| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <200801021116.29067.david-b@pacbell.net> Date: Wed, 2 Jan 2008 11:16:28 -0800 From: David Brownell <david-b@...bell.net> To: linux-usb-devel@...ts.sourceforge.net Cc: "Mike Frysinger" <vapier.adi@...il.com>, gregkh@...e.de, Robin Getz <rgetz@...ckfin.uclinux.org>, linux-kernel@...r.kernel.org Subject: Re: [linux-usb-devel] [PATCH] : Allow embedded developers USB options normally reserved for OTG On Wednesday 02 January 2008, Mike Frysinger wrote: > > > > > > Allow embedded developers to turn support for USB Hubs off even if they have a > > > full root hub. This saves the overhead (RAM and Flash size). > > > > ISTR that it won't save very much code though ... the Linux USB > > stack structures all its enumeration logic around hubs. > > perhaps the code size is arguable as to whether it really matters. > the reason we want it is that we have a USB host controller that will > not work with USB hubs, so we want to make sure the system does not > attempt such things. (yes, such a USB host controller is retarded, > but the decision was out of our hands.) Well, it won't work with *external* hubs. Root hubs are a different story. :) I think that's one of a class of decisions sometimes made by folk who need to conserve silicon real estate. Supporting external hubs has always been optional for OTG systems. - Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists