Commit ddb473a5 authored by Guan-Yu Lin's avatar Guan-Yu Lin Committed by Greg Kroah-Hartman
Browse files

usb: xhci-plat: separate dev_pm_ops for each pm_event 



Separate dev_pm_ops for different power events such as suspend, thaw,
and hibernation. This is crucial when xhci-plat driver needs to adapt
its behavior based on different power state changes.

Signed-off-by: default avatarGuan-Yu Lin <guanyulin@google.com>
Link: https://lore.kernel.org/r/20250911142051.90822-2-guanyulin@google.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250911142051.90822-2-guanyulin@google.com
parent 6f9871b3

drivers/usb/host/xhci-plat.c

+19 −4
Original line number Diff line number Diff line
@@ -454,7 +454,7 @@ void xhci_plat_remove(struct platform_device *dev) 
}

EXPORT_SYMBOL_GPL(xhci_plat_remove);



static int xhci_plat_suspend(struct device *dev)

static int xhci_plat_suspend_common(struct device *dev)

{

	struct usb_hcd	*hcd = dev_get_drvdata(dev);

	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -482,6 +482,16 @@ static int xhci_plat_suspend(struct device *dev) 
	return 0;

}



static int xhci_plat_suspend(struct device *dev)

{

	return xhci_plat_suspend_common(dev);

}



static int xhci_plat_freeze(struct device *dev)

{

	return xhci_plat_suspend_common(dev);

}



static int xhci_plat_resume_common(struct device *dev, bool power_lost)

{

	struct usb_hcd	*hcd = dev_get_drvdata(dev);
@@ -529,6 +539,11 @@ static int xhci_plat_resume(struct device *dev) 
	return xhci_plat_resume_common(dev, false);

}



static int xhci_plat_thaw(struct device *dev)

{

	return xhci_plat_resume_common(dev, false);

}



static int xhci_plat_restore(struct device *dev)

{

	return xhci_plat_resume_common(dev, true);
@@ -558,9 +573,9 @@ static int __maybe_unused xhci_plat_runtime_resume(struct device *dev) 
const struct dev_pm_ops xhci_plat_pm_ops = {

	.suspend = pm_sleep_ptr(xhci_plat_suspend),

	.resume = pm_sleep_ptr(xhci_plat_resume),

	.freeze = pm_sleep_ptr(xhci_plat_suspend),

	.thaw = pm_sleep_ptr(xhci_plat_resume),

	.poweroff = pm_sleep_ptr(xhci_plat_suspend),

	.freeze = pm_sleep_ptr(xhci_plat_freeze),

	.thaw = pm_sleep_ptr(xhci_plat_thaw),

	.poweroff = pm_sleep_ptr(xhci_plat_freeze),

	.restore = pm_sleep_ptr(xhci_plat_restore),



	SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,