usb: dwc2: Allow exit hibernation in urb enqueue
When core is in hibernation state and an external hub is connected, upper layer sends URB enqueue request, which results in port reset issue. - Added exit from hibernation state to avoid port reset issue and process upper layer request properly. Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210416124803.D1C1FA005F@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -4631,12 +4631,26 @@ static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
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struct dwc2_qh *qh;
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bool qh_allocated = false;
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struct dwc2_qtd *qtd;
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struct dwc2_gregs_backup *gr;
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gr = &hsotg->gr_backup;
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if (dbg_urb(urb)) {
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dev_vdbg(hsotg->dev, "DWC OTG HCD URB Enqueue\n");
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dwc2_dump_urb_info(hcd, urb, "urb_enqueue");
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}
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if (hsotg->hibernated) {
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if (gr->gotgctl & GOTGCTL_CURMODE_HOST)
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retval = dwc2_exit_hibernation(hsotg, 0, 0, 1);
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else
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retval = dwc2_exit_hibernation(hsotg, 0, 0, 0);
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if (retval)
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dev_err(hsotg->dev,
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"exit hibernation failed.\n");
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}
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if (hsotg->in_ppd) {
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retval = dwc2_exit_partial_power_down(hsotg, 0, true);
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if (retval)
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