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Message-ID: <1554708756.8951.7.camel@suse.com>
Subject: Re: Bug: cdc_acm blocking write after many small writes
From:   Oliver Neukum <oneukum@suse.com>
To:     "Linus K." <linus.kaschulla@gmail.com>, linux-usb@vger.kernel.org
Date:   Mon, 08 Apr 2019 09:32:36 +0200
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References: <10cfe58c-2d91-30d3-8672-ebe261363bf1@gmail.com>
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On Fr, 2019-04-05 at 17:09 +0200,  Linus K.  wrote:
> Hi,
> I recently submitted this bug to https://bugzilla.kernel.org/ and was 
> redirected here.

Hi,

does your kernel have

commit df3aa13c7bbb307e172c37f193f9a7aa058d4739
Author: Oliver Neukum <oneukum@suse.com>
Date:   Wed Sep 5 17:56:46 2018 +0200


    Revert "cdc-acm: implement put_char() and flush_chars()"

and

commit 93e1c8a638308980309e009cc40b5a57ef87caf1
Author: Romain Izard <romain.izard.pro@gmail.com>
Date:   Fri Mar 22 16:53:02 2019 +0100

    usb: cdc-acm: fix race during wakeup blocking TX traffic

	Regards
		Oliver