diff options
| author |   Gregory Herrero <gregory.herrero@intel.com> | 2015-09-29 12:08:28 +0200 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2015-10-01 12:40:27 -0500 |
| commit | 61f7223bf14689382fdf36b7580f206745c2409a (patch) | |
| tree | d81fc7466e37c9f0a164adc325240a92b81c419d /drivers/usb/dwc2 | |
| parent | usb: dwc2: gadget: unmask idstschng interrupt only if controller supports it (diff) | |
| download | linux-dev-61f7223bf14689382fdf36b7580f206745c2409a.tar.xz linux-dev-61f7223bf14689382fdf36b7580f206745c2409a.zip | |
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: Jianqiang Tang <jianqiang.tang@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index e87a7359e632..ef964814b928 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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) |