linux-kernel - [RFC 1/5] usb: ohci-exynos: enable async suspend/resume

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 18 Dec 2013 16:09:30 +0530
From:	Yuvaraj Kumar C D <yuvaraj.cd@...il.com>
To:	stern@...land.harvard.edu, gregkh@...uxfoundation.org,
	kgene.kim@...sung.com, linux-usb@...r.kernel.org,
	sarah.a.sharp@...ux.intel.com, balbi@...com,
	gautam.vivek@...sung.com, joshi@...sung.com
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andrew Bresticker <abrestic@...omium.org>,
	Yuvaraj Kumar C D <yuvaraj.cd@...sung.com>
Subject: [RFC 1/5] usb: ohci-exynos: 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 Exynos OHCI 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>
Reviewed-by: Julius Werner <jwerner@...omium.org>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@...sung.com>
---
 drivers/usb/host/ohci-exynos.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 68588d8..faad2bdc 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -137,6 +137,8 @@ skip_phy:
 	if (exynos_ohci->otg)
 		exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self);
 
+	device_enable_async_suspend(&pdev->dev);
+
 	platform_set_drvdata(pdev, hcd);
 
 	exynos_ohci_phy_enable(pdev);
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/