diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 2bd6e6bfc241..260010abf9d8 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4393,6 +4393,7 @@ static int _dwc2_hcd_start(struct usb_hcd *hcd) struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); struct usb_bus *bus = hcd_to_bus(hcd); unsigned long flags; + int ret; dev_dbg(hsotg->dev, "DWC OTG HCD START\n"); @@ -4408,6 +4409,13 @@ static int _dwc2_hcd_start(struct usb_hcd *hcd) dwc2_hcd_reinit(hsotg); + /* enable external vbus supply before resuming root hub */ + spin_unlock_irqrestore(&hsotg->lock, flags); + ret = dwc2_vbus_supply_init(hsotg); + if (ret) + return ret; + spin_lock_irqsave(&hsotg->lock, flags); + /* Initialize and connect root hub if one is not already attached */ if (bus->root_hub) { dev_dbg(hsotg->dev, "DWC OTG HCD Has Root Hub\n"); @@ -4417,7 +4425,7 @@ static int _dwc2_hcd_start(struct usb_hcd *hcd) spin_unlock_irqrestore(&hsotg->lock, flags); - return dwc2_vbus_supply_init(hsotg); + return 0; } /* @@ -4482,7 +4490,9 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) hprt0 |= HPRT0_SUSP; hprt0 &= ~HPRT0_PWR; dwc2_writel(hsotg, hprt0, HPRT0); + spin_unlock_irqrestore(&hsotg->lock, flags); dwc2_vbus_supply_exit(hsotg); + spin_lock_irqsave(&hsotg->lock, flags); } /* Enter partial_power_down */ |