linux-kernel - Re: [PATCH] USB: serial: pl2303: fix HX type detection

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Message-ID: <YQPwwygDuJklttlP@kroah.com>
Date:   Fri, 30 Jul 2021 14:29:55 +0200
From:   Greg KH <greg@...ah.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     Charles Yeh <charlesyeh522@...il.com>,
        Yeh.Charles [葉榮鑫] 
        <charles-yeh@...lific.com.tw>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chris <chris@...er-anlage.de>,
        stable@...r.kernel.org
Subject: Re: [PATCH] USB: serial: pl2303: fix HX type detection

On Fri, Jul 30, 2021 at 02:21:56PM +0200, Johan Hovold wrote:
> The device release number for HX-type devices is configurable in
> EEPROM/OTPROM and cannot be used reliably for type detection.
> 
> Assume all (non-H) devices with bcdUSB 1.1 and unknown bcdDevice to be
> of HX type while adding a bcdDevice check for HXD and TB (1.1 and 2.0,
> respectively).
> 
> Reported-by: Chris <chris@...er-anlage.de>
> Fixes: 8a7bf7510d1f ("USB: serial: pl2303: amend and tighten type detection")
> Cc: stable@...r.kernel.org	# 5.13
> Signed-off-by: Johan Hovold <johan@...nel.org>
> ---
>  drivers/usb/serial/pl2303.c | 41 ++++++++++++++++++++++---------------
>  1 file changed, 25 insertions(+), 16 deletions(-)
> 

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>