usb: xhci: plat: Enable runtime PM

This series enables runtime PM and asynchronous resume/suspend support for xhci-plat devices.

Due to Baolin Wangs series[1] part 1/2 of this series is now dropped.

[1] https://lkml.org/lkml/2016/12/13/32

Andrew Bresticker (1):
usb: xhci: plat: Enable async suspend/resume

 drivers/usb/host/xhci-plat.c | 1 +
 1 file changed, 1 insertion(+)

2.11.0.453.g787f75f05

From: Andrew Bresticker <[email protected]>

USB host controllers can take a significant amount of time to suspend and resume, adding several hundred miliseconds to the kernel resume time. Since the XHCI controller has no outside dependencies (other than clocks, which are suspended late/resumed early), allow it to suspend and resume asynchronously.

---
 drivers/usb/host/xhci-plat.c | 1 +
 1 file changed, 1 insertion(+)

index 3cf8e120c620..4d6741a0d8f8 100644
@@ -257,6 +257,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
 
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
+	device_enable_async_suspend(&pdev->dev);
 
 	return 0;
 

2.11.0.453.g787f75f05