Merge tag 'irq-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of updates for the interrupt subsystem:

   - Make multiqueue devices which use the managed interrupt affinity
     infrastructure work on PowerPC/Pseries. PowerPC does not use the
     generic infrastructure for setting up PCI/MSI interrupts and the
     multiqueue changes failed to update the legacy PCI/MSI
     infrastructure. Make this work by passing the affinity setup
     information down to the mapping and allocation functions.

   - Move Jason Cooper from MAINTAINERS to CREDITS as his mail is
     bouncing and he's not reachable. We hope all is well with him and
     say thanks for his work over the years"

* tag 'irq-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  powerpc/pseries: Pass MSI affinity to irq_create_mapping()
  genirq/irqdomain: Add an irq_create_mapping_affinity() function
  MAINTAINERS: Move Jason Cooper to CREDITS

Author: torvalds

CREDITS

@@ -740,6 +740,11 @@ S: (ask for current address)
 S: Portland, Oregon
 S: USA
 
+N: Jason Cooper
+D: ARM/Marvell SOC co-maintainer
+D: irqchip co-maintainer
+D: MVEBU PCI DRIVER co-maintainer
+
 N: Robin Cornelius
 E: [email protected]
 D: Ralink rt2x00 WLAN driver

MAINTAINERS

@@ -2014,7 +2014,6 @@ M:	Philipp Zabel <[email protected]>
 S:	Maintained
 
 ARM/Marvell Dove/MV78xx0/Orion SOC support
-M:	Jason Cooper <[email protected]>
 M:	Andrew Lunn <[email protected]>
 M:	Sebastian Hesselbarth <[email protected]>
 M:	Gregory Clement <[email protected]>
@@ -2031,7 +2030,6 @@ F:	arch/arm/plat-orion/
 F:	drivers/soc/dove/
 
 ARM/Marvell Kirkwood and Armada 370, 375, 38x, 39x, XP, 3700, 7K/8K, CN9130 SOC support
-M:	Jason Cooper <[email protected]>
 M:	Andrew Lunn <[email protected]>
 M:	Gregory Clement <[email protected]>
 M:	Sebastian Hesselbarth <[email protected]>
@@ -9257,7 +9255,6 @@ F:	kernel/irq/
 
 IRQCHIP DRIVERS
 M:	Thomas Gleixner <[email protected]>
-M:	Jason Cooper <[email protected]>
 M:	Marc Zyngier <[email protected]>
 L:	[email protected]
 S:	Maintained
@@ -13403,7 +13400,6 @@ F:	drivers/pci/controller/mobiveil/pcie-mobiveil*
 
 PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
 M:	Thomas Petazzoni <[email protected]>
-M:	Jason Cooper <[email protected]>
 L:	[email protected]
 L:	[email protected] (moderated for non-subscribers)
 S:	Maintained

arch/powerpc/platforms/pseries/msi.c

@@ -458,7 +458,8 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type)
 			return hwirq;
 		}
 
-		virq = irq_create_mapping(NULL, hwirq);
+		virq = irq_create_mapping_affinity(NULL, hwirq,
+						   entry->affinity);
 
 		if (!virq) {
 			pr_debug("rtas_msi: Failed mapping hwirq %d\n", hwirq);

include/linux/irqdomain.h

@@ -384,11 +384,19 @@ extern void irq_domain_associate_many(struct irq_domain *domain,
 extern void irq_domain_disassociate(struct irq_domain *domain,
 				    unsigned int irq);
 
-extern unsigned int irq_create_mapping(struct irq_domain *host,
-				       irq_hw_number_t hwirq);
+extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
+				      irq_hw_number_t hwirq,
+				      const struct irq_affinity_desc *affinity);
 extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
 extern void irq_dispose_mapping(unsigned int virq);
 
+static inline unsigned int irq_create_mapping(struct irq_domain *host,
+					      irq_hw_number_t hwirq)
+{
+	return irq_create_mapping_affinity(host, hwirq, NULL);
+}
+
+
 /**
  * irq_linear_revmap() - Find a linux irq from a hw irq number.
  * @domain: domain owning this hardware interrupt

kernel/irq/irqdomain.c

@@ -624,17 +624,19 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain)
 EXPORT_SYMBOL_GPL(irq_create_direct_mapping);
 
 /**
- * irq_create_mapping() - Map a hardware interrupt into linux irq space
+ * irq_create_mapping_affinity() - Map a hardware interrupt into linux irq space
  * @domain: domain owning this hardware interrupt or NULL for default domain
  * @hwirq: hardware irq number in that domain space
+ * @affinity: irq affinity
  *
  * Only one mapping per hardware interrupt is permitted. Returns a linux
  * irq number.
  * If the sense/trigger is to be specified, set_irq_type() should be called
  * on the number returned from that call.
  */
-unsigned int irq_create_mapping(struct irq_domain *domain,
-				irq_hw_number_t hwirq)
+unsigned int irq_create_mapping_affinity(struct irq_domain *domain,
+				       irq_hw_number_t hwirq,
+				       const struct irq_affinity_desc *affinity)
 {
 	struct device_node *of_node;
 	int virq;
@@ -660,7 +662,8 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
 	}
 
 	/* Allocate a virtual interrupt number */
-	virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node), NULL);
+	virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node),
+				      affinity);
 	if (virq <= 0) {
 		pr_debug("-> virq allocation failed\n");
 		return 0;
@@ -676,7 +679,7 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
 
 	return virq;
 }
-EXPORT_SYMBOL_GPL(irq_create_mapping);
+EXPORT_SYMBOL_GPL(irq_create_mapping_affinity);
 
 /**
  * irq_create_strict_mappings() - Map a range of hw irqs to fixed linux irqs