Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750784AbaDIEBB (ORCPT ); Wed, 9 Apr 2014 00:01:01 -0400 Received: from mail-pb0-f41.google.com ([209.85.160.41]:34637 "EHLO mail-pb0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750706AbaDIEA6 (ORCPT ); Wed, 9 Apr 2014 00:00:58 -0400 From: Vivek Gautam To: linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: gregkh@linuxfoundation.org, kgene.kim@samsung.com, Alan Stern , Jingoo Han Subject: [PATCH 1/2] usb: ehci-exynos: Return immediately from suspend if ehci_suspend fails Date: Wed, 9 Apr 2014 09:30:41 +0530 Message-Id: <1397016042-4451-1-git-send-email-gautam.vivek@samsung.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch 'b8efdaf USB: EHCI: add check for wakeup/suspend race' adds a check for possible race between suspend and wakeup interrupt, and thereby it returns -EBUSY as error code if there's a wakeup interrupt. So the platform host controller should not proceed further with its suspend callback, rather should return immediately to avoid powering down the essential things, like phy. Signed-off-by: Vivek Gautam Cc: Alan Stern Cc: Jingoo Han --- Based on 'usb-next' branch of Greg's usb tree. drivers/usb/host/ehci-exynos.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index d1d8c47..a4550eb 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -212,6 +212,8 @@ static int exynos_ehci_suspend(struct device *dev) int rc; rc = ehci_suspend(hcd, do_wakeup); + if (rc) + return rc; if (exynos_ehci->otg) exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); @@ -221,7 +223,7 @@ static int exynos_ehci_suspend(struct device *dev) clk_disable_unprepare(exynos_ehci->clk); - return rc; + return 0; } static int exynos_ehci_resume(struct device *dev) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/