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Message-Id: <1470861136-23017-3-git-send-email-robert.foss@collabora.com> Date: Wed, 10 Aug 2016 16:32:16 -0400 From: robert.foss@...labora.com To: mathias.nyman@...el.com, gregkh@...uxfoundation.org, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Julius Werner <jwerner@...omium.org>, Andrew Bresticker <abrestic@...omium.org>, Felipe Balbi <felipe.balbi@...ux.intel.com> Cc: Robert Foss <robert.foss@...labora.com> Subject: [PACTH v6 2/2] usb: xhci: plat: Enable async suspend/resume From: Andrew Bresticker <abrestic@...omium.org> 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. Signed-off-by: Andrew Bresticker <abrestic@...omium.org> Tested-by: Andrew Bresticker <abrestic@...omium.org> Tested-by: Robert Foss <robert.foss@...labora.com> Signed-off-by: Robert Foss <robert.foss@...labora.com> --- drivers/usb/host/xhci-plat.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index ba4efe7..c35b7fe 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -248,6 +248,7 @@ 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; -- 2.7.4
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