Merge tag 'irq_urgent_for_v6.16_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Borislav Petkov:

 - Fix missing prototypes warnings

 - Properly initialize work context when allocating it

 - Remove a method tracking when managed interrupts are suspended during
   hotplug, in favor of the code using a IRQ disable depth tracking now,
   and have interrupts get properly enabled again on restore

 - Make sure multiple CPUs getting hotplugged don't cause wrong tracking
   of the managed IRQ disable depth

* tag 'irq_urgent_for_v6.16_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/ath79-misc: Fix missing prototypes warnings
  genirq/irq_sim: Initialize work context pointers properly
  genirq/cpuhotplug: Restore affinity even for suspended IRQ
  genirq/cpuhotplug: Rebalance managed interrupts across multi-CPU hotplug

Author: torvalds

drivers/irqchip/irq-ath79-misc.c

@@ -15,6 +15,8 @@
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 
+#include <asm/time.h>
+
 #define AR71XX_RESET_REG_MISC_INT_STATUS	0
 #define AR71XX_RESET_REG_MISC_INT_ENABLE	4
 
@@ -177,21 +179,3 @@ static int __init ar7240_misc_intc_of_init(
 
 IRQCHIP_DECLARE(ar7240_misc_intc, "qca,ar7240-misc-intc",
 		ar7240_misc_intc_of_init);
-
-void __init ath79_misc_irq_init(void __iomem *regs, int irq,
-				int irq_base, bool is_ar71xx)
-{
-	struct irq_domain *domain;
-
-	if (is_ar71xx)
-		ath79_misc_irq_chip.irq_mask_ack = ar71xx_misc_irq_mask;
-	else
-		ath79_misc_irq_chip.irq_ack = ar724x_misc_irq_ack;
-
-	domain = irq_domain_create_legacy(NULL, ATH79_MISC_IRQ_COUNT,
-			irq_base, 0, &misc_irq_domain_ops, regs);
-	if (!domain)
-		panic("Failed to create MISC irqdomain");
-
-	ath79_misc_intc_domain_init(domain, irq);
-}

kernel/irq/chip.c

@@ -205,6 +205,14 @@ __irq_startup_managed(struct irq_desc *desc, const struct cpumask *aff,
 
 void irq_startup_managed(struct irq_desc *desc)
 {
+	struct irq_data *d = irq_desc_get_irq_data(desc);
+
+	/*
+	 * Clear managed-shutdown flag, so we don't repeat managed-startup for
+	 * multiple hotplugs, and cause imbalanced disable depth.
+	 */
+	irqd_clr_managed_shutdown(d);
+
 	/*
 	 * Only start it up when the disable depth is 1, so that a disable,
 	 * hotunplug, hotplug sequence does not end up enabling it during

kernel/irq/cpuhotplug.c

@@ -210,13 +210,6 @@ static void irq_restore_affinity_of_irq(struct irq_desc *desc, unsigned int cpu)
 	    !irq_data_get_irq_chip(data) || !cpumask_test_cpu(cpu, affinity))
 		return;
 
-	/*
-	 * Don't restore suspended interrupts here when a system comes back
-	 * from S3. They are reenabled via resume_device_irqs().
-	 */
-	if (desc->istate & IRQS_SUSPENDED)
-		return;
-
 	if (irqd_is_managed_and_shutdown(data))
 		irq_startup_managed(desc);
 

kernel/irq/irq_sim.c

@@ -202,7 +202,7 @@ struct irq_domain *irq_domain_create_sim_full(struct fwnode_handle *fwnode,
 					      void *data)
 {
 	struct irq_sim_work_ctx *work_ctx __free(kfree) =
-				kmalloc(sizeof(*work_ctx), GFP_KERNEL);
+				kzalloc(sizeof(*work_ctx), GFP_KERNEL);
 
 	if (!work_ctx)
 		return ERR_PTR(-ENOMEM);