From: David Miller <davem@davemloft.net>
To: bjorn@mork.no
Cc: netdev@vger.kernel.org, linux-usb@vger.kernel.org,
fred.veldini@gmail.com, dwen@sierrawireless.com
Subject: Re: [PATCH net,stable] qmi_wwan: set DTR for modems in forced USB2 mode
Date: Mon, 17 Sep 2018 19:23:47 -0700 (PDT) [thread overview]
Message-ID: <20180917.192347.21781360193200788.davem@davemloft.net> (raw)
In-Reply-To: <20180917200024.13571-1-bjorn@mork.no>
From: Bjørn Mork <bjorn@mork.no>
Date: Mon, 17 Sep 2018 22:00:24 +0200
> Recent firmware revisions have added the ability to force
> these modems to USB2 mode, hiding their SuperSpeed
> capabilities from the host. The driver has been using the
> SuperSpeed capability, as shown by the bcdUSB field of the
> device descriptor, to detect the need to enable the DTR
> quirk. This method fails when the modems are forced to
> USB2 mode by the modem firmware.
>
> Fix by unconditionally enabling the DTR quirk for the
> affected device IDs.
>
> Reported-by: Fred Veldini <fred.veldini@gmail.com>
> Reported-by: Deshu Wen <dwen@sierrawireless.com>
> Signed-off-by: Bjørn Mork <bjorn@mork.no>
Applied and queued up for -stable.
prev parent reply other threads:[~2018-09-18 7:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 20:00 [PATCH net,stable] qmi_wwan: set DTR for modems in forced USB2 mode Bjørn Mork
2018-09-17 20:21 ` Deshu Wen
2018-09-18 2:23 ` David Miller [this message]
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