linux-kernel - [PATCH 01/12] irqdomain: Add device pointer to irq_domain_info and msi_domain

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <943e52403b20cf13c320d55bd4446b4562466aab.1750860131.git.namcao@linutronix.de>
Date: Thu, 26 Jun 2025 16:48:58 +0200
From: Nam Cao <namcao@...utronix.de>
To: Marc Zyngier <maz@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Antoine Tenart <atenart@...nel.org>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...tlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Anup Patel <anup@...infault.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	linux-mips@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Cc: Nam Cao <namcao@...utronix.de>
Subject: [PATCH 01/12] irqdomain: Add device pointer to irq_domain_info and msi_domain_info

From: Thomas Gleixner <tglx@...utronix.de>

Add device pointer to irq_domain_info and msi_domain_info, so that device
can be specified at domain creation.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Nam Cao <namcao@...utronix.de>
---
 include/linux/irqdomain.h | 2 ++
 include/linux/msi.h       | 2 ++
 kernel/irq/irqdomain.c    | 1 +
 kernel/irq/msi.c          | 3 ++-
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 7387d183029b7..266b5e5bb8ced 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -279,6 +279,7 @@ struct irq_domain_chip_generic_info;
  *			domains are added using same fwnode
  * @ops:		Domain operation callbacks
  * @host_data:		Controller private data pointer
+ * @dev:		Device which creates the domain
  * @dgc_info:		Geneneric chip information structure pointer used to
  *			create generic chips for the domain if not NULL.
  * @init:		Function called when the domain is created.
@@ -298,6 +299,7 @@ struct irq_domain_info {
 	const char				*name_suffix;
 	const struct irq_domain_ops		*ops;
 	void					*host_data;
+	struct device				*dev;
 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
 	/**
 	 * @parent: Pointer to the parent irq domain used in a hierarchy domain
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 6863540f4b717..77227d23ea84b 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -488,6 +488,7 @@ struct msi_domain_ops {
  *			gets initialized to the maximum software index limit
  *			by the domain creation code.
  * @ops:		The callback data structure
+ * @dev:		Device which creates the domain
  * @chip:		Optional: associated interrupt chip
  * @chip_data:		Optional: associated interrupt chip data
  * @handler:		Optional: associated interrupt flow handler
@@ -501,6 +502,7 @@ struct msi_domain_info {
 	enum irq_domain_bus_token	bus_token;
 	unsigned int			hwsize;
 	struct msi_domain_ops		*ops;
+	struct device			*dev;
 	struct irq_chip			*chip;
 	void				*chip_data;
 	irq_flow_handler_t		handler;
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index c8b6de09047be..4afbd3ac532fb 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -317,6 +317,7 @@ static struct irq_domain *__irq_domain_instantiate(const struct irq_domain_info
 
 	domain->flags |= info->domain_flags;
 	domain->exit = info->exit;
+	domain->dev = info->dev;
 
 #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
 	if (info->parent) {
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 9febe797a5f6a..9b09ad3f9914c 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -889,6 +889,7 @@ static struct irq_domain *__msi_create_irq_domain(struct fwnode_handle *fwnode,
 
 	if (domain) {
 		irq_domain_update_bus_token(domain, info->bus_token);
+		domain->dev = info->dev;
 		if (info->flags & MSI_FLAG_PARENT_PM_DEV)
 			domain->pm_dev = parent->pm_dev;
 	}
@@ -1051,6 +1052,7 @@ bool msi_create_device_irq_domain(struct device *dev, unsigned int domid,
 	bundle->info.data = domain_data;
 	bundle->info.chip_data = chip_data;
 	bundle->info.alloc_data = &bundle->alloc_info;
+	bundle->info.dev = dev;
 
 	pops = parent->msi_parent_ops;
 	snprintf(bundle->name, sizeof(bundle->name), "%s%s-%s",
@@ -1089,7 +1091,6 @@ bool msi_create_device_irq_domain(struct device *dev, unsigned int domid,
 	if (!domain)
 		return false;
 
-	domain->dev = dev;
 	dev->msi.data->__domains[domid].domain = domain;
 
 	if (msi_domain_prepare_irqs(domain, dev, hwsize, &bundle->alloc_info)) {
-- 
2.39.5