Linus,

please pull the latest irq/core branch from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq-core-2026-08-17

up to:  1ad6d4a722f5: MAINTAINERS: Add Radu Rendec as reviewer for the interrupt subsystem

Generic interrupt subsystem updates:

 - Remove pointless NULL checks of the kstats_irqs field. That's a
   historical left over and not longer required.

 - Add Radu Rendec as reviewer. Radu thankfully stepped up to help
   reviewing the interrupt core and the related drivers code.

 - The usual small improvements and fixes

Thanks,

	tglx

------------------>
Kemeng Shi (3):
      irqdomain: Plug leak in irq_domain_alloc_irqs_locked() error path
      genirq/manage: Use irqd_get_parent_data() helper in __irq_get_irqchip_state()
      irqdomain: Remove unnedded NULL check in __irq_domain_[de]activate_irq()

Li RongQing (1):
      genirq/msi: Move misplaced EXPORT_SYMBOL_GPL for msi_domain_free_irqs_all()

Radu Rendec (2):
      genirq: Remove unnecessary NULL check of the kstat_irqs field
      parisc: Remove unnecessary NULL check of the kstat_irqs field

Thomas Gleixner (1):
      MAINTAINERS: Add Radu Rendec as reviewer for the interrupt subsystem


 MAINTAINERS              |  3 +++
 arch/parisc/kernel/smp.c |  2 +-
 include/linux/irqdesc.h  |  2 +-
 kernel/irq/irqdesc.c     | 11 ++++-------
 kernel/irq/irqdomain.c   |  8 +++++---
 kernel/irq/manage.c      |  6 +-----
 kernel/irq/msi.c         |  2 +-
 7 files changed, 16 insertions(+), 18 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 15011f5752a9..ebf9d388e939 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13712,6 +13712,7 @@ F:	sound/soc/codecs/sma*
 
 IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
 M:	Thomas Gleixner <tglx@kernel.org>
+R:	Radu Rendec <radu@rendec.net>
 S:	Maintained
 P:	Documentation/process/maintainer-tip.rst
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
@@ -13723,6 +13724,7 @@ F:	kernel/irq/msi.c
 
 IRQ SUBSYSTEM
 M:	Thomas Gleixner <tglx@kernel.org>
+R:	Radu Rendec <radu@rendec.net>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 P:	Documentation/process/maintainer-tip.rst
@@ -13737,6 +13739,7 @@ F:	lib/group_cpus.c
 
 IRQCHIP DRIVERS
 M:	Thomas Gleixner <tglx@kernel.org>
+R:	Radu Rendec <radu@rendec.net>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 P:	Documentation/process/maintainer-tip.rst
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index b2d12ab728b1..36be17e32948 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -343,7 +343,7 @@ static int smp_boot_one_cpu(int cpuid, struct task_struct *idle)
 	for (i = 0; i < NR_IRQS; i++) {
 		struct irq_desc *desc = irq_to_desc(i);
 
-		if (desc && desc->kstat_irqs)
+		if (desc)
 			*per_cpu_ptr(desc->kstat_irqs, cpuid) = (struct irqstat) { };
 	}
 #endif
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 8080db17c1b1..779d6023c5c2 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -146,7 +146,7 @@ extern struct irq_desc irq_desc[NR_IRQS];
 static inline unsigned int irq_desc_kstat_cpu(struct irq_desc *desc,
 					      unsigned int cpu)
 {
-	return desc->kstat_irqs ? per_cpu(desc->kstat_irqs->cnt, cpu) : 0;
+	return per_cpu(desc->kstat_irqs->cnt, cpu);
 }
 
 static inline struct irq_desc *irq_data_to_desc(struct irq_data *data)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 80ef4e27dcf4..3a818f07a101 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -1004,7 +1004,7 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	return desc && desc->kstat_irqs ? per_cpu(desc->kstat_irqs->cnt, cpu) : 0;
+	return desc ? irq_desc_kstat_cpu(desc, cpu) : 0;
 }
 
 static unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask)
@@ -1026,7 +1026,7 @@ static unsigned int kstat_irqs(unsigned int irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	if (!desc || !desc->kstat_irqs)
+	if (!desc)
 		return 0;
 	return kstat_irqs_desc(desc, cpu_possible_mask);
 }
@@ -1038,18 +1038,15 @@ void kstat_snapshot_irqs(void)
 	struct irq_desc *desc;
 	unsigned int irq;
 
-	for_each_irq_desc(irq, desc) {
-		if (!desc->kstat_irqs)
-			continue;
+	for_each_irq_desc(irq, desc)
 		this_cpu_write(desc->kstat_irqs->ref, this_cpu_read(desc->kstat_irqs->cnt));
-	}
 }
 
 unsigned int kstat_get_irq_since_snapshot(unsigned int irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	if (!desc || !desc->kstat_irqs)
+	if (!desc)
 		return 0;
 	return this_cpu_read(desc->kstat_irqs->cnt) - this_cpu_read(desc->kstat_irqs->ref);
 }
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index f15c9f1223bb..57c819da30c2 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -1658,7 +1658,7 @@ static int irq_domain_alloc_irqs_locked(struct irq_domain *domain, int irq_base,
 	for (i = 0; i < nr_irqs; i++) {
 		ret = irq_domain_trim_hierarchy(virq + i);
 		if (ret)
-			goto out_free_irq_data;
+			goto out_free_irqs;
 	}
 
 	for (i = 0; i < nr_irqs; i++)
@@ -1666,6 +1666,8 @@ static int irq_domain_alloc_irqs_locked(struct irq_domain *domain, int irq_base,
 
 	return virq;
 
+out_free_irqs:
+	irq_domain_free_irqs_hierarchy(domain, virq, nr_irqs);
 out_free_irq_data:
 	irq_domain_free_irq_data(virq, nr_irqs);
 out_free_desc:
@@ -1963,7 +1965,7 @@ EXPORT_SYMBOL_GPL(irq_domain_free_irqs_parent);
 
 static void __irq_domain_deactivate_irq(struct irq_data *irq_data)
 {
-	if (irq_data && irq_data->domain) {
+	if (irq_data->domain) {
 		struct irq_domain *domain = irq_data->domain;
 
 		if (domain->ops->deactivate)
@@ -1977,7 +1979,7 @@ static int __irq_domain_activate_irq(struct irq_data *irqd, bool reserve)
 {
 	int ret = 0;
 
-	if (irqd && irqd->domain) {
+	if (irqd->domain) {
 		struct irq_domain *domain = irqd->domain;
 
 		if (irqd->parent_data)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 7eb07e3bdb4c..4fa569db8ec7 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -2703,11 +2703,7 @@ static int __irq_get_irqchip_state(struct irq_data *data, enum irqchip_irq_state
 			return -ENODEV;
 		if (chip->irq_get_irqchip_state)
 			break;
-#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
-		data = data->parent_data;
-#else
-		data = NULL;
-#endif
+		data = irqd_get_parent_data(data);
 	} while (data);
 
 	if (data)
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 903be7289c53..fb5f372215bf 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -1683,7 +1683,6 @@ void msi_domain_free_irqs_range(struct device *dev, unsigned int domid,
 	guard(msi_descs_lock)(dev);
 	msi_domain_free_irqs_range_locked(dev, domid, first, last);
 }
-EXPORT_SYMBOL_GPL(msi_domain_free_irqs_all);
 
 /**
  * msi_domain_free_irqs_all_locked - Free all interrupts from a MSI interrupt domain
@@ -1714,6 +1713,7 @@ void msi_domain_free_irqs_all(struct device *dev, unsigned int domid)
 	guard(msi_descs_lock)(dev);
 	msi_domain_free_irqs_all_locked(dev, domid);
 }
+EXPORT_SYMBOL_GPL(msi_domain_free_irqs_all);
 
 /**
  * msi_device_domain_free_wired - Free a wired interrupt in @domain

The pull request you sent on Mon, 17 Aug 2026 13:23:31 +0200:

> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq-core-2026-08-17

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/762fffa407d8d24288513538cf5d17c2c5425258

Thank you!

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