/*
+ * Ignoring RTAS extended delay
+ */
+int rtas_set_indicator_fast(int indicator, int index, int new_value)
+{
+	int rc;
+	int token = rtas_token("set-indicator");
+
+	if (token == RTAS_UNKNOWN_SERVICE)
+		return -ENOENT;
+
+	rc = rtas_call(token, 3, 1, NULL, indicator, index, new_value);
+
+	WARN_ON(rc == -2 || (rc >= 9900 && rc <= 9905));
+
+	if (rc < 0)
+		return rtas_error_rc(rc);
+
+	return rc;
+}
+
 void rtas_restart(char *cmd)
 {
 	if (rtas_flash_term_hook)
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 6ebeecfd6bcb..1587efc51057 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -213,8 +213,6 @@ static void pseries_lpar_enable_pmcs(void)
 {
 	unsigned long set, reset;
 
-	power4_enable_pmcs();
-
 	set = 1UL << 63;
 	reset = 0;
 	plpar_hcall_norets(H_PERFMON, set, reset);
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index c88ec63129f3..253972e5479f 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -447,7 +447,7 @@ void xics_setup_cpu(void)
 	 *
 	 * XXX: undo of teardown on kexec needs this too, as may hotplug
 	 */
-	rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+	rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 		(1UL << interrupt_server_size) - 1 - default_distrib_server, 1);
 }
 
@@ -776,7 +776,7 @@ void xics_teardown_cpu(int secondary)
 	 * so leave the master cpu in the group.
 	 */
 	if (secondary)
-		rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+		rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 				   (1UL << interrupt_server_size) - 1 -
 				   default_distrib_server, 0);
 }
@@ -793,7 +793,7 @@ void xics_migrate_irqs_away(void)
 	xics_set_cpu_priority(cpu, 0);
 
 	/* remove ourselves from the global interrupt queue */
-	status = rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+	status = rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 		(1UL << interrupt_server_size) - 1 - default_distrib_server, 0);
 	WARN_ON(status < 0);
 
diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index 781dbb11c038..b09805f3ee23 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -421,18 +421,22 @@ static struct miscdevice sq_dev = {
 
 static int __init sq_api_init(void)
 {
+	int ret;
 	printk(KERN_NOTICE "sq: Registering store queue API.\n");
 
-#ifdef CONFIG_PROC_FS
 	create_proc_read_entry("sq_mapping", 0, 0, sq_mapping_read_proc, 0);
-#endif
 
-	return misc_register(&sq_dev);
+	ret = misc_register(&sq_dev);
+	if (ret)
+		remove_proc_entry("sq_mapping", NULL);
+
+	return ret;
 }
 
 static void __exit sq_api_exit(void)
 {
 	misc_deregister(&sq_dev);
+	remove_proc_entry("sq_mapping", NULL);
 }
 
 module_init(sq_api_init);
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index d464dded68c0..6f810424df44 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -513,6 +513,7 @@ END(stub_rt_sigreturn)
 	swapgs	
 1:	incl	%gs:pda_irqcount	# RED-PEN should check preempt count
 	cmoveq %gs:pda_irqstackptr,%rsp
+	push    %rbp			# backlink for old unwinder
 	/*
 	 * We entered an interrupt context - irqs are off:
 	 */
@@ -1139,18 +1140,21 @@ ENTRY(machine_check)
 END(machine_check)
 #endif
 
+/* Call softirq on interrupt stack. Interrupts are off. */
 ENTRY(call_softirq)
 	CFI_STARTPROC
-	movq %gs:pda_irqstackptr,%rax
-	movq %rsp,%rdx
-	CFI_DEF_CFA_REGISTER	rdx
+	push %rbp
+	CFI_ADJUST_CFA_OFFSET	8
+	CFI_REL_OFFSET rbp,0
+	mov  %rsp,%rbp
+	CFI_DEF_CFA_REGISTER rbp
 	incl %gs:pda_irqcount
-	cmove %rax,%rsp
-	pushq %rdx
-	/*todo CFI_DEF_CFA_EXPRESSION ...*/
+	cmove %gs:pda_irqstackptr,%rsp
+	push  %rbp			# backlink for old unwinder
 	call __do_softirq
-	popq %rsp
+	leaveq
 	CFI_DEF_CFA_REGISTER	rsp
+	CFI_ADJUST_CFA_OFFSET   -8
 	decl %gs:pda_irqcount
 	ret
 	CFI_ENDPROC
diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c
index c4c3cc36ac5b..aad7609d8e92 100644
--- a/arch/x86_64/kernel/pci-nommu.c
+++ b/arch/x86_64/kernel/pci-nommu.c
@@ -92,5 +92,7 @@ void __init no_iommu_init(void)
 {
 	if (dma_ops)
 		return;
+
+	force_iommu = 0; /* no HW IOMMU */
 	dma_ops = &nommu_dma_ops;
 }
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 5a1c0a3bf872..06af6ca60129 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -203,7 +203,7 @@ int __cpuinit init_smp_flush(void)
 {
 	int i;
 	for_each_cpu_mask(i, cpu_possible_map) {
-		spin_lock_init(&per_cpu(flush_state.tlbstate_lock, i));
+		spin_lock_init(&per_cpu(flush_state, i).tlbstate_lock);
 	}
 	return 0;
 }