From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: [PATCH] USBNET: fix handling padding packet Date: Thu, 19 Sep 2013 08:57:23 +0200 Message-ID: <1379573843.8608.7.camel@linux-fkkt.site> References: <1379409002-7698-1-git-send-email-ming.lei@canonical.com> <878uyu6xjm.fsf@nemi.mork.no> <87zjra5dpx.fsf@nemi.mork.no> <1379523984.2430.3.camel@linux-fkkt.site> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Ming Lei , "David S. Miller" , Greg Kroah-Hartman , Network Development , linux-usb To: =?ISO-8859-1?Q?Bj=F8rn?= Mork Return-path: Received: from cantor2.suse.de ([195.135.220.15]:42863 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752676Ab3ISG51 (ORCPT ); Thu, 19 Sep 2013 02:57:27 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 2013-09-18 at 20:56 +0200, Bj=C3=B8rn Mork wrote: > Oliver Neukum wrote: > >No, USB 3.0 uses no companion controllers, so you can have devices > >of any speed connected to it. > > >=20 > Ah, right. I don't own such modern hardware, but I should have known = this anyway.=20 >=20 > This still doesn't change the fact that the driver is brand new for b= rand new devices. I believe we should assume such devices will support = ZLPs unless we have documentation stating anything else. =46or such devices we might assume it. But how does that matter for generic code? As any kind of device may be connected to XHCI, the sg code is relevant for every driver. And I certainly don't want trouble for older devices' drivers converted to sg. Regards Oliver