Merge tag 'irq-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "Core:

   - Make affinity changes take effect immediately for interrupt
     threads. This reduces the impact on isolated CPUs as it pulls over
     the thread right away instead of doing it after the next hardware
     interrupt arrived.

   - Cleanup and improvements for the interrupt chip simulator

   - Deduplication of the interrupt descriptor initialization code so
     the sparse and non-sparse mode share more code.

  Drivers:

   - A set of conversions to platform_drivers::remove_new() which gets
     rid of the pointless return value.

   - A new driver for the Starfive JH8100 SoC

   - Support for Amlogic-T7 SoCs

   - Improvement for the interrupt handling and EOI management for the
     loongson interrupt controller.

   - The usual fixes and improvements all over the place"

* tag 'irq-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  irqchip/ts4800: Convert to platform_driver::remove_new() callback
  irqchip/stm32-exti: Convert to platform_driver::remove_new() callback
  irqchip/renesas-rza1: Convert to platform_driver::remove_new() callback
  irqchip/renesas-irqc: Convert to platform_driver::remove_new() callback
  irqchip/renesas-intc-irqpin: Convert to platform_driver::remove_new() callback
  irqchip/pruss-intc: Convert to platform_driver::remove_new() callback
  irqchip/mvebu-pic: Convert to platform_driver::remove_new() callback
  irqchip/madera: Convert to platform_driver::remove_new() callback
  irqchip/ls-scfg-msi: Convert to platform_driver::remove_new() callback
  irqchip/keystone: Convert to platform_driver::remove_new() callback
  irqchip/imx-irqsteer: Convert to platform_driver::remove_new() callback
  irqchip/imx-intmux: Convert to platform_driver::remove_new() callback
  irqchip/imgpdc: Convert to platform_driver::remove_new() callback
  irqchip: Add StarFive external interrupt controller
  dt-bindings: interrupt-controller: Add starfive,jh8100-intc
  arm64: dts: Add gpio_intc node for Amlogic-T7 SoCs
  irqchip/meson-gpio: Add support for Amlogic-T7 SoCs
  dt-bindings: interrupt-controller: Add support for Amlogic-T7 SoCs
  irqchip/vic: Fix a kernel-doc warning
  genirq: Wake interrupt threads immediately when changing affinity
  ...

1 files changed, 11 insertions, 17 deletions

diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index dd76323ea3fd..38d6ae651ac7 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -4,10 +4,11 @@
  * Copyright (C) 2020 Bartosz Golaszewski <bgolaszewski@baylibre.com>
  */
 
+#include <linux/cleanup.h>
+#include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/irq_sim.h>
 #include <linux/irq_work.h>
-#include <linux/interrupt.h>
 #include <linux/slab.h>
 
 struct irq_sim_work_ctx {
@@ -19,7 +20,6 @@ struct irq_sim_work_ctx {
 };
 
 struct irq_sim_irq_ctx {
-	int			irqnum;
 	bool			enabled;
 	struct irq_sim_work_ctx	*work_ctx;
 };
@@ -164,33 +164,27 @@ static const struct irq_domain_ops irq_sim_domain_ops = {
 struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
 					 unsigned int num_irqs)
 {
-	struct irq_sim_work_ctx *work_ctx;
+	struct irq_sim_work_ctx *work_ctx __free(kfree) =
+				kmalloc(sizeof(*work_ctx), GFP_KERNEL);
 
-	work_ctx = kmalloc(sizeof(*work_ctx), GFP_KERNEL);
 	if (!work_ctx)
-		goto err_out;
+		return ERR_PTR(-ENOMEM);
 
-	work_ctx->pending = bitmap_zalloc(num_irqs, GFP_KERNEL);
-	if (!work_ctx->pending)
-		goto err_free_work_ctx;
+	unsigned long *pending __free(bitmap) = bitmap_zalloc(num_irqs, GFP_KERNEL);
+	if (!pending)
+		return ERR_PTR(-ENOMEM);
 
 	work_ctx->domain = irq_domain_create_linear(fwnode, num_irqs,
 						    &irq_sim_domain_ops,
 						    work_ctx);
 	if (!work_ctx->domain)
-		goto err_free_bitmap;
+		return ERR_PTR(-ENOMEM);
 
 	work_ctx->irq_count = num_irqs;
 	work_ctx->work = IRQ_WORK_INIT_HARD(irq_sim_handle_irq);
+	work_ctx->pending = no_free_ptr(pending);
 
-	return work_ctx->domain;
-
-err_free_bitmap:
-	bitmap_free(work_ctx->pending);
-err_free_work_ctx:
-	kfree(work_ctx);
-err_out:
-	return ERR_PTR(-ENOMEM);
+	return no_free_ptr(work_ctx)->domain;
 }
 EXPORT_SYMBOL_GPL(irq_domain_create_sim);