From d72175103f25783b0504f864a4f381621a789ca2 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Thu, 10 Apr 2014 15:58:01 +0530 Subject: [PATCH] usb: ehci-exynos: Return immediately from suspend if ehci_suspend fails 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 Acked-by: Jingoo Han Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-exynos.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index d1d8c47777c5..7f425acd9be5 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); -- 2.20.1