Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "This contains:

   - a series of fixes for interrupt drivers to prevent a potential race
     when installing a chained interrupt handler

   - a fix for cpumask pointer misuse

   - a fix for using the wrong interrupt number from struct irq_data

   - removal of unused code and outdated comments

   - a few new helper functions which allow us to cleanup the interrupt
     handling code further in 4.3

   I decided against doing the cleanup at the end of this merge window
   and rather do the preparatory steps for 4.3, so we can run the final
   ABI change at the end of the 4.3 merge window with less risk"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
  ARM/LPC32xx: Use irq not hwirq for __irq_set_handler_locked()
  genirq: Implement irq_set_handler_locked()/irq_set_chip_handler_name_locked()
  genirq: Introduce helper irq_desc_get_irq()
  genirq: Remove irq_node()
  genirq: Clean up outdated comments related to include/linux/irqdesc.h
  mn10300: Fix incorrect use of irq_data->affinity
  MIPS/ralink: Fix race in installing chained IRQ handler
  MIPS/pci: Fix race in installing chained IRQ handler
  MIPS/ath25: Fix race in installing chained IRQ handler
  MIPS/ath25: Fix race in installing chained IRQ handler
  m68k/psc: Fix race in installing chained IRQ handler
  avr32/at32ap: Fix race in installing chained IRQ handler
  sh/intc: Fix race in installing chained IRQ handler
  sh/intc: Fix potential race in installing chained IRQ handler
  pinctrl/sun4i: Fix race in installing chained IRQ handler
  pinctrl/samsung: Fix race in installing chained IRQ handler
  pinctrl/samsung: Fix race in installing chained IRQ handler
  pinctrl/exynos: Fix race in installing chained IRQ handler
  pinctrl/st: Fix race in installing chained IRQ handler
  pinctrl/adi2: Fix race in installing chained IRQ handler
  ...

25 files changed, 95 insertions, 67 deletions

diff --git a/arch/arm/mach-lpc32xx/irq.c b/arch/arm/mach-lpc32xx/irq.c
index 9ecb8f9..d4f7dc8 100644
--- a/arch/arm/mach-lpc32xx/irq.c
+++ b/arch/arm/mach-lpc32xx/irq.c
@@ -283,25 +283,25 @@ static int lpc32xx_set_irq_type(struct irq_data *d, unsigned int type)
 	case IRQ_TYPE_EDGE_RISING:
 		/* Rising edge sensitive */
 		__lpc32xx_set_irq_type(d->hwirq, 1, 1);
-		__irq_set_handler_locked(d->hwirq, handle_edge_irq);
+		__irq_set_handler_locked(d->irq, handle_edge_irq);
 		break;
 
 	case IRQ_TYPE_EDGE_FALLING:
 		/* Falling edge sensitive */
 		__lpc32xx_set_irq_type(d->hwirq, 0, 1);
-		__irq_set_handler_locked(d->hwirq, handle_edge_irq);
+		__irq_set_handler_locked(d->irq, handle_edge_irq);
 		break;
 
 	case IRQ_TYPE_LEVEL_LOW:
 		/* Low level sensitive */
 		__lpc32xx_set_irq_type(d->hwirq, 0, 0);
-		__irq_set_handler_locked(d->hwirq, handle_level_irq);
+		__irq_set_handler_locked(d->irq, handle_level_irq);
 		break;
 
 	case IRQ_TYPE_LEVEL_HIGH:
 		/* High level sensitive */
 		__lpc32xx_set_irq_type(d->hwirq, 1, 0);
-		__irq_set_handler_locked(d->hwirq, handle_level_irq);
+		__irq_set_handler_locked(d->irq, handle_level_irq);
 		break;
 
 	/* Other modes are not supported */
diff --git a/arch/avr32/mach-at32ap/extint.c b/arch/avr32/mach-at32ap/extint.c
index cfb298d..2d48b6a 100644
--- a/arch/avr32/mach-at32ap/extint.c
+++ b/arch/avr32/mach-at32ap/extint.c
@@ -231,8 +231,7 @@ static int __init eic_probe(struct platform_device *pdev)
 		irq_set_chip_data(eic->first_irq + i, eic);
 	}
 
-	irq_set_chained_handler(int_irq, demux_eic_irq);
-	irq_set_handler_data(int_irq, eic);
+	irq_set_chained_handler_and_data(int_irq, demux_eic_irq, eic);
 
 	if (pdev->id == 0) {
 		nmi_eic = eic;
diff --git a/arch/m68k/mac/psc.c b/arch/m68k/mac/psc.c
index 835fa04..272dde4 100644
--- a/arch/m68k/mac/psc.c
+++ b/arch/m68k/mac/psc.c
@@ -148,14 +148,10 @@ static void psc_irq(unsigned int irq, struct irq_desc *desc)
 
 void __init psc_register_interrupts(void)
 {
-	irq_set_chained_handler(IRQ_AUTO_3, psc_irq);
-	irq_set_handler_data(IRQ_AUTO_3, (void *)0x30);
-	irq_set_chained_handler(IRQ_AUTO_4, psc_irq);
-	irq_set_handler_data(IRQ_AUTO_4, (void *)0x40);
-	irq_set_chained_handler(IRQ_AUTO_5, psc_irq);
-	irq_set_handler_data(IRQ_AUTO_5, (void *)0x50);
-	irq_set_chained_handler(IRQ_AUTO_6, psc_irq);
-	irq_set_handler_data(IRQ_AUTO_6, (void *)0x60);
+	irq_set_chained_handler_and_data(IRQ_AUTO_3, psc_irq, (void *)0x30);
+	irq_set_chained_handler_and_data(IRQ_AUTO_4, psc_irq, (void *)0x40);
+	irq_set_chained_handler_and_data(IRQ_AUTO_5, psc_irq, (void *)0x50);
+	irq_set_chained_handler_and_data(IRQ_AUTO_6, psc_irq, (void *)0x60);
 }
 
 void psc_irq_enable(int irq) {
diff --git a/arch/mips/ath25/ar2315.c b/arch/mips/ath25/ar2315.c
index 8742e1c..ec9a371 100644
--- a/arch/mips/ath25/ar2315.c
+++ b/arch/mips/ath25/ar2315.c
@@ -161,8 +161,8 @@ void __init ar2315_arch_init_irq(void)
 	irq = irq_create_mapping(domain, AR2315_MISC_IRQ_AHB);
 	setup_irq(irq, &ar2315_ahb_err_interrupt);
 
-	irq_set_chained_handler(AR2315_IRQ_MISC, ar2315_misc_irq_handler);
-	irq_set_handler_data(AR2315_IRQ_MISC, domain);
+	irq_set_chained_handler_and_data(AR2315_IRQ_MISC,
+					 ar2315_misc_irq_handler, domain);
 
 	ar2315_misc_irq_domain = domain;
 }
diff --git a/arch/mips/ath25/ar5312.c b/arch/mips/ath25/ar5312.c
index 094b938..e63e38f 100644
--- a/arch/mips/ath25/ar5312.c
+++ b/arch/mips/ath25/ar5312.c
@@ -156,8 +156,8 @@ void __init ar5312_arch_init_irq(void)
 	irq = irq_create_mapping(domain, AR5312_MISC_IRQ_AHB_PROC);
 	setup_irq(irq, &ar5312_ahb_err_interrupt);
 
-	irq_set_chained_handler(AR5312_IRQ_MISC, ar5312_misc_irq_handler);
-	irq_set_handler_data(AR5312_IRQ_MISC, domain);
+	irq_set_chained_handler_and_data(AR5312_IRQ_MISC,
+					 ar5312_misc_irq_handler, domain);
 
 	ar5312_misc_irq_domain = domain;
 }
diff --git a/arch/mips/pci/pci-ar2315.c b/arch/mips/pci/pci-ar2315.c
index dadb303..f8d0acb 100644
--- a/arch/mips/pci/pci-ar2315.c
+++ b/arch/mips/pci/pci-ar2315.c
@@ -384,8 +384,8 @@ static void ar2315_pci_irq_init(struct ar2315_pci_ctrl *apc)
 
 	apc->irq_ext = irq_create_mapping(apc->domain, AR2315_PCI_IRQ_EXT);
 
-	irq_set_chained_handler(apc->irq, ar2315_pci_irq_handler);
-	irq_set_handler_data(apc->irq, apc);
+	irq_set_chained_handler_and_data(apc->irq, ar2315_pci_irq_handler,
+					 apc);
 
 	/* Clear any pending Abort or external Interrupts
 	 * and enable interrupt processing */
diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
index da301e0..53707aa 100644
--- a/arch/mips/ralink/irq.c
+++ b/arch/mips/ralink/irq.c
@@ -184,8 +184,7 @@ static int __init intc_of_init(struct device_node *node,
 
 	rt_intc_w32(INTC_INT_GLOBAL, INTC_REG_ENABLE);
 
-	irq_set_chained_handler(irq, ralink_intc_irq_handler);
-	irq_set_handler_data(irq, domain);
+	irq_set_chained_handler_and_data(irq, ralink_intc_irq_handler, domain);
 
 	/* tell the kernel which irq is used for performance monitoring */
 	rt_perfcount_irq = irq_create_mapping(domain, 9);
diff --git a/arch/mn10300/kernel/irq.c b/arch/mn10300/kernel/irq.c
index 6ab3b73..480de70 100644
--- a/arch/mn10300/kernel/irq.c
+++ b/arch/mn10300/kernel/irq.c
@@ -320,11 +320,11 @@ void migrate_irqs(void)
 		if (irqd_is_per_cpu(data))
 			continue;
 
-		if (cpumask_test_cpu(self, &data->affinity) &&
+		if (cpumask_test_cpu(self, data->affinity) &&
 		    !cpumask_intersects(&irq_affinity[irq], cpu_online_mask)) {
 			int cpu_id;
 			cpu_id = cpumask_first(cpu_online_mask);
-			cpumask_set_cpu(cpu_id, &data->affinity);
+			cpumask_set_cpu(cpu_id, data->affinity);
 		}
 		/* We need to operate irq_affinity_online atomically. */
 		arch_local_cli_save(flags);
@@ -335,7 +335,7 @@ void migrate_irqs(void)
 			GxICR(irq) = x & GxICR_LEVEL;
 			tmp = GxICR(irq);
 
-			new = cpumask_any_and(&data->affinity,
+			new = cpumask_any_and(data->affinity,
 					      cpu_online_mask);
 			irq_affinity_online[irq] = new;
 
diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
index 8333f87..40343fa 100644
--- a/drivers/gpio/gpio-bcm-kona.c
+++ b/drivers/gpio/gpio-bcm-kona.c
@@ -657,8 +657,9 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev)
 	}
 	for (i = 0; i < kona_gpio->num_bank; i++) {
 		bank = &kona_gpio->banks[i];
-		irq_set_chained_handler(bank->irq, bcm_kona_gpio_irq_handler);
-		irq_set_handler_data(bank->irq, bank);
+		irq_set_chained_handler_and_data(bank->irq,
+						 bcm_kona_gpio_irq_handler,
+						 bank);
 	}
 
 	spin_lock_init(&kona_gpio->lock);
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 58faf04..55fa985 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -348,8 +348,8 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 	irq_gc->chip_types[1].handler = handle_edge_irq;
 
 	if (!pp->irq_shared) {
-		irq_set_chained_handler(pp->irq, dwapb_irq_handler);
-		irq_set_handler_data(pp->irq, gpio);
+		irq_set_chained_handler_and_data(pp->irq, dwapb_irq_handler,
+						 gpio);
 	} else {
 		/*
 		 * Request a shared IRQ since where MFD would have devices
diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c
index 01acf0a..7bcfb87 100644
--- a/drivers/gpio/gpio-msic.c
+++ b/drivers/gpio/gpio-msic.c
@@ -309,8 +309,7 @@ static int platform_msic_gpio_probe(struct platform_device *pdev)
 					 &msic_irqchip,
 					 handle_simple_irq);
 	}
-	irq_set_chained_handler(mg->irq, msic_gpio_irq_handler);
-	irq_set_handler_data(mg->irq, mg);
+	irq_set_chained_handler_and_data(mg->irq, msic_gpio_irq_handler, mg);
 
 	return 0;
 err:
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
index 977bd3a..120df5c 100644
--- a/drivers/mfd/asic3.c
+++ b/drivers/mfd/asic3.c
@@ -417,9 +417,8 @@ static int __init asic3_irq_probe(struct platform_device *pdev)
 	asic3_write_register(asic, ASIC3_OFFSET(INTR, INT_MASK),
 			     ASIC3_INTMASK_GINTMASK);
 
-	irq_set_chained_handler(asic->irq_nr, asic3_irq_demux);
+	irq_set_chained_handler_and_data(asic->irq_nr, asic3_irq_demux, asic);
 	irq_set_irq_type(asic->irq_nr, IRQ_TYPE_EDGE_RISING);
-	irq_set_handler_data(asic->irq_nr, asic);
 
 	return 0;
 }
diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c
index b75d684..734da58 100644
--- a/drivers/pci/host/pci-keystone.c
+++ b/drivers/pci/host/pci-keystone.c
@@ -221,10 +221,9 @@ static void ks_pcie_setup_interrupts(struct keystone_pcie *ks_pcie)
 	/* MSI IRQ */
 	if (IS_ENABLED(CONFIG_PCI_MSI)) {
 		for (i = 0; i < ks_pcie->num_msi_host_irqs; i++) {
-			irq_set_chained_handler(ks_pcie->msi_host_irqs[i],
-						ks_pcie_msi_irq_handler);
-			irq_set_handler_data(ks_pcie->msi_host_irqs[i],
-					     ks_pcie);
+			irq_set_chained_handler_and_data(ks_pcie->msi_host_irqs[i],
+							 ks_pcie_msi_irq_handler,
+							 ks_pcie);
 		}
 	}
 }
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index c4fc77a..ad1ea16 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -1351,8 +1351,7 @@ int mtk_pctrl_init(struct platform_device *pdev,
 		set_irq_flags(virq, IRQF_VALID);
 	};
 
-	irq_set_chained_handler(irq, mtk_eint_irq_handler);
-	irq_set_handler_data(irq, pctl);
+	irq_set_chained_handler_and_data(irq, mtk_eint_irq_handler, pctl);
 	set_irq_flags(irq, IRQF_VALID);
 	return 0;
 
diff --git a/drivers/pinctrl/pinctrl-adi2.c b/drivers/pinctrl/pinctrl-adi2.c
index 873433d..c3c3d23 100644
--- a/drivers/pinctrl/pinctrl-adi2.c
+++ b/drivers/pinctrl/pinctrl-adi2.c
@@ -865,8 +865,8 @@ static int adi_gpio_pint_probe(struct platform_device *pdev)
 	pint->pint_map_port = adi_pint_map_port;
 	platform_set_drvdata(pdev, pint);
 
-	irq_set_chained_handler(pint->irq, adi_gpio_handle_pint_irq);
-	irq_set_handler_data(pint->irq, pint);
+	irq_set_chained_handler_and_data(pint->irq, adi_gpio_handle_pint_irq,
+					 pint);
 
 	list_add_tail(&pint->node, &adi_pint_list);
 
diff --git a/drivers/pinctrl/pinctrl-st.c b/drivers/pinctrl/pinctrl-st.c
index d34ac87..c262e5f 100644
--- a/drivers/pinctrl/pinctrl-st.c
+++ b/drivers/pinctrl/pinctrl-st.c
@@ -1661,8 +1661,8 @@ static int st_pctl_probe_dt(struct platform_device *pdev,
 		if (IS_ERR(info->irqmux_base))
 			return PTR_ERR(info->irqmux_base);
 
-		irq_set_chained_handler(irq, st_gpio_irqmux_handler);
-		irq_set_handler_data(irq, info);
+		irq_set_chained_handler_and_data(irq, st_gpio_irqmux_handler,
+						 info);
 
 	}
 
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index 0b7afa5..b18dabb 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -563,8 +563,8 @@ static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
 		return -ENOMEM;
 	}
 
-	irq_set_chained_handler(irq, exynos_irq_demux_eint16_31);
-	irq_set_handler_data(irq, muxed_data);
+	irq_set_chained_handler_and_data(irq, exynos_irq_demux_eint16_31,
+					 muxed_data);
 
 	bank = d->pin_banks;
 	idx = 0;
diff --git a/drivers/pinctrl/samsung/pinctrl-s3c24xx.c b/drivers/pinctrl/samsung/pinctrl-s3c24xx.c
index f1993f42..01b43db 100644
--- a/drivers/pinctrl/samsung/pinctrl-s3c24xx.c
+++ b/drivers/pinctrl/samsung/pinctrl-s3c24xx.c
@@ -514,8 +514,7 @@ static int s3c24xx_eint_init(struct samsung_pinctrl_drv_data *d)
 		}
 
 		eint_data->parents[i] = irq;
-		irq_set_chained_handler(irq, handlers[i]);
-		irq_set_handler_data(irq, eint_data);
+		irq_set_chained_handler_and_data(irq, handlers[i], eint_data);
 	}
 
 	bank = d->pin_banks;
diff --git a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
index 7756c1e..ec8cc3b 100644
--- a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
+++ b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
@@ -506,8 +506,7 @@ static int s3c64xx_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
 		data->domains[nr_domains++] = bank->irq_domain;
 	}
 
-	irq_set_chained_handler(d->irq, s3c64xx_eint_gpio_irq);
-	irq_set_handler_data(d->irq, data);
+	irq_set_chained_handler_and_data(d->irq, s3c64xx_eint_gpio_irq, data);
 
 	return 0;
 }
@@ -731,8 +730,9 @@ static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
 			return -ENXIO;
 		}
 
-		irq_set_chained_handler(irq, s3c64xx_eint0_handlers[i]);
-		irq_set_handler_data(irq, data);
+		irq_set_chained_handler_and_data(irq,
+						 s3c64xx_eint0_handlers[i],
+						 data);
 	}
 
 	bank = d->pin_banks;
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index d7857c7..f09573e 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -1005,9 +1005,9 @@ int sunxi_pinctrl_init(struct platform_device *pdev,
 		writel(0xffffffff,
 			pctl->membase + sunxi_irq_status_reg_from_bank(i));
 
-		irq_set_chained_handler(pctl->irq[i],
-					sunxi_pinctrl_irq_handler);
-		irq_set_handler_data(pctl->irq[i], pctl);
+		irq_set_chained_handler_and_data(pctl->irq[i],
+						 sunxi_pinctrl_irq_handler,
+						 pctl);
 	}
 
 	dev_info(&pdev->dev, "initialized sunXi PIO driver\n");
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 81f2298..156b790 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -366,8 +366,9 @@ int __init register_intc_controller(struct intc_desc *desc)
 
 			/* redirect this interrupts to the first one */
 			irq_set_chip(irq2, &dummy_irq_chip);
-			irq_set_chained_handler(irq2, intc_redirect_irq);
-			irq_set_handler_data(irq2, (void *)irq);
+			irq_set_chained_handler_and_data(irq2,
+							 intc_redirect_irq,
+							 (void *)irq);
 		}
 	}
 
diff --git a/drivers/sh/intc/virq.c b/drivers/sh/intc/virq.c
index f30ac93..f5f1b82 100644
--- a/drivers/sh/intc/virq.c
+++ b/drivers/sh/intc/virq.c
@@ -243,8 +243,9 @@ restart:
 		 */
 		irq_set_nothread(irq);
 
-		irq_set_chained_handler(entry->pirq, intc_virq_handler);
+		/* Set handler data before installing the handler */
 		add_virq_to_pirq(entry->pirq, irq);
+		irq_set_chained_handler(entry->pirq, intc_virq_handler);
 
 		radix_tree_tag_clear(&d->tree, entry->enum_id,
 				     INTC_TAG_VIRQ_NEEDS_ALLOC);
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 81214916..92188b0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -407,7 +407,6 @@ enum {
 	IRQCHIP_EOI_THREADED		= (1 <<  6),
 };
 
-/* This include will go away once we isolated irq_desc usage to core code */
 #include <linux/irqdesc.h>
 
 /*
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index c52d148..624a668 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -3,9 +3,6 @@
 
 /*
  * Core internal functions to deal with irq descriptors
- *
- * This include will move to kernel/irq once we cleaned up the tree.
- * For now it's included from <linux/irq.h>
  */
 
 struct irq_affinity_notify;
@@ -103,6 +100,11 @@ static inline struct irq_desc *irq_data_to_desc(struct irq_data *data)
 #endif
 }
 
+static inline unsigned int irq_desc_get_irq(struct irq_desc *desc)
+{
+	return desc->irq_data.irq;
+}
+
 static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc)
 {
 	return &desc->irq_data;
@@ -188,6 +190,47 @@ __irq_set_chip_handler_name_locked(unsigned int irq, struct irq_chip *chip,
 	desc->name = name;
 }
 
+/**
+ * irq_set_handler_locked - Set irq handler from a locked region
+ * @data:	Pointer to the irq_data structure which identifies the irq
+ * @handler:	Flow control handler function for this interrupt
+ *
+ * Sets the handler in the irq descriptor associated to @data.
+ *
+ * Must be called with irq_desc locked and valid parameters. Typical
+ * call site is the irq_set_type() callback.
+ */
+static inline void irq_set_handler_locked(struct irq_data *data,
+					  irq_flow_handler_t handler)
+{
+	struct irq_desc *desc = irq_data_to_desc(data);
+
+	desc->handle_irq = handler;
+}
+
+/**
+ * irq_set_chip_handler_name_locked - Set chip, handler and name from a locked region
+ * @data:	Pointer to the irq_data structure for which the chip is set
+ * @chip:	Pointer to the new irq chip
+ * @handler:	Flow control handler function for this interrupt
+ * @name:	Name of the interrupt
+ *
+ * Replace the irq chip at the proper hierarchy level in @data and
+ * sets the handler and name in the associated irq descriptor.
+ *
+ * Must be called with irq_desc locked and valid parameters.
+ */
+static inline void
+irq_set_chip_handler_name_locked(struct irq_data *data, struct irq_chip *chip,
+				 irq_flow_handler_t handler, const char *name)
+{
+	struct irq_desc *desc = irq_data_to_desc(data);
+
+	desc->handle_irq = handler;
+	desc->name = name;
+	data->chip = chip;
+}
+
 static inline int irq_balancing_disabled(unsigned int irq)
 {
 	struct irq_desc *desc;
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index fdd5cc1..9669bf9 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -23,12 +23,6 @@ unsigned int irq_get_next_irq(unsigned int offset);
 			;						\
 		else
 
-#ifdef CONFIG_SMP
-#define irq_node(irq)	(irq_get_irq_data(irq)->node)
-#else
-#define irq_node(irq)	0
-#endif
-
 # define for_each_active_irq(irq)			\
 	for (irq = irq_get_next_irq(0); irq < nr_irqs;	\
 	     irq = irq_get_next_irq(irq + 1))