By enabling runtime pm in this driver is allows users of xhci-plat to
enter into runtime pm. This is not full runtime pm support (AKA
xhci-plat doesn't actually power anything off when in runtime suspend
mode) but just basic enablement.
Signed-off-by: Vivek Gautam <gautam.vi...@samsung.com>
Signed-off-by: Doug Anderson <diand...@chromium.org>
---
drivers/usb/host/xhci-plat.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index df90fe5..6ad7cfb 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -139,6 +139,10 @@ static int xhci_plat_probe(struct platform_device *pdev)
goto dealloc_usb2_hcd;
}
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_forbid(&pdev->dev);
+
/*
* Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
* is called by usb_add_hcd().
@@ -149,10 +153,13 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto put_usb3_hcd;
+ pm_runtime_allow(&pdev->dev);
+
return 0;
put_usb3_hcd:
usb_put_hcd(xhci->shared_hcd);
+ pm_runtime_disable(&pdev->dev);
dealloc_usb2_hcd:
usb_remove_hcd(hcd);
@@ -174,6 +181,8 @@ static int xhci_plat_remove(struct platform_device *dev)
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ pm_runtime_disable(&dev->dev);
+
usb_remove_hcd(xhci->shared_hcd);
usb_put_hcd(xhci->shared_hcd);
--
1.7.6.5
--
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