linux-kernel - Re: [PATCH v6 07/10] usb: dwc3: gadget: Fix suspend/resume during dual-role mode

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]

Message-ID: <570BA2AA.8030308@ti.com>
Date:	Mon, 11 Apr 2016 16:12:10 +0300
From:	Roger Quadros <rogerq@...com>
To:	Felipe Balbi <balbi@...nel.org>
CC:	<tony@...mide.com>, <Joao.Pinto@...opsys.com>,
	<sergei.shtylyov@...entembedded.com>, <peter.chen@...escale.com>,
	<jun.li@...escale.com>, <grygorii.strashko@...com>,
	<yoshihiro.shimoda.uh@...esas.com>, <nsekhar@...com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>
Subject: Re: [PATCH v6 07/10] usb: dwc3: gadget: Fix suspend/resume during
 dual-role mode

On 11/04/16 15:23, Felipe Balbi wrote:
> 
> Hi,
> 
> Roger Quadros <rogerq@...com> writes:
>> Gadget controller might not be always active during suspend/
>> resume when we are operating in dual-role/otg mode.
>> Check if we're active and only if we are then perform
>> necessary actions during suspend/resume.
> 
> I don't get this. If we're operating in OTG, we should have a gadget
> driver loaded, no ?
> 
At boot gadget driver is not automatically loaded. We're still in OTG mode
but OTG state machine hasn't started.
System suspend/resume can still happen.

User might also load/unload the gadget driver prior to system suspend.

cheers,
-roger