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([2001:a61:1366:6801:d8:8490:cf1a:3274]) by smtp.gmail.com with ESMTPSA id c12-20020a17090603cc00b00a433f470cf1sm552971eja.138.2024.02.27.01.05.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Feb 2024 01:05:07 -0800 (PST) Message-ID: <8f4fe820-2385-40e7-a3c6-51102e57acad@suse.com> Date: Tue, 27 Feb 2024 10:05:05 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] USB:UAS:return ENODEV when submit urbs fail with device not attached. To: "WeitaoWang-oc@zhaoxin.com" , Oliver Neukum , stern@rowland.harvard.edu, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, usb-storage@lists.one-eyed-alien.net Cc: WeitaoWang@zhaoxin.com References: <20240222165441.6148-1-WeitaoWang-oc@zhaoxin.com> <3ff16f34-07a9-4b7e-b51d-b7220f08d88d@suse.com> <41daf1a9-590a-e220-84a3-648eb895272b@zhaoxin.com> Content-Language: en-US From: Oliver Neukum In-Reply-To: <41daf1a9-590a-e220-84a3-648eb895272b@zhaoxin.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 22.02.24 21:06, WeitaoWang-oc@zhaoxin.com wrote: > Maybe, my description was not accurate enough, here not add new return > value to scsi layer,it just add a case to tell device is gone in the uas > driver internal and the ENODEV error code not return to scsi layer. > Here just notify SCSI layer of device loss through flag DID_NO_CONNECT. > This is also hope to fix this issue in the uas driver internal. Hi, sorry for the delay. OK, I see what you are aiming at. Could you redo the patch with a better description, like: We need to translate -ENODEV to DID_NOT_CONNECT for the SCSI layer. Regards Oliver