linux-kernel - Re: [PATCH 4.19 114/149] UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments")

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Message-ID: <1573126365.3024.4.camel@suse.com>
Date:   Thu, 07 Nov 2019 12:32:45 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Alan Stern <stern@...land.harvard.edu>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 4.19 114/149] UAS: Revert commit 3ae62a42090f ("UAS: fix
 alignment of scatter/gather segments")

Am Dienstag, den 05.11.2019, 17:38 +0100 schrieb Greg Kroah-Hartman:
> > > Given this information, perhaps you will decide that the revert is 
> > > worthwhile.
> > 
> > Damned if I do, damned if I do not.
> > Check for usbip and special case it?
> 
> We should be able to do that in the host controller driver for usbip,
> right?  What is the symptom if you use a UAS device with usbip and this
> commit?

Yes, that patch should then also be applied. Then it will work.
Without it, commands will fail, as transfers will end prematurely.

	Regards
		Oliver