Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <cbb850f7-86db-3ddd-cece-c4e0d413c298@suse.com>
Date:   Tue, 11 Apr 2023 11:33:51 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.9.0
Subject: Re: [PATCH] usb: core: hub: Disable autosuspend for VIA VL813 USB3.0
 hub
Content-Language: en-US
To:     Jimmy Hu <hhhuuu@google.com>, stern@rowland.harvard.edu,
        gregkh@linuxfoundation.org
Cc:     badhri@google.com, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, stable@vger.kernel.org
References: <20230411083145.2214105-1-hhhuuu@google.com>
From:   Oliver Neukum <oneukum@suse.com>
In-Reply-To: <20230411083145.2214105-1-hhhuuu@google.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?bmtRcFI5TG5TZHlsODJYRGRwb0lFZkJPKzdrcWhoYmsyR0lpeDVtcjlJa2ty?=
 =?utf-8?B?elNtaXczMjQwK3B2VkYyNmhiNXAzaVdkYXB5citQcGJmaytrZWNLYk9OcWFJ?=
 =?utf-8?B?ZTFOV3lCN0txenZOOVF0eGdWMmJlRU5lNTBrNUd1K1cxVHpEQk9qYlNRZ0FX?=
 =?utf-8?B?Qmc5cUgxcUcyaHB3UjJOeUFkQTdwMzBidjFLWjlQVHhNTHZSdTEycXJEc1NW?=
 =?utf-8?B?QURJYzFEVENTRVZIWUxsd3dRdE53aTloajFtZHIyTFMzamFtNGRHWnpwWHQr?=
 =?utf-8?B?Wi9mcEVVYzNZNFBQSnNKVldyUWxObWZVY1dsNjcvZHVHTnA3ckxEUVArcXRy?=
 =?utf-8?B?eERVYVZHeXNRU2x3bVdXanNEZlRKVHZlWjNmdk4rb0Mra09oZ3U1NzB2Z2Zy?=
 =?utf-8?B?RlN4UmVWbUVHZUtRUXNOd3ZCdUkzY3VmV3dkdklQSnpubkgxeWpsblpOZEZH?=
 =?utf-8?B?L1RuZG16aUkrMUE0TTBMaGJGd3p6L3NpeEg2WE5ZLzdzQzlyN1JMeFRydndC?=
 =?utf-8?B?cFVDMHE4ZWN4V0h4VG9wMXhIdVc4Z21ickVuUERkMGhOVDV0aVJFTDhKYlFt?=
 =?utf-8?B?d1dzdDgvQjVUbVJucWorVG5ZZVp3cUdqYzRxSGd3dkVrWkZQWWpRVUxHejBU?=
 =?utf-8?B?bHk1NGZiZjFWNDhQTGVlNlhya2R0Q1dDMjBMZk5PazAzSFU5Zm15ZGErVWNE?=
 =?utf-8?B?TmpGNHBqMUFFVDhBMEs1Y2lwZ2E2OXFQcTExN2s1WFpkc2RYZmV1emR5VFFF?=
 =?utf-8?B?b3RtV0FCUzhQQVhSL0Vpa1d0dUJHRi9OYk9KampTREJPeXhyWDBYR3MzQ0V6?=
 =?utf-8?B?cy8vSG5zZTRpZnVsbTRkNFpYblFlaWdqOFJEcm5Vang3M1dmeUhwdzgrNE4r?=
 =?utf-8?B?TEVzWEJya2dxckpnQU1TYmpzTG1LR2lJWjYxSGY3OTVjcWRZNjBJcGlJanBI?=
 =?utf-8?B?VWR1cFBCS2NyUlpFbUp4bUFvT0tic1VrUVNUZE5QNWRqdjJrSnRHWnJvN0tI?=
 =?utf-8?B?RDRtd1REcUJPRmtKdTBtRE4xYmQyQWs0VFU2ZDZoUGlXM1pxUUJjRUxZZXlU?=
 =?utf-8?B?NzRTQzloTmZ6WDU5QStXMkpnMmV5ZXJGanpBVXQ4RVkxanpuVXhzY0oyNjV5?=
 =?utf-8?B?ZnlvUS9KWmRldTRtVDg1Tks0RmRNOFI3MGJCdmxydEJMOG80Wnp2aXJQTnly?=
 =?utf-8?B?SWRyMHhJL3pYOGJxeGpLdlpuTzllN0ZBSHhMdXd3MTFyN3FZY1R4bFoxdkJa?=
 =?utf-8?B?WkExRjhVUWtMYnozZ2xKUTkvTEZNTXk0anlsREFtb1I1MEpNQjBqMVJ0QWFZ?=
 =?utf-8?B?Qmh1RFNYcUZoWEhkSUFuUW11WGNxODZ2ZFpramZ2UE1tOUVCbms1SHpUczZS?=
 =?utf-8?B?T3kwdWUzQW8yN2NOMHpMU2tqbUZXZVRCSER0L3MzL0xncXNSckVlQ2NnOFI2?=
 =?utf-8?B?dmt6OXlSSzNrbGdQblo5aEZIQ0dlQmwrNGFtVGRubDE3cmNtSTZjVXdndnZ2?=
 =?utf-8?B?MjhCckZzKzZxM25QMUU1RFVnenpoMm1XNGQ0ZThXTTNHaHAybGM3ZlArV2dV?=
 =?utf-8?B?TE00UjV3TXc1TEJxTTJpRFdKT1ZJczZMUGNKSTRhVjAvZnh0aXZSWCthMGZF?=
 =?utf-8?B?VUtYU0MvZ1dMZ2ZMMk96R1hWLzlXZXRXRlM3bTlwdVNLcGQyUFJObEdTeXBX?=
 =?utf-8?B?M1pnMHJ3SG16TnZKTXdDazhsWlF6NWFBY1Z5TnZHSVhoMSs2WGcyek5CQ012?=
 =?utf-8?B?RWxqQmwxbS9NeHFtcDF2TUhWZWt0bVd0VkVCMmNuREZJRjJ1OFJNajlHSkJC?=
 =?utf-8?B?KzJkWVJJdldmN2ovZjFpQUp6R3dEMmxscTIzdTBwVnBPcVpLT29xbWdFcU5a?=
 =?utf-8?B?Q092SjNKTzdYSVU0OFFsQ2grYkc0QlJEVWVyYkJrWnMyaks4TlUwSDBEV0Fj?=
 =?utf-8?B?WnlreW91L1V1OHRqd3BkL1hEMjVzSkZsVmpYSXBXR3NSdXBnVXVUdit6Tlpk?=
 =?utf-8?B?QTJha2lnS0RsbC90QzhJZ3B3SEpuemtyd3FicjZrZHM5R2hZVGdRUk9kaGVh?=
 =?utf-8?B?MlRlNlJrU0pldVdFZzJxcG5vcFdnd0NSTGliOFFOQ0RxZFZtakhwZWM4VHhC?=
 =?utf-8?B?SWtiS05GMkR2T244dUdodWM3VzdsSVYxcVV4VnBqQ0RTTldmYzB2YXVVczlj?=
 =?utf-8?Q?hv7qmZXdGY7QEg7GvUqkyzAGwic1tq9tAHLW/VHrY6cv?=
X-OriginatorOrg: suse.com
X-MS-Exchange-CrossTenant-Network-Message-Id: c9e7ba23-048c-4f7a-d140-08db3a6fde3f
X-MS-Exchange-CrossTenant-AuthSource: VI1PR04MB7104.eurprd04.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Apr 2023 09:33:55.2274
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: W32wTPiDXPTiaCw7e2PE0Zk2G4pUM35VHvnxxWWbL+OEUtuHObTqcJ/HJs3zGD+/UYOACHk4HzPiqev3Ms53Hw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBAPR04MB7238
X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,
        DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,
        RCVD_IN_MSPIKE_H2,RCVD_IN_VALIDITY_RPBL,SPF_HELO_PASS,SPF_PASS
        autolearn=unavailable autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


On 11.04.23 10:31, Jimmy Hu wrote:
> The VIA VL813 USB3.0 hub appears to have an issue with autosuspend and
> detecting USB3 devices. This can be reproduced by connecting a USB3
> device to the hub after the hub enters autosuspend mode.

Hi,

out of interest, could you test whether this also applies to disconnections?
That is, does the hub reliably wake up if you unplug a device?

	Regards
		Oliver