linux-kernel - [PATCH v1 9/9] PCI: PM: Set power.strict_midlayer in pci_pm

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: <116746583.nniJfEyVGO@rjwysocki.net>
Date: Wed, 25 Jun 2025 21:25:21 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Linux ACPI <linux-acpi@...r.kernel.org>,
 Linux PCI <linux-pci@...r.kernel.org>, Ulf Hansson <ulf.hansson@...aro.org>,
 Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: [PATCH v1 9/9] PCI: PM: Set power.strict_midlayer in pci_pm_init()

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

The PCI bus type does not expect its runtime PM callbacks,
pci_pm_runtime_suspend() and pci_pm_runtime_resume(), to be invoked at
any point during system-wide suspend and resume, so make it express
that expectation by setting power.strict_midlayer for all PCI devices.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/pci/pci.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3208,6 +3208,8 @@
 	u16 status;
 	u16 pmc;

+	dev_pm_strict_midlayer(&dev->dev, true);
+
 	device_enable_async_suspend(&dev->dev);
 	dev->wakeup_prepared = false;