lkml.org 
[lkml]   [2017]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [RESEND x2][PATCH 3/3] usb: dwc2: Fix UDC state tracking
Date
On 9/20/2017 11:57 PM, John Stultz wrote:
> 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.
>
> 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
> Reported-by: Amit Pundir <amit.pundir@linaro.org>
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> drivers/usb/dwc2/gadget.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
> index 7fd0e38..603c216 100644
> --- a/drivers/usb/dwc2/gadget.c
> +++ b/drivers/usb/dwc2/gadget.c
> @@ -3202,6 +3202,8 @@ void dwc2_hsotg_disconnect(struct dwc2_hsotg *hsotg)
>
> call_gadget(hsotg, disconnect);
> hsotg->lx_state = DWC2_L3;
> +
> + usb_gadget_set_state(&hsotg->gadget, USB_STATE_NOTATTACHED);
> }
>
> /**
>

Tested by: Minas Harutyunyan <hminas@synopsys.com>

\
 
 \ /
  Last update: 2017-10-03 12:03    [W:0.072 / U:0.092 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site