From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: [PATCH net,stable] cdc_ncm: workaround for EM7455 "silent" data interface Date: Mon, 04 Jul 2016 15:00:01 +0200 Message-ID: <1467637201.9978.11.camel@suse.com> References: <1467577490-27810-1-git-send-email-bjorn@mork.no> <1467619605.9978.4.camel@suse.com> <87h9c5638l.fsf@nemi.mork.no> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, metze-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org To: =?ISO-8859-1?Q?Bj=F8rn?= Mork Return-path: In-Reply-To: <87h9c5638l.fsf-lbf33ChDnrE/G1V5fR+Y7Q@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On Mon, 2016-07-04 at 13:40 +0200, Bj=C3=B8rn Mork wrote: > Oliver Neukum writes: > > On Sun, 2016-07-03 at 22:24 +0200, Bj=C3=B8rn Mork wrote: > >> Several Lenovo users have reported problems with their Sierra > >> Wireless EM7455 modem. The driver has loaded successfully and > >> the MBIM management channel has appeared to work, including > >> establishing a connection to the mobile network. But no frames > >> have been received over the data interface. > > > > If this is needed in open() it must also be needed in reset_resume(= ) >=20 > reset_resume needs fixing in general. This is completely unrelated to > this bug. In fact, as we don't do any NCM control messages there in t= he I see. In general this would be a problem. > current resume, I'm not sure this firmware bug is triggered by it. B= ut > it's untestable, because: OK, something needs to be done, but this patch is not the place to do it. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html