On 2016-07-28 08:24 PM, Felipe Balbi wrote:
Hi, robert.foss@xxxxxxxxxxxxx writes:From: Andrew Bresticker <abrestic@xxxxxxxxxxxx> Enable runtime PM for the xhci-plat device so that the parent device may implement runtime PM. Signed-off-by: Andrew Bresticker <abrestic@xxxxxxxxxxxx> Tested-by: Robert Foss <robert.foss@xxxxxxxxxxxxx> Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx> --- drivers/usb/host/xhci-plat.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index ed56bf9..fbd45c2 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -246,6 +246,9 @@ static int xhci_plat_probe(struct platform_device *pdev) if (ret) goto dealloc_usb2_hcd; + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + return 0; @@ -274,6 +277,8 @@ static int xhci_plat_remove(struct platform_device *dev) struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct clk *clk = xhci->clk; + pm_runtime_disable(&dev->dev); + usb_remove_hcd(xhci->shared_hcd); usb_phy_shutdown(hcd->usb_phy); @@ -292,7 +297,9 @@ static int xhci_plat_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ret; + pm_runtime_get_sync(dev);you need to check for possible errors here. Ditto to the other occurence below.
Thanks for the feedback (on this and the 0/2), I'll fix the issues and release a v3.
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