From: robert.foss@collabora.com
To: mathias.nyman@intel.com, gregkh@linuxfoundation.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Julius Werner <jwerner@chromium.org>,
Andrew Bresticker <abrestic@chromium.org>,
Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Robert Foss <robert.foss@collabora.com>
Subject: [PACTH v3 2/2] usb: xhci: plat: Enable async suspend/resume
Date: Mon, 8 Aug 2016 16:48:27 -0400 [thread overview]
Message-ID: <1470689307-18070-3-git-send-email-robert.foss@collabora.com> (raw)
In-Reply-To: <1470689307-18070-1-git-send-email-robert.foss@collabora.com>
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 4f39d4e..89aef0e 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
next prev parent reply other threads:[~2016-08-08 20:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-08 20:48 [PACTH v3 0/2] usb: xhci: plat: Enable PM, async resume/suspend robert.foss
2016-08-08 20:48 ` [PACTH v3 1/2] usb: xhci: plat: Enable runtime PM robert.foss
2016-08-09 9:19 ` Felipe Balbi
2016-08-09 15:31 ` Robert Foss
2016-08-08 20:48 ` robert.foss [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-07-29 19:54 [PACTH v3 0/2] usb: xhci: plat: Enable PM, async resume/suspend robert.foss
2016-07-29 19:54 ` [PACTH v3 2/2] usb: xhci: plat: Enable async suspend/resume robert.foss
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