Subject: [PATCH 2/8] ACPI: PM: Use the new device_to_pm() helper to access struct dev_pm_ops

From: Krzysztof Wilczyński <[email-masked]>
Date: Mon, 25 May 2020 18:26:02 +0000

Use the new device_to_pm() helper to access Power Management callbacs
(struct dev_pm_ops) for a particular device (struct device_driver).

No functional change intended.

Signed-off-by: Krzysztof Wilczyński <[email-masked]>
---
 drivers/acpi/device_pm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 5832bc10aca8..b98a32c48fbe 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -1022,9 +1022,10 @@ static bool acpi_dev_needs_resume(struct device *dev, struct acpi_device *adev)
 int acpi_subsys_prepare(struct device *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(dev);
+	const struct dev_pm_ops *pm = driver_to_pm(dev->driver);
 
-	if (dev->driver && dev->driver->pm && dev->driver->pm->prepare) {
-		int ret = dev->driver->pm->prepare(dev);
+	if (pm && pm->prepare) {
+		int ret = pm->prepare(dev);
 
 		if (ret < 0)
 			return ret;
-- 
2.26.2