linux-kernel - Re: [PATCH] USB:UAS:return ENODEV when submit urbs fail with device not attached.

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Message-ID: <594c4e2f-74c4-42dd-9b7c-c3468a55c7ee@zhaoxin.com>
Date: Wed, 28 Feb 2024 05:35:50 +0800
From: "WeitaoWang-oc@...oxin.com" <WeitaoWang-oc@...oxin.com>
To: Oliver Neukum <oneukum@...e.com>, <stern@...land.harvard.edu>,
	<gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
	<usb-storage@...ts.one-eyed-alien.net>
CC: <WeitaoWang@...oxin.com>
Subject: Re: [PATCH] USB:UAS:return ENODEV when submit urbs fail with device
 not attached.

On 2024/2/27 17:05, Oliver Neukum wrote:
> 

> On 22.02.24 21:06, WeitaoWang-oc@...oxin.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.
> 
Okay, Thanks for your suggestion. And I'll improve this patch
description in the next version.

Thanks & Best regards,
Weitao