Merge branch 'genirq' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'genirq' of master.kernel.org:/home/rmk/linux-2.6-arm: (24 commits)
  [ARM] 3683/2:  ARM: Convert at91rm9200 to generic irq handling
  [ARM] 3682/2:  ARM: Convert ixp4xx to generic irq handling
  [ARM] 3702/1: ARM: Convert ixp23xx to generic irq handling
  [ARM] 3701/1: ARM: Convert plat-omap to generic irq handling
  [ARM] 3700/1: ARM: Convert lh7a40x to generic irq handling
  [ARM] 3699/1: ARM: Convert s3c2410 to generic irq handling
  [ARM] 3698/1: ARM: Convert sa1100 to generic irq handling
  [ARM] 3697/1: ARM: Convert shark to generic irq handling
  [ARM] 3696/1: ARM: Convert clps711x to generic irq handling
  [ARM] 3694/1: ARM: Convert ecard driver to generic irq handling
  [ARM] 3693/1: ARM: Convert omap1 to generic irq handling
  [ARM] 3691/1: ARM: Convert imx to generic irq handling
  [ARM] 3688/1: ARM: Convert clps7500 to generic irq handling
  [ARM] 3687/1: ARM: Convert integrator to generic irq handling
  [ARM] 3685/1: ARM: Convert pxa to generic irq handling
  [ARM] 3684/1: ARM: Convert l7200 to generic irq handling
  [ARM] 3681/1: ARM: Convert ixp2000 to generic irq handling
  [ARM] 3680/1: ARM: Convert footbridge to generic irq handling
  [ARM] 3695/1: ARM drivers/pcmcia: Fixup includes
  [ARM] 3689/1: ARM drivers/input/touchscreen: Fixup includes
  ...

Manual conflict resolved in kernel/irq/handle.c (butt-ugly ARM tickless
code).

arch/arm/Kconfig

@@ -47,6 +47,18 @@ config MCA
 	  <file:Documentation/mca.txt> (and especially the web page given
 	  there) before attempting to build an MCA bus kernel.
 
+config GENERIC_HARDIRQS
+	bool
+	default y
+
+config HARDIRQS_SW_RESEND
+	bool
+	default y
+
+config GENERIC_IRQ_PROBE
+	bool
+	default y
+
 config RWSEM_GENERIC_SPINLOCK
 	bool
 	default y

arch/arm/common/gic.c

@@ -33,6 +33,7 @@
 
 static void __iomem *gic_dist_base;
 static void __iomem *gic_cpu_base;
+static DEFINE_SPINLOCK(irq_controller_lock);
 
 /*
  * Routines to acknowledge, disable and enable interrupts
@@ -52,32 +53,45 @@ static void __iomem *gic_cpu_base;
 static void gic_ack_irq(unsigned int irq)
 {
 	u32 mask = 1 << (irq % 32);
+
+	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base + GIC_DIST_ENABLE_CLEAR + (irq / 32) * 4);
 	writel(irq, gic_cpu_base + GIC_CPU_EOI);
+	spin_unlock(&irq_controller_lock);
 }
 
 static void gic_mask_irq(unsigned int irq)
 {
 	u32 mask = 1 << (irq % 32);
+
+	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base + GIC_DIST_ENABLE_CLEAR + (irq / 32) * 4);
+	spin_unlock(&irq_controller_lock);
 }
 
 static void gic_unmask_irq(unsigned int irq)
 {
 	u32 mask = 1 << (irq % 32);
+
+	spin_lock(&irq_controller_lock);
 	writel(mask, gic_dist_base + GIC_DIST_ENABLE_SET + (irq / 32) * 4);
+	spin_unlock(&irq_controller_lock);
 }
 
 #ifdef CONFIG_SMP
-static void gic_set_cpu(struct irqdesc *desc, unsigned int irq, unsigned int cpu)
+static void gic_set_cpu(unsigned int irq, cpumask_t mask_val)
 {
 	void __iomem *reg = gic_dist_base + GIC_DIST_TARGET + (irq & ~3);
 	unsigned int shift = (irq % 4) * 8;
+	unsigned int cpu = first_cpu(mask_val);
 	u32 val;
 
+	spin_lock(&irq_controller_lock);
+	irq_desc[irq].cpu = cpu;
 	val = readl(reg) & ~(0xff << shift);
 	val |= 1 << (cpu + shift);
 	writel(val, reg);
+	spin_unlock(&irq_controller_lock);
 }
 #endif
 
@@ -86,7 +100,7 @@ static struct irqchip gic_chip = {
 	.mask		= gic_mask_irq,
 	.unmask		= gic_unmask_irq,
 #ifdef CONFIG_SMP
-	.set_cpu	= gic_set_cpu,
+	.set_affinity	= gic_set_cpu,
 #endif
 };
 

arch/arm/common/sa1111.c

@@ -150,7 +150,7 @@ static void
 sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 {
 	unsigned int stat0, stat1, i;
-	void __iomem *base = desc->data;
+	void __iomem *base = get_irq_data(irq);
 
 	stat0 = sa1111_readl(base + SA1111_INTSTATCLR0);
 	stat1 = sa1111_readl(base + SA1111_INTSTATCLR1);
@@ -168,11 +168,11 @@ sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 
 	for (i = IRQ_SA1111_START; stat0; i++, stat0 >>= 1)
 		if (stat0 & 1)
-			do_edge_IRQ(i, irq_desc + i, regs);
+			handle_edge_irq(i, irq_desc + i, regs);
 
 	for (i = IRQ_SA1111_START + 32; stat1; i++, stat1 >>= 1)
 		if (stat1 & 1)
-			do_edge_IRQ(i, irq_desc + i, regs);
+			handle_edge_irq(i, irq_desc + i, regs);
 
 	/* For level-based interrupts */
 	desc->chip->unmask(irq);

arch/arm/common/time-acorn.c

@@ -16,6 +16,7 @@
 #include <linux/timex.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>

arch/arm/kernel/ecard.c

@@ -619,7 +619,7 @@ ecard_irqexp_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
 		ecard_t *ec = slot_to_ecard(slot);
 
 		if (ec->claimed) {
-			struct irqdesc *d = irqdesc + ec->irq;
+			struct irq_desc *d = irq_desc + ec->irq;
 			/*
 			 * this ugly code is so that we can operate a
 			 * prioritorising system:

arch/arm/kernel/fiq.c

@@ -38,6 +38,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/seq_file.h>
 
 #include <asm/cacheflush.h>

arch/arm/mach-at91rm9200/at91rm9200_time.c

@@ -21,13 +21,13 @@
 
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/time.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
-#include <asm/irq.h>
 #include <asm/mach/time.h>
 
 static unsigned long last_crtr;

arch/arm/mach-at91rm9200/gpio.c

@@ -10,12 +10,13 @@
  */
 
 #include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/module.h>
 
 #include <asm/io.h>
-#include <asm/mach/irq.h>
 #include <asm/hardware.h>
 #include <asm/arch/gpio.h>
 
@@ -340,7 +341,7 @@ static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs
 	void __iomem	*pio;
 	u32		isr;
 
-	pio = desc->base;
+	pio = get_irq_chip_data(irq);
 
 	/* temporarily mask (level sensitive) parent IRQ */
 	desc->chip->ack(irq);
@@ -350,12 +351,12 @@ static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs
 		if (!isr)
 			break;
 
-		pin = (unsigned) desc->data;
+		pin = (unsigned) get_irq_data(irq);
 		gpio = &irq_desc[pin];
 
 		while (isr) {
 			if (isr & 1) {
-				if (unlikely(gpio->disable_depth)) {
+				if (unlikely(gpio->depth)) {
 					/*
 					 * The core ARM interrupt handler lazily disables IRQs so
 					 * another IRQ must be generated before it actually gets
@@ -364,7 +365,7 @@ static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs
 					gpio_irq_mask(pin);
 				}
 				else
-					gpio->handle(pin, gpio, regs);
+					desc_handle_irq(pin, gpio, regs);
 			}
 			pin++;
 			gpio++;

arch/arm/mach-clps711x/time.c

@@ -19,6 +19,7 @@
 #include <linux/timex.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/sched.h>
 
 #include <asm/hardware.h>

arch/arm/mach-clps7500/core.c

@@ -9,6 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/list.h>
 #include <linux/sched.h>
 #include <linux/init.h>

arch/arm/mach-footbridge/dc21285-timer.c

@@ -6,6 +6,7 @@
  */
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/irq.h>
 

arch/arm/mach-footbridge/isa-timer.c

@@ -6,6 +6,7 @@
  */
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>

arch/arm/mach-imx/time.c

@@ -12,6 +12,7 @@
 #include <linux/sched.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/time.h>
 
 #include <asm/hardware.h>

arch/arm/mach-integrator/core.c

@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
 #include <linux/termios.h>

arch/arm/mach-ixp2000/core.c

@@ -19,6 +19,7 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/bitops.h>
@@ -408,7 +409,7 @@ static void ixp2000_err_irq_handler(unsigned int irq, struct irqdesc *desc,  str
 	for(i = 31; i >= 0; i--) {
 		if(status & (1 << i)) {
 			desc = irq_desc + IRQ_IXP2000_DRAM0_MIN_ERR + i;
-			desc->handle(IRQ_IXP2000_DRAM0_MIN_ERR + i, desc, regs);
+			desc_handle_irq(IRQ_IXP2000_DRAM0_MIN_ERR + i, desc, regs);
 		}
 	}
 }

arch/arm/mach-ixp2000/ixdp2x00.c

@@ -167,7 +167,7 @@ void ixdp2x00_init_irq(volatile unsigned long *stat_reg, volatile unsigned long
 	}
 
 	/* Hook into PCI interrupt */
-	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x00_irq_handler);
+	set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x00_irq_handler);
 }
 
 /*************************************************************************

arch/arm/mach-ixp2000/ixdp2x01.c

@@ -127,7 +127,7 @@ void __init ixdp2x01_init_irq(void)
 	}
 
 	/* Hook into PCI interrupts */
-	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x01_irq_handler);
+	set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x01_irq_handler);
 }
 
 

arch/arm/mach-ixp23xx/core.c

@@ -271,7 +271,7 @@ static void pci_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *
 	}
 
 	int_desc = irq_desc + irqno;
-	int_desc->handle(irqno, int_desc, regs);
+	desc_handle_irq(irqno, int_desc, regs);
 
 	desc->chip->unmask(irq);
 }

arch/arm/mach-ixp23xx/ixdp2351.c

@@ -19,6 +19,7 @@
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/bitops.h>
@@ -36,7 +37,6 @@
 #include <asm/memory.h>
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
-#include <asm/irq.h>
 #include <asm/system.h>
 #include <asm/tlbflush.h>
 #include <asm/pgtable.h>
@@ -74,7 +74,7 @@ static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct
 			int cpld_irq =
 				IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
 			cpld_desc = irq_desc + cpld_irq;
-			cpld_desc->handle(cpld_irq, cpld_desc, regs);
+			desc_handle_irq(cpld_irq, cpld_desc, regs);
 		}
 	}
 
@@ -111,7 +111,7 @@ static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct
 			int cpld_irq =
 				IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
 			cpld_desc = irq_desc + cpld_irq;
-			cpld_desc->handle(cpld_irq, cpld_desc, regs);
+			desc_handle_irq(cpld_irq, cpld_desc, regs);
 		}
 	}
 
@@ -158,8 +158,8 @@ void ixdp2351_init_irq(void)
 		}
 	}
 
-	set_irq_chained_handler(IRQ_IXP23XX_INTA, &ixdp2351_inta_handler);
-	set_irq_chained_handler(IRQ_IXP23XX_INTB, &ixdp2351_intb_handler);
+	set_irq_chained_handler(IRQ_IXP23XX_INTA, ixdp2351_inta_handler);
+	set_irq_chained_handler(IRQ_IXP23XX_INTB, ixdp2351_intb_handler);
 }
 
 /*

arch/arm/mach-ixp4xx/coyote-pci.c

@@ -17,6 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 
 #include <asm/mach-types.h>
 #include <asm/hardware.h>

arch/arm/mach-ixp4xx/ixdp425-pci.c

@@ -17,6 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 #include <linux/delay.h>
 
 #include <asm/mach/pci.h>

arch/arm/mach-ixp4xx/ixdpg425-pci.c

@@ -16,10 +16,10 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 
 #include <asm/mach-types.h>
 #include <asm/hardware.h>
-#include <asm/irq.h>
 
 #include <asm/mach/pci.h>
 

arch/arm/mach-ixp4xx/nas100d-pci.c

@@ -17,6 +17,7 @@
 
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 
 #include <asm/mach/pci.h>
 #include <asm/mach-types.h>

arch/arm/mach-ixp4xx/nas100d-power.c

@@ -17,9 +17,9 @@
  *
  */
 
-#include <linux/module.h>
-#include <linux/reboot.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
 #include <linux/reboot.h>
 
 #include <asm/mach-types.h>

arch/arm/mach-l7200/core.c

@@ -7,6 +7,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 #include <linux/device.h>
 
 #include <asm/types.h>

arch/arm/mach-lh7a40x/arch-lpd7a40x.c

@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/hardware.h>
 #include <asm/setup.h>

arch/arm/mach-lh7a40x/time.c

@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/time.h>
 
 #include <asm/hardware.h>

arch/arm/mach-omap1/board-osk.c

@@ -29,7 +29,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>

arch/arm/mach-omap1/serial.c

@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 #include <linux/delay.h>
 #include <linux/serial.h>
 #include <linux/tty.h>

arch/arm/mach-pxa/idp.c

@@ -18,6 +18,7 @@
 
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/fb.h>
 

arch/arm/mach-pxa/sharpsl_pm.c

@@ -18,11 +18,11 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/platform_device.h>
 
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
-#include <asm/irq.h>
 #include <asm/apm.h>
 #include <asm/arch/pm.h>
 #include <asm/arch/pxa-regs.h>

arch/arm/mach-s3c2410/bast-irq.c

@@ -136,8 +136,8 @@ bast_irq_pc104_demux(unsigned int irq,
 		for (i = 0; stat != 0; i++, stat >>= 1) {
 			if (stat & 1) {
 				irqno = bast_pc104_irqs[i];
-
-				desc_handle_irq(irqno, irq_desc + irqno, regs);
+				desc = irq_desc + irqno;
+				desc_handle_irq(irqno, desc, regs);
 			}
 		}
 	}
@@ -156,7 +156,7 @@ static __init int bast_irq_init(void)
 
 		set_irq_chained_handler(IRQ_ISA, bast_irq_pc104_demux);
 
-		/* reigster our IRQs */
+		/* register our IRQs */
 
 		for (i = 0; i < 4; i++) {
 			unsigned int irqno = bast_pc104_irqs[i];

arch/arm/mach-s3c2410/time.c

@@ -22,6 +22,7 @@
 #include <linux/sched.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 

arch/arm/mach-sa1100/cerf.c

@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/tty.h>
 #include <linux/platform_device.h>
+#include <linux/irq.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 

arch/arm/mach-sa1100/h3600.c

@@ -835,7 +835,7 @@ static void __init h3800_init_irq(void)
 	}
 #endif
 	set_irq_type(IRQ_GPIO_H3800_ASIC, IRQT_RISING);
-	set_irq_chained_handler(IRQ_GPIO_H3800_ASIC, &h3800_IRQ_demux);
+	set_irq_chained_handler(IRQ_GPIO_H3800_ASIC, h3800_IRQ_demux);
 }
 
 

arch/arm/mach-sa1100/irq.c

@@ -11,12 +11,13 @@
  */
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/ioport.h>
 #include <linux/ptrace.h>
 #include <linux/sysdev.h>
 
 #include <asm/hardware.h>
-#include <asm/irq.h>
 #include <asm/mach/irq.h>
 
 #include "generic.h"

arch/arm/mach-sa1100/pleb.c

@@ -7,6 +7,7 @@
 #include <linux/tty.h>
 #include <linux/ioport.h>
 #include <linux/platform_device.h>
+#include <linux/irq.h>
 
 #include <linux/mtd/partitions.h>
 

arch/arm/mach-sa1100/time.c

@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/timex.h>
 #include <linux/signal.h>
 

arch/arm/mach-shark/core.c

@@ -6,6 +6,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/sched.h>
 #include <linux/serial_8250.h>
 

arch/arm/plat-omap/dma.c

@@ -24,9 +24,9 @@
 #include <linux/spinlock.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/system.h>
-#include <asm/irq.h>
 #include <asm/hardware.h>
 #include <asm/dma.h>
 #include <asm/io.h>

arch/arm/plat-omap/gpio.c

@@ -783,7 +783,7 @@ static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc,
 
 	desc->chip->ack(irq);
 
-	bank = (struct gpio_bank *) desc->data;
+	bank = get_irq_data(irq);
 	if (bank->method == METHOD_MPUIO)
 		isr_reg = bank->base + OMAP_MPUIO_GPIO_INT;
 #ifdef CONFIG_ARCH_OMAP15XX

drivers/input/touchscreen/corgi_ts.c

@@ -17,7 +17,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-//#include <asm/irq.h>
+#include <linux/irq.h>
 
 #include <asm/arch/sharpsl.h>
 #include <asm/arch/hardware.h>

drivers/pcmcia/soc_common.c

@@ -38,12 +38,12 @@
 #include <linux/timer.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/spinlock.h>
 #include <linux/cpufreq.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
-#include <asm/irq.h>
 #include <asm/system.h>
 
 #include "soc_common.h"

include/asm-arm/dyntick.h

+#ifndef _ASMARM_DYNTICK_H
+#define _ASMARM_DYNTICK_H
+
+#include <asm/mach/time.h>
+
+#endif /* _ASMARM_DYNTICK_H */

include/asm-arm/hw_irq.h

+/*
+ * Nothing to see here yet
+ */
+#ifndef _ARCH_ARM_HW_IRQ_H
+#define _ARCH_ARM_HW_IRQ_H
+
+#include <asm/mach/irq.h>
+
+#endif

include/asm-arm/irq.h

@@ -21,18 +21,13 @@
 
 struct irqaction;
 
-extern void disable_irq_nosync(unsigned int);
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
 /*
- * These correspond with the SA_TRIGGER_* defines, and therefore the
- * IORESOURCE_IRQ_* defines.
+ * Migration helpers
  */
-#define __IRQT_RISEDGE	(1 << 0)
-#define __IRQT_FALEDGE	(1 << 1)
-#define __IRQT_HIGHLVL	(1 << 2)
-#define __IRQT_LOWLVL	(1 << 3)
+#define __IRQT_FALEDGE	IRQ_TYPE_EDGE_FALLING
+#define __IRQT_RISEDGE	IRQ_TYPE_EDGE_RISING
+#define __IRQT_LOWLVL	IRQ_TYPE_LEVEL_LOW
+#define __IRQT_HIGHLVL	IRQ_TYPE_LEVEL_HIGH
 
 #define IRQT_NOEDGE	(0)
 #define IRQT_RISING	(__IRQT_RISEDGE)
@@ -40,12 +35,7 @@ extern void enable_irq(unsigned int);
 #define IRQT_BOTHEDGE	(__IRQT_RISEDGE|__IRQT_FALEDGE)
 #define IRQT_LOW	(__IRQT_LOWLVL)
 #define IRQT_HIGH	(__IRQT_HIGHLVL)
-#define IRQT_PROBE	(1 << 4)
-
-int set_irq_type(unsigned int irq, unsigned int type);
-void disable_irq_wake(unsigned int irq);
-void enable_irq_wake(unsigned int irq);
-int setup_irq(unsigned int, struct irqaction *);
+#define IRQT_PROBE	IRQ_TYPE_PROBE
 
 extern void migrate_irqs(void);
 #endif

include/asm-arm/mach/irq.h

@@ -10,95 +10,9 @@
 #ifndef __ASM_ARM_MACH_IRQ_H
 #define __ASM_ARM_MACH_IRQ_H
 
-struct irqdesc;
-struct pt_regs;
-struct seq_file;
-
-typedef void (*irq_handler_t)(unsigned int, struct irqdesc *, struct pt_regs *);
-typedef void (*irq_control_t)(unsigned int);
-
-struct irqchip {
-	/*
-	 * Acknowledge the IRQ.
-	 * If this is a level-based IRQ, then it is expected to mask the IRQ
-	 * as well.
-	 */
-	void (*ack)(unsigned int);
-	/*
-	 * Mask the IRQ in hardware.
-	 */
-	void (*mask)(unsigned int);
-	/*
-	 * Unmask the IRQ in hardware.
-	 */
-	void (*unmask)(unsigned int);
-	/*
-	 * Ask the hardware to re-trigger the IRQ.
-	 * Note: This method _must_ _not_ call the interrupt handler.
-	 * If you are unable to retrigger the interrupt, do not
-	 * provide a function, or if you do, return non-zero.
-	 */
-	int (*retrigger)(unsigned int);
-	/*
-	 * Set the type of the IRQ.
-	 */
-	int (*set_type)(unsigned int, unsigned int);
-	/*
-	 * Set wakeup-enable on the selected IRQ
-	 */
-	int (*set_wake)(unsigned int, unsigned int);
-
-#ifdef CONFIG_SMP
-	/*
-	 * Route an interrupt to a CPU
-	 */
-	void (*set_cpu)(struct irqdesc *desc, unsigned int irq, unsigned int cpu);
-#endif
-};
-
-struct irqdesc {
-	irq_handler_t	handle;
-	struct irqchip	*chip;
-	struct irqaction *action;
-	struct list_head pend;
-	void __iomem	*base;
-	void		*data;
-	unsigned int	disable_depth;
-
-	unsigned int	triggered: 1;		/* IRQ has occurred	      */
-	unsigned int	running  : 1;		/* IRQ is running             */
-	unsigned int	pending  : 1;		/* IRQ is pending	      */
-	unsigned int	probing  : 1;		/* IRQ in use for a probe     */
-	unsigned int	probe_ok : 1;		/* IRQ can be used for probe  */
-	unsigned int	valid    : 1;		/* IRQ claimable	      */
-	unsigned int	noautoenable : 1;	/* don't automatically enable IRQ */
-	unsigned int	unused   :25;
-
-	unsigned int	irqs_unhandled;
-	struct proc_dir_entry *procdir;
-
-#ifdef CONFIG_SMP
-	cpumask_t	affinity;
-	unsigned int	cpu;
-#endif
-
-	/*
-	 * IRQ lock detection
-	 */
-	unsigned int	lck_cnt;
-	unsigned int	lck_pc;
-	unsigned int	lck_jif;
-};
-
-extern struct irqdesc irq_desc[];
+#include <linux/irq.h>
 
-/*
- * Helpful inline function for calling irq descriptor handlers.
- */
-static inline void desc_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
-{
-	desc->handle(irq, desc, regs);
-}
+struct seq_file;
 
 /*
  * This is internal.  Do not use it.
@@ -106,18 +20,22 @@ static inline void desc_handle_irq(unsigned int irq, struct irqdesc *desc, struc
 extern void (*init_arch_irq)(void);
 extern void init_FIQ(void);
 extern int show_fiq_list(struct seq_file *, void *);
-void __set_irq_handler(unsigned int irq, irq_handler_t, int);
 
 /*
- * External stuff.
+ * Function wrappers
+ */
+#define set_irq_chipdata(irq, d)	set_irq_chip_data(irq, d)
+#define get_irq_chipdata(irq)		get_irq_chip_data(irq)
+
+/*
+ * Obsolete inline function for calling irq descriptor handlers.
  */
-#define set_irq_handler(irq,handler)		__set_irq_handler(irq,handler,0)
-#define set_irq_chained_handler(irq,handler)	__set_irq_handler(irq,handler,1)
-#define set_irq_data(irq,d)			do { irq_desc[irq].data = d; } while (0)
-#define set_irq_chipdata(irq,d)			do { irq_desc[irq].base = d; } while (0)
-#define get_irq_chipdata(irq)			(irq_desc[irq].base)
+static inline void desc_handle_irq(unsigned int irq, struct irq_desc *desc,
+				   struct pt_regs *regs)
+{
+	desc->handle_irq(irq, desc, regs);
+}
 
-void set_irq_chip(unsigned int irq, struct irqchip *);
 void set_irq_flags(unsigned int irq, unsigned int flags);
 
 #define IRQF_VALID	(1 << 0)
@@ -125,12 +43,25 @@ void set_irq_flags(unsigned int irq, unsigned int flags);
 #define IRQF_NOAUTOEN	(1 << 2)
 
 /*
- * Built-in IRQ handlers.
+ * This is for easy migration, but should be changed in the source
  */
-void do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
-void do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
-void do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
-void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
-void dummy_mask_unmask_irq(unsigned int irq);
+#define do_level_IRQ	handle_level_irq
+#define do_edge_IRQ	handle_edge_irq
+#define do_simple_IRQ	handle_simple_irq
+#define irqdesc		irq_desc
+#define irqchip		irq_chip
+
+#define do_bad_IRQ(irq,desc,regs)			\
+do {							\
+	spin_lock(&desc->lock);				\
+	handle_bad_irq(irq, desc, regs);		\
+	spin_unlock(&desc->lock);			\
+} while(0)
+
+extern unsigned long irq_err_count;
+static inline void ack_bad_irq(int irq)
+{
+	irq_err_count++;
+}
 
 #endif

include/linux/irq.h

@@ -347,8 +347,9 @@ extern int noirqdebug_setup(char *str);
 /* Checks whether the interrupt can be requested by request_irq(): */
 extern int can_request_irq(unsigned int irq, unsigned long irqflags);
 
-/* Dummy irq-chip implementation: */
+/* Dummy irq-chip implementations: */
 extern struct irq_chip no_irq_chip;
+extern struct irq_chip dummy_irq_chip;
 
 extern void
 set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,

kernel/irq/chip.c

@@ -462,9 +462,18 @@ __set_irq_handler(unsigned int irq,
 	if (!handle)
 		handle = handle_bad_irq;
 
-	if (is_chained && desc->chip == &no_irq_chip)
-		printk(KERN_WARNING "Trying to install "
-		       "chained interrupt type for IRQ%d\n", irq);
+	if (desc->chip == &no_irq_chip) {
+		printk(KERN_WARNING "Trying to install %sinterrupt handler "
+		       "for IRQ%d\n", is_chained ? "chained " : " ", irq);
+		/*
+		 * Some ARM implementations install a handler for really dumb
+		 * interrupt hardware without setting an irq_chip. This worked
+		 * with the ARM no_irq_chip but the check in setup_irq would
+		 * prevent us to setup the interrupt at all. Switch it to
+		 * dummy_irq_chip for easy transition.
+		 */
+		desc->chip = &dummy_irq_chip;
+	}
 
 	spin_lock_irqsave(&desc->lock, flags);
 

kernel/irq/handle.c

@@ -16,6 +16,10 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 
+#if defined(CONFIG_NO_IDLE_HZ) && defined(CONFIG_ARM)
+#include <asm/dyntick.h>
+#endif
+
 #include "internals.h"
 
 /**
@@ -91,6 +95,22 @@ struct irq_chip no_irq_chip = {
 	.end		= noop,
 };
 
+/*
+ * Generic dummy implementation which can be used for
+ * real dumb interrupt sources
+ */
+struct irq_chip dummy_irq_chip = {
+	.name		= "dummy",
+	.startup	= noop_ret,
+	.shutdown	= noop,
+	.enable		= noop,
+	.disable	= noop,
+	.ack		= noop,
+	.mask		= noop,
+	.unmask		= noop,
+	.end		= noop,
+};
+
 /*
  * Special, empty irq handler:
  */
@@ -113,6 +133,15 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
 	irqreturn_t ret, retval = IRQ_NONE;
 	unsigned int status = 0;
 
+#if defined(CONFIG_NO_IDLE_HZ) && defined(CONFIG_ARM)
+	if (!(action->flags & SA_TIMER) && system_timer->dyn_tick != NULL) {
+		write_seqlock(&xtime_lock);
+		if (system_timer->dyn_tick->state & DYN_TICK_ENABLED)
+			system_timer->dyn_tick->handler(irq, 0, regs);
+		write_sequnlock(&xtime_lock);
+	}
+#endif
+
 	if (!(action->flags & IRQF_DISABLED))
 		local_irq_enable();