Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751147AbWCAVcQ (ORCPT ); Wed, 1 Mar 2006 16:32:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751932AbWCAVcQ (ORCPT ); Wed, 1 Mar 2006 16:32:16 -0500 Received: from dsl093-040-174.pdx1.dsl.speakeasy.net ([66.93.40.174]:13465 "EHLO aria.kroah.org") by vger.kernel.org with ESMTP id S1751147AbWCAVcQ (ORCPT ); Wed, 1 Mar 2006 16:32:16 -0500 Date: Wed, 1 Mar 2006 13:32:23 -0800 From: Greg KH To: Ren?? Rebe Cc: linux-kernel@vger.kernel.org Subject: Re: MAX_USBFS_BUFFER_SIZE Message-ID: <20060301213223.GA17270@kroah.com> References: <200603012116.25869.rene@exactcode.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200603012116.25869.rene@exactcode.de> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 721 Lines: 25 On Wed, Mar 01, 2006 at 09:16:25PM +0100, Ren?? Rebe wrote: > Hi, > > I wonder if: > > drivers/usb/core/devio.c:86 > #define MAX_USBFS_BUFFER_SIZE 16384 > > is some random, or outdated limit or if there really is some code path that could > not handle bigger URBs. > > For performance reasons I would like to use bigger packages for an image > aquisition device. Why not just send down 2 urbs with that size then, that would keep the pipe quite full. thanks, greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/