linux-kernel - [PATCH 1/5] agp/efficeon: Convert to generic power management

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: <20220607034340.307318-2-helgaas@kernel.org>
Date:   Mon,  6 Jun 2022 22:43:36 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     David Airlie <airlied@...ux.ie>,
        "Rafael J . Wysocki" <rafael@...nel.org>
Cc:     Vaibhav Gupta <vaibhavgupta40@...il.com>, linux-pm@...r.org,
        linux-pci@...r.org, linux-kernel@...r.kernel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 1/5] agp/efficeon: Convert to generic power management

From: Bjorn Helgaas <bhelgaas@...gle.com>

Convert agpgart-efficeon from legacy PCI power management to the generic
power management framework.

Previously agpgart-efficeon used legacy PCI power management, which means
agp_efficeon_suspend() and agp_efficeon_resume() were responsible for both
device-specific things and generic PCI things like saving and restoring
config space and managing power state.

In this case, agp_efficeon_suspend() was empty, and agp_efficeon_resume()
already did only device-specific things, so the conversion is trivial.

Based on 0aeddbd0cb07 ("via-agp: convert to generic power management") by
Vaibhav Gupta <vaibhavgupta40@...il.com>.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 drivers/char/agp/efficeon-agp.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index c53f0f9ef5b0..7cf2c9b0bb02 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -412,18 +412,11 @@ static void agp_efficeon_remove(struct pci_dev *pdev)
 	agp_put_bridge(bridge);
 }
 
-#ifdef CONFIG_PM
-static int agp_efficeon_suspend(struct pci_dev *dev, pm_message_t state)
-{
-	return 0;
-}
-
-static int agp_efficeon_resume(struct pci_dev *pdev)
+static int __maybe_unused agp_efficeon_resume(struct device *dev)
 {
 	printk(KERN_DEBUG PFX "agp_efficeon_resume()\n");
 	return efficeon_configure();
 }
-#endif
 
 static const struct pci_device_id agp_efficeon_pci_table[] = {
 	{
@@ -437,6 +430,8 @@ static const struct pci_device_id agp_efficeon_pci_table[] = {
 	{ }
 };
 
+static SIMPLE_DEV_PM_OPS(agp_efficeon_pm_ops, NULL, agp_efficeon_resume);
+
 MODULE_DEVICE_TABLE(pci, agp_efficeon_pci_table);
 
 static struct pci_driver agp_efficeon_pci_driver = {
@@ -444,10 +439,7 @@ static struct pci_driver agp_efficeon_pci_driver = {
 	.id_table	= agp_efficeon_pci_table,
 	.probe		= agp_efficeon_probe,
 	.remove		= agp_efficeon_remove,
-#ifdef CONFIG_PM
-	.suspend	= agp_efficeon_suspend,
-	.resume		= agp_efficeon_resume,
-#endif
+	.driver.pm	= &agp_efficeon_pm_ops,
 };
 
 static int __init agp_efficeon_init(void)
-- 
2.25.1