4.4-stable review patch. If anyone has any objections, please let me know.
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From: John Stultz john.stultz@linaro.org
[ Upstream commit ce2b21a4e5ce042c0a42c9db8fa9e0f849427d5e ]
It has been noticed that the dwc2 udc state reporting doesn't seem to work (at least on HiKey boards). Where after the initial setup, the sysfs /sys/class/udc/f72c0000.usb/state file would report "configured" no matter the state of the OTG port.
This patch adds a call so that we report to the UDC layer when the gadget device is disconnected.
This patch does depend on the previous patch ("usb: dwc2: Improve gadget state disconnection handling") in this patch set in order to properly work.
Cc: Wei Xu xuwei5@hisilicon.com Cc: Guodong Xu guodong.xu@linaro.org Cc: Amit Pundir amit.pundir@linaro.org Cc: YongQin Liu yongqin.liu@linaro.org Cc: John Youn johnyoun@synopsys.com Cc: Minas Harutyunyan Minas.Harutyunyan@synopsys.com Cc: Douglas Anderson dianders@chromium.org Cc: Chen Yu chenyu56@huawei.com Cc: Felipe Balbi felipe.balbi@linux.intel.com Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org Acked-by: Minas Harutyunyan hminas@synopsys.com Tested-by: Minas Harutyunyan hminas@synopsys.com Reported-by: Amit Pundir amit.pundir@linaro.org Signed-off-by: John Stultz john.stultz@linaro.org Signed-off-by: Felipe Balbi felipe.balbi@linux.intel.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc2/gadget.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -2206,6 +2206,8 @@ void dwc2_hsotg_disconnect(struct dwc2_h
call_gadget(hsotg, disconnect); hsotg->lx_state = DWC2_L3; + + usb_gadget_set_state(&hsotg->gadget, USB_STATE_NOTATTACHED); }
/**