From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001
From: Breno Leitao <leitao@debian.org>
Date: Wed, 5 Aug 2026 07:52:36 -0700
Subject: workqueue: skip the node_nr_active update for non-unbound workqueues

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
 drivers/pci/controller/pci-host-common.c | 110 +++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 drivers/pci/controller/pci-host-common.c

(limited to 'drivers/pci/controller/pci-host-common.c')

diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
new file mode 100644
index 000000000..d6258c1cf
--- /dev/null
+++ b/drivers/pci/controller/pci-host-common.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common library for PCI host controller drivers
+ *
+ * Copyright (C) 2014 ARM Limited
+ *
+ * Author: Will Deacon <will.deacon@arm.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_pci.h>
+#include <linux/pci-ecam.h>
+#include <linux/platform_device.h>
+
+#include "pci-host-common.h"
+
+static void gen_pci_unmap_cfg(void *ptr)
+{
+	pci_ecam_free((struct pci_config_window *)ptr);
+}
+
+struct pci_config_window *pci_host_common_ecam_create(struct device *dev,
+		struct pci_host_bridge *bridge, const struct pci_ecam_ops *ops)
+{
+	int err;
+	struct resource cfgres;
+	struct resource_entry *bus;
+	struct pci_config_window *cfg;
+
+	err = of_address_to_resource(dev->of_node, 0, &cfgres);
+	if (err) {
+		dev_err(dev, "missing or malformed \"reg\" property\n");
+		return ERR_PTR(err);
+	}
+
+	bus = resource_list_first_type(&bridge->windows, IORESOURCE_BUS);
+	if (!bus)
+		return ERR_PTR(-ENODEV);
+
+	cfg = pci_ecam_create(dev, &cfgres, bus->res, ops);
+	if (IS_ERR(cfg))
+		return cfg;
+
+	err = devm_add_action_or_reset(dev, gen_pci_unmap_cfg, cfg);
+	if (err)
+		return ERR_PTR(err);
+
+	return cfg;
+}
+EXPORT_SYMBOL_GPL(pci_host_common_ecam_create);
+
+int pci_host_common_init(struct platform_device *pdev,
+			 struct pci_host_bridge *bridge,
+			 const struct pci_ecam_ops *ops)
+{
+	struct device *dev = &pdev->dev;
+	struct pci_config_window *cfg;
+
+	of_pci_check_probe_only();
+
+	platform_set_drvdata(pdev, bridge);
+
+	/* Parse and map our Configuration Space windows */
+	cfg = pci_host_common_ecam_create(dev, bridge, ops);
+	if (IS_ERR(cfg))
+		return PTR_ERR(cfg);
+
+	bridge->sysdata = cfg;
+	bridge->ops = (struct pci_ops *)&ops->pci_ops;
+	bridge->enable_device = ops->enable_device;
+	bridge->disable_device = ops->disable_device;
+	bridge->msi_domain = true;
+
+	return pci_host_probe(bridge);
+}
+EXPORT_SYMBOL_GPL(pci_host_common_init);
+
+int pci_host_common_probe(struct platform_device *pdev)
+{
+	const struct pci_ecam_ops *ops;
+	struct pci_host_bridge *bridge;
+
+	ops = of_device_get_match_data(&pdev->dev);
+	if (!ops)
+		return -ENODEV;
+
+	bridge = devm_pci_alloc_host_bridge(&pdev->dev, 0);
+	if (!bridge)
+		return -ENOMEM;
+
+	return pci_host_common_init(pdev, bridge, ops);
+}
+EXPORT_SYMBOL_GPL(pci_host_common_probe);
+
+void pci_host_common_remove(struct platform_device *pdev)
+{
+	struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
+
+	pci_lock_rescan_remove();
+	pci_stop_root_bus(bridge->bus);
+	pci_remove_root_bus(bridge->bus);
+	pci_unlock_rescan_remove();
+}
+EXPORT_SYMBOL_GPL(pci_host_common_remove);
+
+MODULE_DESCRIPTION("Common library for PCI host controller drivers");
+MODULE_LICENSE("GPL v2");
-- 
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