Merge tag 'irq-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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

  Treewide:

    - Cleanup of setup_irq() which is not longer required because the
      memory allocator is available early.

      Most cleanup changes come through the various maintainer trees, so
      the final removal of setup_irq() is postponed towards the end of
      the merge window.

  Core:

    - Protection against unsafe invocation of interrupt handlers and
      unsafe interrupt injection including a fixup of the offending
      PCI/AER error injection mechanism.

      Invoking interrupt handlers from arbitrary contexts, i.e. outside
      of an actual interrupt, can cause inconsistent state on the
      fragile x86 interrupt affinity changing hardware trainwreck.

  Drivers:

    - Second wave of support for the new ARM GICv4.1

    - Multi-instance support for Xilinx and PLIC interrupt controllers

    - CPU-Hotplug support for PLIC

    - The obligatory new driver for X1000 TCU

    - Enhancements, cleanups and fixes all over the place"

* tag 'irq-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits)
  unicore32: Replace setup_irq() by request_irq()
  sh: Replace setup_irq() by request_irq()
  hexagon: Replace setup_irq() by request_irq()
  c6x: Replace setup_irq() by request_irq()
  alpha: Replace setup_irq() by request_irq()
  irqchip/gic-v4.1: Eagerly vmap vPEs
  irqchip/gic-v4.1: Add VSGI property setup
  irqchip/gic-v4.1: Add VSGI allocation/teardown
  irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer
  irqchip/gic-v4.1: Plumb set_vcpu_affinity SGI callbacks
  irqchip/gic-v4.1: Plumb get/set_irqchip_state SGI callbacks
  irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks
  irqchip/gic-v4.1: Add initial SGI configuration
  irqchip/gic-v4.1: Plumb skeletal VSGI irqchip
  irqchip/stm32: Retrigger both in eoi and unmask callbacks
  irqchip/gic-v3: Move irq_domain_update_bus_token to after checking for NULL domain
  irqchip/xilinx: Do not call irq_set_default_host()
  irqchip/xilinx: Enable generic irq multi handler
  irqchip/xilinx: Fill error code when irq domain registration fails
  irqchip/xilinx: Add support for multiple instances
  ...

2 files changed, 9 insertions, 18 deletions

diff --git a/arch/sh/boards/mach-cayman/irq.c b/arch/sh/boards/mach-cayman/irq.c
index 3b6ea2d99013..0305d0b51730 100644
--- a/arch/sh/boards/mach-cayman/irq.c
+++ b/arch/sh/boards/mach-cayman/irq.c
@@ -40,16 +40,6 @@ static irqreturn_t cayman_interrupt_pci2(int irq, void *dev_id)
 	return IRQ_NONE;
 }
 
-static struct irqaction cayman_action_smsc = {
-	.name		= "Cayman SMSC Mux",
-	.handler	= cayman_interrupt_smsc,
-};
-
-static struct irqaction cayman_action_pci2 = {
-	.name		= "Cayman PCI2 Mux",
-	.handler	= cayman_interrupt_pci2,
-};
-
 static void enable_cayman_irq(struct irq_data *data)
 {
 	unsigned int irq = data->irq;
@@ -149,6 +139,10 @@ void init_cayman_irq(void)
 	}
 
 	/* Setup the SMSC interrupt */
-	setup_irq(SMSC_IRQ, &cayman_action_smsc);
-	setup_irq(PCI2_IRQ, &cayman_action_pci2);
+	if (request_irq(SMSC_IRQ, cayman_interrupt_smsc, 0, "Cayman SMSC Mux",
+			NULL))
+		pr_err("Failed to register Cayman SMSC Mux interrupt\n");
+	if (request_irq(PCI2_IRQ, cayman_interrupt_pci2, 0, "Cayman PCI2 Mux",
+			NULL))
+		pr_err("Failed to register Cayman PCI2 Mux interrupt\n");
 }
diff --git a/arch/sh/drivers/dma/dma-pvr2.c b/arch/sh/drivers/dma/dma-pvr2.c
index b5dbd1f75768..21c347543e19 100644
--- a/arch/sh/drivers/dma/dma-pvr2.c
+++ b/arch/sh/drivers/dma/dma-pvr2.c
@@ -64,11 +64,6 @@ static int pvr2_xfer_dma(struct dma_channel *chan)
 	return 0;
 }
 
-static struct irqaction pvr2_dma_irq = {
-	.name		= "pvr2 DMA handler",
-	.handler	= pvr2_dma_interrupt,
-};
-
 static struct dma_ops pvr2_dma_ops = {
 	.request	= pvr2_request_dma,
 	.get_residue	= pvr2_get_dma_residue,
@@ -84,7 +79,9 @@ static struct dma_info pvr2_dma_info = {
 
 static int __init pvr2_dma_init(void)
 {
-	setup_irq(HW_EVENT_PVR2_DMA, &pvr2_dma_irq);
+	if (request_irq(HW_EVENT_PVR2_DMA, pvr2_dma_interrupt, 0,
+			"pvr2 DMA handler", NULL))
+		pr_err("Failed to register pvr2 DMA handler interrupt\n");
 	request_dma(PVR2_CASCADE_CHAN, "pvr2 cascade");
 
 	return register_dmac(&pvr2_dma_info);