From: Robert Foss <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>,
Brian Norris <briannorris@chromium.org>,
Baolin Wang <baolin.wang@linaro.org>
Cc: Robert Foss <robert.foss@collabora.com>
Subject: [PATCH RESEND v8] usb: xhci: plat: Enable async suspend/resume
Date: Mon, 20 Feb 2017 10:48:26 -0500 [thread overview]
Message-ID: <20170220154826.23183-1-robert.foss@collabora.com> (raw)
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>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
---
Changes since v8:
- Rebased on upstream/master
- Added r-b of Baolin Wang
drivers/usb/host/xhci-plat.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index e5834dd9bcde..8ef34fe4d5c0 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -255,6 +255,8 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto dealloc_usb2_hcd;
+ device_enable_async_suspend(&pdev->dev);
+
return 0;
--
2.11.0.453.g787f75f05
next reply other threads:[~2017-02-20 15:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 15:48 Robert Foss [this message]
2017-02-21 11:08 ` [PATCH RESEND v8] usb: xhci: plat: Enable async suspend/resume Mathias Nyman
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