Merge tag 'irq-core-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "Updates for the interrupt subsystem:

  Core changes:

   - Cleanup and simplification of common code to invoke the low level
     interrupt flow handlers when this invocation requires irqdomain
     resolution. Add the necessary core infrastructure.

   - Provide a proper interface for modular PMU drivers to set the
     interrupt affinity.

   - Add a request flag which allows to exclude interrupts from spurious
     interrupt detection. Useful especially for IPI handlers which
     always return IRQ_HANDLED which turns the spurious interrupt
     detection into a pointless waste of CPU cycles.

  Driver changes:

   - Bulk convert interrupt chip drivers to the new irqdomain low level
     flow handler invocation mechanism.

   - Add device tree bindings for the Renesas R-Car M3-W+ SoC

   - Enable modular build of the Qualcomm PDC driver

   - The usual small fixes and improvements"

* tag 'irq-core-2021-06-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
  dt-bindings: interrupt-controller: arm,gic-v3: Describe GICv3 optional properties
  irqchip: gic-pm: Remove redundant error log of clock bulk
  irqchip/sun4i: Remove unnecessary oom message
  irqchip/irq-imx-gpcv2: Remove unnecessary oom message
  irqchip/imgpdc: Remove unnecessary oom message
  irqchip/gic-v3-its: Remove unnecessary oom message
  irqchip/gic-v2m: Remove unnecessary oom message
  irqchip/exynos-combiner: Remove unnecessary oom message
  irqchip: Bulk conversion to generic_handle_domain_irq()
  genirq: Move non-irqdomain handle_domain_irq() handling into ARM's handle_IRQ()
  genirq: Add generic_handle_domain_irq() helper
  irqchip/nvic: Convert from handle_IRQ() to handle_domain_irq()
  irqdesc: Fix __handle_domain_irq() comment
  genirq: Use irq_resolve_mapping() to implement __handle_domain_irq() and co
  irqdomain: Introduce irq_resolve_mapping()
  irqdomain: Protect the linear revmap with RCU
  irqdomain: Cache irq_data instead of a virq number in the revmap
  irqdomain: Use struct_size() helper when allocating irqdomain
  irqdomain: Make normal and nomap irqdomains exclusive
  powerpc: Move the use of irq_domain_add_nomap() behind a config option
  ...

106 files changed, 408 insertions, 354 deletions

diff --git a/Documentation/core-api/irq/irq-domain.rst b/Documentation/core-api/irq/irq-domain.rst
index 8214e215a8bf..53283b3729a1 100644
--- a/Documentation/core-api/irq/irq-domain.rst
+++ b/Documentation/core-api/irq/irq-domain.rst
@@ -146,7 +146,6 @@ Legacy
 
 	irq_domain_add_simple()
 	irq_domain_add_legacy()
-	irq_domain_add_legacy_isa()
 	irq_domain_create_simple()
 	irq_domain_create_legacy()
 
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
index 1ecd1831cf02..c84f9fe7f254 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
@@ -145,6 +145,19 @@ properties:
         required:
           - affinity
 
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: aclk
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
 dependencies:
   mbi-ranges: [ msi-controller ]
   msi-controller: [ mbi-ranges ]
diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml
index b67b8cbd33fc..abb22db3bb28 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.yaml
@@ -29,6 +29,7 @@ properties:
           - renesas,intc-ex-r8a774c0    # RZ/G2E
           - renesas,intc-ex-r8a7795     # R-Car H3
           - renesas,intc-ex-r8a7796     # R-Car M3-W
+          - renesas,intc-ex-r8a77961    # R-Car M3-W+
           - renesas,intc-ex-r8a77965    # R-Car M3-N
           - renesas,intc-ex-r8a77970    # R-Car V3M
           - renesas,intc-ex-r8a77980    # R-Car V3H
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 698b6f636156..20ab1e607522 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -63,7 +63,27 @@ int arch_show_interrupts(struct seq_file *p, int prec)
  */
 void handle_IRQ(unsigned int irq, struct pt_regs *regs)
 {
-	__handle_domain_irq(NULL, irq, false, regs);
+	struct pt_regs *old_regs = set_irq_regs(regs);
+	struct irq_desc *desc;
+
+	irq_enter();
+
+	/*
+	 * Some hardware gives randomly wrong interrupts.  Rather
+	 * than crashing, do something sensible.
+	 */
+	if (unlikely(!irq || irq >= nr_irqs))
+		desc = NULL;
+	else
+		desc = irq_to_desc(irq);
+
+	if (likely(desc))
+		handle_irq_desc(desc);
+	else
+		ack_bad_irq(irq);
+
+	irq_exit();
+	set_irq_regs(old_regs);
 }
 
 /*
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index f021de661c3a..d1477ecb1af9 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -11,7 +11,6 @@
 
 #include <linux/linkage.h>
 #include <linux/smp.h>
-#include <linux/irqdomain.h>
 
 #include <asm/mipsmtregs.h>
 
diff --git a/arch/mips/lantiq/xway/dma.c b/arch/mips/lantiq/xway/dma.c
index aeb1b989cd4e..63dccb2ed08b 100644
--- a/arch/mips/lantiq/xway/dma.c
+++ b/arch/mips/lantiq/xway/dma.c
@@ -12,6 +12,7 @@
 #include <linux/spinlock.h>
 #include <linux/clk.h>
 #include <linux/err.h>
+#include <linux/of.h>
 
 #include <lantiq_soc.h>
 #include <xway_dma.h>
diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c
index aebd4964ea34..c48e23cf5b5e 100644
--- a/arch/mips/pci/pci-rt3883.c
+++ b/arch/mips/pci/pci-rt3883.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
+#include <linux/irqdomain.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
 #include <linux/of_pci.h>
diff --git a/arch/mips/pci/pci-xtalk-bridge.c b/arch/mips/pci/pci-xtalk-bridge.c
index d2216942af18..ab9bedb82b28 100644
--- a/arch/mips/pci/pci-xtalk-bridge.c
+++ b/arch/mips/pci/pci-xtalk-bridge.c
@@ -13,6 +13,7 @@
 #include <linux/platform_data/xtalk-bridge.h>
 #include <linux/nvmem-consumer.h>
 #include <linux/crc16.h>
+#include <linux/irqdomain.h>
 
 #include <asm/pci/bridge.h>
 #include <asm/paccess.h>
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 42df9fafa943..95c1bff1ab9f 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -9,6 +9,7 @@
 
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqdomain.h>
 #include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/bitops.h>
diff --git a/arch/mips/sgi-ip30/ip30-irq.c b/arch/mips/sgi-ip30/ip30-irq.c
index e8374e4c705b..ba87704073c8 100644
--- a/arch/mips/sgi-ip30/ip30-irq.c
+++ b/arch/mips/sgi-ip30/ip30-irq.c
@@ -6,6 +6,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqdomain.h>
 #include <linux/percpu.h>
 #include <linux/spinlock.h>
 #include <linux/tick.h>
diff --git a/arch/nios2/include/asm/irq.h b/arch/nios2/include/asm/irq.h
index 13ce37272279..c52c94884e93 100644
--- a/arch/nios2/include/asm/irq.h
+++ b/arch/nios2/include/asm/irq.h<