linux-kernel - [PATCH v1] hwmon: (fam15h_power) Use generic power management

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Message-ID: <20251216181401.598273-1-vaibhavgupta40@gmail.com>
Date: Tue, 16 Dec 2025 18:13:59 +0000
From: Vaibhav Gupta <vaibhavgupta40@...il.com>
To: Huang Rui <ray.huang@....com>,
	Guenter Roeck <linux@...ck-us.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Vaibhav Gupta <vaibhavgupta40@...il.com>,
	linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] hwmon: (fam15h_power) Use generic power management

Switch to the generic PCI power management framework and remove legacy
.resume() callback. With the generic framework, the
standard PCI related work like:
        - pci_save/restore_state()
        - pci_enable/disable_device()
        - pci_set_power_state()
is handled by the PCI core and this driver should implement only
device specific operations in its respective callback function.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
---
 drivers/hwmon/fam15h_power.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
index 8ecebea53651..efcbea2d070e 100644
--- a/drivers/hwmon/fam15h_power.c
+++ b/drivers/hwmon/fam15h_power.c
@@ -372,15 +372,14 @@ static void tweak_runavg_range(struct pci_dev *pdev)
 		REG_TDP_RUNNING_AVERAGE, val);
 }
 
-#ifdef CONFIG_PM
-static int fam15h_power_resume(struct pci_dev *pdev)
+static int fam15h_power_resume(struct device *dev)
 {
+	struct pci_dev *pdev = to_pci_dev(dev);
 	tweak_runavg_range(pdev);
 	return 0;
 }
-#else
-#define fam15h_power_resume NULL
-#endif
+
+static DEFINE_SIMPLE_DEV_PM_OPS(fam15h_power_ops, NULL, fam15h_power_resume);
 
 static int fam15h_power_init_data(struct pci_dev *f4,
 				  struct fam15h_power_data *data)
@@ -493,7 +492,7 @@ static struct pci_driver fam15h_power_driver = {
 	.name = "fam15h_power",
 	.id_table = fam15h_power_id_table,
 	.probe = fam15h_power_probe,
-	.resume = fam15h_power_resume,
+	.driver.pm = &fam15h_power_ops,
 };
 
 module_pci_driver(fam15h_power_driver);
-- 
2.51.0