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@cyber-anlage.de Fixes: 8a7bf7510d1f ("USB: serial: pl2303: amend and tighten type detection") Cc: stable@vger.kernel.org # 5.13 Signed-off-by: Johan Hovold johan@kernel.org

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drivers/usb/serial/pl2303.c | 41 ++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 16 deletions(-)

Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org