On Sun, 26 Aug 2012, David Ranch wrote: > Hello Alan, > > > The best that can be said is that it sort of works most of the time. > > But there are plenty of cases where it doesn't work, and you are > > facing one of them. > Geee... I feel honored! (grrrr) That's usually my luck with Linux but > I've always been a glutton for punishment, I mean, up for the challenge > so I'll keep at it. ;-) Of course, the nice thing about Linux is that you have a decent chance of actually improving the situation. :-) > > By the way, now that you've got CONFIG_USB_DEBUG enabled, there's > > something I'd like to see. I'm assuming you've got a debugfs > > filesystem mounted on /sys/kernel/debug. Go into > > /sys/kernel/debug/usb/ehci/0000:00:1d.0/ (that's the directory > > corresponding to the controller your device is plugged into, bus 2) > > and post a copy of the "periodic" file in that directory > > Something is a miss here as that path ( /sys/kernel/debug/usb/ehci ) > doesn't exist and I'm also getting new hourly errors complaining about > missing proc entries like: > > /sys/devices/system/cpu/sched_mc_power_savings > > I imagine it might be a specific issue with this modern kernel running > on "old.. centos6 kernel) so I've posted my kernel config here: > > > http://www.trinityos.com/SCRATCH/3.5.2-1.ax25.el6.x86_64 > . . . > -rw-r--r-- 1 dranch dranch 130080 Aug 26 12:24 kernel-ml-3.5.2-config.txt > -rw-r--r-- 1 dranch dranch 353212 Aug 26 12:24 usbdebug-sys-dir.txt > > If you can help me figure out why the EHCI debug interface isn't showing > up (maybe the /proc line is a hint), I'll recompile and get the results > you asked for. I don't know about those error messages. As for the missing USB debug directories, what you show is typical for a system where CONFIG_USB_DEBUG is not enabled. Are you sure that you are really running the new kernel and modules? Getting it to work right may require creating a new initramfs image; some systems load the USB drivers from there. Alan Stern -- 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
