Commit 61f7223b authored by Gregory Herrero's avatar Gregory Herrero Committed by Felipe Balbi

usb: dwc2: gadget: exit hibernation before power down

When disconnecting cable, controller will detect a suspend condition
and enter partial power down. If vbus_session is called by the phy
driver during hibernation, make sure controller exit hibernation
before it is accessed.
Signed-off-by: default avatarJianqiang Tang <jianqiang.tang@intel.com>
Signed-off-by: default avatarGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: default avatarMian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: default avatarRobert Baldyga <r.baldyga@samsung.com>
Tested-by: default avatarDinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: default avatarJohn Youn <johnyoun@synopsys.com>
Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 1ee6903b
......@@ -3285,14 +3285,15 @@ static int dwc2_hsotg_vbus_session(struct usb_gadget *gadget, int is_active)
dev_dbg(hsotg->dev, "%s: is_active: %d\n", __func__, is_active);
spin_lock_irqsave(&hsotg->lock, flags);
/*
* If controller is hibernated, it must exit from hibernation
* before being initialized / de-initialized
*/
if (hsotg->lx_state == DWC2_L2)
dwc2_exit_hibernation(hsotg, false);
if (is_active) {
hsotg->op_state = OTG_STATE_B_PERIPHERAL;
/*
* If controller is hibernated, it must exit from hibernation
* before being initialized
*/
if (hsotg->lx_state == DWC2_L2)
dwc2_exit_hibernation(hsotg, false);
dwc2_hsotg_core_init_disconnected(hsotg, false);
if (hsotg->enabled)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment