From 42a6630a875c17b8ad129d2cc0472217107147ad Mon Sep 17 00:00:00 2001 From: Gregory Herrero Date: Fri, 3 Apr 2015 10:53:25 +0200 Subject: [PATCH] usb: dwc2: host: sleep USB_RESUME_TIMEOUT during resume msleep(USB_RESUME_TIMEOUT) must be done when the controller drives the resume. This is true after HPRT0_RES is written. Moreover, restore the delay after controller power is up. Signed-off-by: Gregory Herrero Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/hcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 93bd4a10ab52..fbbbac2150a5 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -1529,13 +1529,13 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq, dev_dbg(hsotg->dev, "ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); writel(0, hsotg->regs + PCGCTL); - msleep(USB_RESUME_TIMEOUT); + usleep_range(20000, 40000); hprt0 = dwc2_read_hprt0(hsotg); hprt0 |= HPRT0_RES; writel(hprt0, hsotg->regs + HPRT0); hprt0 &= ~HPRT0_SUSP; - usleep_range(100000, 150000); + msleep(USB_RESUME_TIMEOUT); hprt0 &= ~HPRT0_RES; writel(hprt0, hsotg->regs + HPRT0); -- 2.30.2