From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751086AbdKTKBZ (ORCPT ); Mon, 20 Nov 2017 05:01:25 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:33161 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750934AbdKTKBX (ORCPT ); Mon, 20 Nov 2017 05:01:23 -0500 X-Google-Smtp-Source: AGs4zMYk3gnTIYQAutaqGPgr92pCYlWNWs/vhSDe34atnsnNa312ThnfRnFcrp7yFNu2HT8FS4ojqQ== Message-ID: <1511172075.3901.4.camel@canonical.com> Subject: Re: [PATCH] net: qmi_wwan: add Dell DW5818, DW5819 From: Shrirang Bagul To: =?ISO-8859-1?Q?Bj=F8rn?= Mork Cc: johan@kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 20 Nov 2017 18:01:15 +0800 In-Reply-To: <87lgj1thg9.fsf@miraculix.mork.no> References: <20171120092759.17981-1-shrirang.bagul@canonical.com> <87lgj1thg9.fsf@miraculix.mork.no> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-1KnTy6BNXS066iVRD0/Q" X-Mailer: Evolution 3.26.1-1 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-1KnTy6BNXS066iVRD0/Q Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2017-11-20 at 10:41 +0100, Bj=C3=B8rn Mork wrote: > Shrirang Bagul writes: >=20 > > Dell Wireless 5819/5818 devices are re-branded Sierra Wireless MC74 > > series modems which will by default boot with vid 0x413c and pid's > > 0x81cf, 0x81d0, 0x81d1,0x81d2. Along with qcserial, these modems suppor= t > > qmi_wwan on the usb interface #12. >=20 > NAK, >=20 > Interace #12 is MBIM, as shown by the device descriptors. Please provide > those descriptors and you will see that this interface is clearly a CDC > MBIM class interface. >=20 > Yes, I know these modems probe the control protocol so that you can make > QMI work on an MBIM control interface by sending it a QMI request as the > first messsage. This is still wrong, abusing a quirky firmware > feature. >=20 > You need to reconfigure the modem for QMI using the Sierra specific AT > command or QMI request (tunneled in MBIM!) to properly switch it to QMI > mode, which will appear as a vendor specific interface number 8 (and 10 > if you enable both QMI functions). Understood. Needs more work, will resend with fixes. - Shrirang >=20 >=20 >=20 >=20 >=20 > Bj=C3=B8rn --=-1KnTy6BNXS066iVRD0/Q Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIcBAABCAAGBQJaEqfrAAoJELlj3b/+u+hkFmAP/2/SVOUtVpQ7VfPXyhjQY5re II7LvllYTpWrljlHJVonVZLEknky8RfKRWg/P+fkHGM/6NMYUhEAAw8u8Xvx0CFM RWG/GmdKZnFq4TA1dQ/Zw5HM17oJucGLotB8f9Foz3fLzK8Sg0pwr9G7wdoeJOpC 7+bXX001cV/UQG4lr46tiS+yvblfczN8SNtQtxZllUVioQHsyXzoZDIqpOoeSW6P fXdLX6ErodJU8E+p7zfL9Ve2Fsc/S1pkebro/NvlpokqRggDCc1YtXAjjgh+S5uD jaxEHwWsaV96jUUsYcr55ZhoNDISnkwWBqwJhVsTEpxhztYBUNynHVNNZx4M5CcP L/x+l7SccmMs5eRz2FWTaXUEI+K2MAJRe6v8Zltf8Jjo4Pim3TlG4s/prEMr/TfL ZyQlzEJ0vm7Va4+a02P2aYJDURfL+HNQUcwf+Hk/773fZjBPJY/gKr4OwXVfJ+VB 9J2KGdwr5sV2EQfvXOISaU4fjB0AZnFi+xs0up/PPzQEJ+aZkFLo28FH51kd9XQj vdz3rnmSgUk3JXCZ964Ui2V1dW1bycEQ1s39WwR0PEW42unEAaoqUq+Dmsuvo2ZH 5JIoCMsLdndKzIVxdcD9DnQZNRcebJliQSj/O5DN7ECksC7/ToIcIXWwU5gnsrX+ uJnbQ8wBXpvI678KznEu =Ywkc -----END PGP SIGNATURE----- --=-1KnTy6BNXS066iVRD0/Q--