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Date: Fri, 15 Jul 2022 23:28:33 +0200 From: Frans Klaver <fransklaver@...il.com> To: Reinhard Speyerer <rspmn@...or.de> CC: Johan Hovold <johan@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Frans Klaver <frans.klaver@...link.com>, stable@...r.kernel.org Subject: Re: [PATCH v2] usb: serial: qcserial: add EM9191 support On July 15, 2022 11:00:45 PM GMT+02:00, Reinhard Speyerer <rspmn@...or.de> wrote: >the qcserial driver used in the usb-devices output above does not seem >to be built from the mainline qcserial.c with your patch applied as USB >interface 4 is ignored by the QCSERIAL_SWI layout. Right, I will need to look into that then. I won't be able to access the devices for a couple of weeks, though. It might also just have been me no paying attention while testing. I'll get back to this. >To avoid potential side effects in case Sierra Wireless adds a vendor class >USB interface 2 not intended to be used with qcserial.c it might be best >to use a new QCSERIAL_SWI2 layout similar to what has been done in >their MBPL drivers mentioned here >https://forum.sierrawireless.com/t/rc7620-and-linux-driver/24308/ . I'll have a look at this too. Thanks, Frans
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