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Commit 42a6630a authored by Gregory Herrero's avatar Gregory Herrero Committed by Greg Kroah-Hartman
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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: default avatarGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b9cd825d

drivers/usb/dwc2/hcd.c

+2 −2
Original line number Diff line number Diff line
@@ -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);