linux-kernel - Re: [PATCH 2/2] usb: hub: Mark devices downstream a removable hub, as removable

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Message-ID: <978eb183-e45e-0465-d3f0-3ec363f01211@suse.com>
Date:   Wed, 6 Oct 2021 20:36:02 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     Alan Stern <stern@...land.harvard.edu>,
        Oliver Neukum <oneukum@...e.com>
CC:     Dmitry Torokhov <dtor@...gle.com>, Rajat Jain <rajatja@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Andrew Lunn <andrew@...n.ch>,
        Chris Chiu <chris.chiu@...onical.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        levinale@...gle.com, bleung@...gle.com, rajatxjain@...il.com,
        jsbarnes@...gle.com, pmalani@...gle.com
Subject: Re: [PATCH 2/2] usb: hub: Mark devices downstream a removable hub, as
 removable


On 06.10.21 18:10, Alan Stern wrote:
> On Wed, Oct 06, 2021 at 11:37:58AM +0200, Oliver Neukum wrote:
>>
>> In theory yes. If your HC is removable by that logic every device is.
>> That renders the information content of 'removable' to zero. Everything
>> is removable.
> So we should add a new attribute.  Call it "unpluggable", perhaps.  It 
> will say whether the device's immediate upstream link is 
> hot-unpluggable.  Then the device is removable if its parent is 
> removable or if it is unpluggable.

Hi,

yes that would solve the issue. We are basically trying two press two
attributes
into one and that does not work.

    Regards
'        Oliver