linux-kernel - Re: [PATCH 4.4 13/49] usb: dwc2: Fix UDC state tracking

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 08 Dec 2017 03:37:17 +0000
From:   Ben Hutchings <ben.hutchings@...ethink.co.uk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org, Wei Xu <xuwei5@...ilicon.com>,
        Guodong Xu <guodong.xu@...aro.org>,
        Amit Pundir <amit.pundir@...aro.org>,
        YongQin Liu <yongqin.liu@...aro.org>,
        John Youn <johnyoun@...opsys.com>,
        Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>,
        Douglas Anderson <dianders@...omium.org>,
        Chen Yu <chenyu56@...wei.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        linux-usb@...r.kernel.org, Minas Harutyunyan <hminas@...opsys.com>,
        John Stultz <john.stultz@...aro.org>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: Re: [PATCH 4.4 13/49] usb: dwc2: Fix UDC state tracking

On Thu, 2017-12-07 at 14:07 +0100, Greg Kroah-Hartman wrote:
> 4.4-stable review patch.  If anyone has any objections, please let me
> know.
> 
> ------------------
> 
> From: John Stultz <john.stultz@...aro.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.

Then you should add that (commit d2471d4a24df).

Ben.

> Cc: Wei Xu <xuwei5@...ilicon.com>
> Cc: Guodong Xu <guodong.xu@...aro.org>
> Cc: Amit Pundir <amit.pundir@...aro.org>
> Cc: YongQin Liu <yongqin.liu@...aro.org>
> Cc: John Youn <johnyoun@...opsys.com>
> Cc: Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
> Cc: Douglas Anderson <dianders@...omium.org>
> Cc: Chen Yu <chenyu56@...wei.com>
> Cc: Felipe Balbi <felipe.balbi@...ux.intel.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: linux-usb@...r.kernel.org
> Acked-by: Minas Harutyunyan <hminas@...opsys.com>
> Tested-by: Minas Harutyunyan <hminas@...opsys.com>
> Reported-by: Amit Pundir <amit.pundir@...aro.org>
> Signed-off-by: John Stultz <john.stultz@...aro.org>
> Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
> Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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);
>  }
>  
>  /**
> 
> 
> 
-- 
Ben Hutchings
Software Developer, Codethink Ltd.