usb: dwc2: host: resume root hub on port connect

Once hub is runtime suspended, dwc2 must resume it
on port connect event.
Else, roothub will stay in suspended state and will
not resume transfers.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index 551ba878b003c99a469a4cfa2421c2a1151ad184..6927bba86245844748e57e8d517bb3c2764d8763 100644 (file)
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -350,6 +350,9 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
                dev_vdbg(hsotg->dev,
                         "--Port Interrupt HPRT0=0x%08x Port Connect Detected--\n",
                         hprt0);
+               if (hsotg->lx_state != DWC2_L0)
+                       usb_hcd_resume_root_hub(hsotg->priv);
+
                hsotg->flags.b.port_connect_status_change = 1;
                hsotg->flags.b.port_connect_status = 1;
                hprt0_modify |= HPRT0_CONNDET;