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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 <gregory.herrero@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gregory Herrero 2015-04-03 10:53:25 +02:00 committed by Greg Kroah-Hartman
parent b9cd825d06
commit 42a6630a87
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/dwc2/hcd.c
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@ -1529,13 +1529,13 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
dev_dbg(hsotg->dev, dev_dbg(hsotg->dev,
"ClearPortFeature USB_PORT_FEAT_SUSPEND\n"); "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
writel(0, hsotg->regs + PCGCTL); writel(0, hsotg->regs + PCGCTL);
msleep(USB_RESUME_TIMEOUT); usleep_range(20000, 40000);
hprt0 = dwc2_read_hprt0(hsotg); hprt0 = dwc2_read_hprt0(hsotg);
hprt0 |= HPRT0_RES; hprt0 |= HPRT0_RES;
writel(hprt0, hsotg->regs + HPRT0); writel(hprt0, hsotg->regs + HPRT0);
hprt0 &= ~HPRT0_SUSP; hprt0 &= ~HPRT0_SUSP;
usleep_range(100000, 150000); msleep(USB_RESUME_TIMEOUT);
hprt0 &= ~HPRT0_RES; hprt0 &= ~HPRT0_RES;
writel(hprt0, hsotg->regs + HPRT0); writel(hprt0, hsotg->regs + HPRT0);