On Wednesday, April 09, 2014 1:01 PM, Vivek Gautam wrote: > > 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 <gautam.vivek@xxxxxxxxxxx> > Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > Cc: Jingoo Han <jg1.han@xxxxxxxxxxx> Acked-by: Jingoo Han <jg1.han@xxxxxxxxxxx> Best regards, 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-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
