linux-kernel - Re: [PATCH] usb: storage: add shutdown function for usb storage driver

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Message-ID: <bdac114d-2366-407a-bfe1-fca2bb035429@suse.com>
Date:   Wed, 25 Oct 2023 11:07:07 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     Alan Stern <stern@...land.harvard.edu>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:     "Li, Meng" <Meng.Li@...driver.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "usb-storage@...ts.one-eyed-alien.net" 
        <usb-storage@...ts.one-eyed-alien.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: storage: add shutdown function for usb storage
 driver

On 24.10.23 21:23, Alan Stern wrote:
  
> Since USB class-device drivers don't have ->shutdown callbacks (there is
> no shutdown() method in struct usb_driver), they don't know what's going
> on while a shutdown or reboot is in progress.  All they see is a bunch
> of errors.

Does this solve the issue? You'd have to flush the cache on the SCSI
device further down in the tree, if you want this done properly.

	Regards
		Oliver