Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1534471
| From | Robert Foss <robert.foss@collabora.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v7 2/2] usb: xhci: plat: Enable async suspend/resume |
| Date | 2016-12-01 22:50 +0100 |
| Message-ID | <sJHoR-2vd-17@gated-at.bofh.it> (permalink) |
| References | <sJHoR-2vd-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Andrew Bresticker <abrestic@chromium.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@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Tested-by: Robert Foss <robert.foss@collabora.com> Signed-off-by: Robert Foss <robert.foss@collabora.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 ba4efe74f537..c35b7fe3c999 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; -- 2.11.0
Back to linux.kernel | Previous | Next | Find similar | Unroll thread
[PATCH v7 2/2] usb: xhci: plat: Enable async suspend/resume Robert Foss <robert.foss@collabora.com> - 2016-12-01 22:50 +0100
csiph-web