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([2001:a61:13b5:e001:5d05:908:ac82:a3a1]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a93103e72dsm25003415e9.2.2026.10.28.01.48.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 28 Oct 2026 01:48:15 -0700 (PDT) Message-ID: <5230664a-9666-4196-a798-260da5aa8e8e@suse.com> Date: Wed, 28 Oct 2026 09:48:15 +0100 X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] usb: uas: wait for pending commands before unbinding To: Jiayi Li Cc: Alan Stern , Michal Pecio , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-scsi@vger.kernel.org, usb-storage@lists.one-eyed-alien.net, linux-kernel@vger.kernel.org References: <8469d5fa-2f4e-4565-8d84-43d6b71b4a9c@suse.com> <20261028020958.1141513-1-lijiayi@kylinos.cn> Content-Language: en-US From: Oliver Neukum In-Reply-To: <20261028020958.1141513-1-lijiayi@kylinos.cn> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 28.10.26 03:09, Jiayi Li wrote: Hi, > USB core has already terminated the interface URBs, but a running > synchronous scan may still be waiting for SCSI command completion. > Waiting for scan_work at the beginning of uas_disconnect() would > therefore delay the command cleanup below. Why? What is it waiting for? And why do you think we can skip that wait safely? Regards Oliver