On Wed, Apr 22, 2009 at 18:50, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > I don't know why the "usb_host" directory is in the middle; it > contains nothing but the usb_hostN subdirectory. It's the "glue directory" which all class devices have, that have a bus device as the parent. They prevent name clashes of device names and attribute names. Like people complained, that they could not rename their network interface to "irq", because the pci dev has this as an attribute. :) > Finally, usb_hostN itself doesn't contain much of interest. For EHCI > controllers, the "companion" attribute is created there. Otherwise I > don't believe it contains anything useful. (It used to contain > debugging files, but they have been moved to debugfs.) Yeah, that's what I though, I guess, they should just be deleted. Just like the upcoming patches for scsi which remove all the useless devices, which do not do anything but create useless empty directories and a bunch of files to point to the real devices. Thanks, Kay -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
