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[209.85.160.169]) by smtp.gmail.com with ESMTPSA id z5sm1599732qta.7.2020.02.21.06.06.18 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Feb 2020 06:06:19 -0800 (PST) From: Otavio Salvador X-Google-Original-From: Otavio Salvador Received: by mail-qt1-f169.google.com with SMTP id p34so1314084qtb.6 for ; Fri, 21 Feb 2020 06:06:18 -0800 (PST) X-Received: by 2002:ac8:607:: with SMTP id d7mr31861329qth.271.1582293978531; Fri, 21 Feb 2020 06:06:18 -0800 (PST) MIME-Version: 1.0 References: <41a7bfe7-54b1-84eb-091f-469d971ab968@synopsys.com> <380d765b-8867-a899-b67a-c016c09fa27b@synopsys.com> <1d2ee918-57e4-53b2-6953-0107d7720c59@synopsys.com> In-Reply-To: <1d2ee918-57e4-53b2-6953-0107d7720c59@synopsys.com> Date: Fri, 21 Feb 2020 11:06:06 -0300 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: USB DWC2 stops responding when insert/remove cable multiple times To: Minas Harutyunyan Cc: Greg Kroah-Hartman , "linux-usb@vger.kernel.org" , Felipe Balbi , Heiko Stuebner , "linux-rockchip@lists.infradead.org" , Johan Hovold Content-Type: text/plain; charset="UTF-8" Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hello Minas, On Fri, Feb 21, 2020 at 3:52 AM Minas Harutyunyan wrote: > On 2/20/2020 5:16 PM, Otavio Salvador wrote: > > Hello Minas, > > > > Thanks for all your help on this, ... > > > > On Thu, Feb 20, 2020 at 3:59 AM Minas Harutyunyan > > wrote: > >> > >> On 2/19/2020 7:10 PM, Otavio Salvador wrote: > > ... > >>> What sequence do you want us to do? > >> > Please provide dwc2 debug log when stop working with g_serial exception > dump inside. > Also provide dwc2 log when it's work without issue. Attached. > >> Yes. Can you provide also USB trace > > > I can, however, it is not clear to me what you want us to do. > > > > Should we use, on host side, usbmon? or do you want something different? > > > Do you have any USB tracer equipment to record trace between host and > device? I don't. Can we instrument the kernel somehow to gather the info we need? -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9 9981-7854 Mobile: +1 (347) 903-9750