On Sun, Jul 29, 2007 at 02:17:31AM -0400, Dave Mielke wrote: > [quoted lines by Greg KH on 2007/07/28 at 23:04 -0700] > > >It's easier to go from a sysfs device to a usbfs device, but I don't > >understand the question really. You want to know how to do it on newer > >kernels but not older ones? The mapping is still the same, nothing has > >changed, you can still just look up the bus and device number from the > >usbfs name and then walk sysfs to get the device. That will work with > >all kernel versions, right? > > Yes, I suppose so, but we used to be able to go directly to it via > /sys/class/usb_device/usbdev<bus>.<dev>. Is there a reason that's gone > away (without special configuration)? Without it our code needs to become more > complex, which is always something I'd rather avoid.
There is a kernel configuration option to retain this if you really need it. Right now the information is already availble in sysfs in a different location (/sys/bus/usb/devices) so having this is redundant. And yes, you can use /sys/bus/usb/devices on older kernels as well. thanks, greg k-h ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
