4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: John Stultz <john.stu...@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 <xuw...@hisilicon.com>
Cc: Guodong Xu <guodong...@linaro.org>
Cc: Amit Pundir <amit.pun...@linaro.org>
Cc: YongQin Liu <yongqin....@linaro.org>
Cc: John Youn <johny...@synopsys.com>
Cc: Minas Harutyunyan <minas.harutyun...@synopsys.com>
Cc: Douglas Anderson <diand...@chromium.org>
Cc: Chen Yu <cheny...@huawei.com>
Cc: Felipe Balbi <felipe.ba...@linux.intel.com>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Acked-by: Minas Harutyunyan <hmi...@synopsys.com>
Tested-by: Minas Harutyunyan <hmi...@synopsys.com>
Reported-by: Amit Pundir <amit.pun...@linaro.org>
Signed-off-by: John Stultz <john.stu...@linaro.org>
Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@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
@@ -2467,6 +2467,8 @@ 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);
}
/**
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