linux-kernel - Re: [PATCH] usb: storage: Add ums-cros-aoa driver

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Message-ID: <20190903091953.GA12325@kroah.com>
Date:   Tue, 3 Sep 2019 11:19:53 +0200
From:   Greg KH <greg@...ah.com>
To:     Oliver Neukum <oneukum@...e.com>
Cc:     Alan Stern <stern@...land.harvard.edu>,
        Julius Werner <jwerner@...omium.org>,
        USB Storage list <usb-storage@...ts.one-eyed-alien.net>,
        Dan Williams <dcbw@...hat.com>,
        Kernel development list <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] usb: storage: Add ums-cros-aoa driver

On Tue, Sep 03, 2019 at 10:46:14AM +0200, Oliver Neukum wrote:
> Am Montag, den 02.09.2019, 18:47 +0200 schrieb Greg KH:
> > 
> > This should work just fine today.  Add a new device id to the "new_id"
> > file and then tell the driver to bind.  That's pretty much the same as a
> > "force_bind", right?
> 
> That looks like a race condition by design to me.

How?

Anyway, this should all "just work" somehow, there's an old lwn.net
article I wrote about this over a decade ago when it was added.  A
number of subsystems use this all the time (vfio?) and I haven't heard
any issues with it in a long time.

thanks,

greg k-h